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This fixes a security issue that can be exploited to inject arbritrary debs
or other files into a signed repository as followed:
(1) Server sends a redirect to somewhere%0a<headers for the apt method> (where %0a is
\n encoded)
(2) apt method decodes the redirect (because the method encodes the URLs before
sending them out), writting something like
somewhere\n
<headers>
into its output
(3) apt then uses the headers injected for validation purposes.
Regression-Of: c34ea12ad509cb34c954ed574a301c3cbede55ec
LP: #1812353
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Some post-invoke scripts install packages, which fails because
the environment variable is not set. This sets the variable for
all three kinds of scripts {pre,post-}invoke and pre-install-pkgs,
but we will only allow post-invoke at a later time.
Gbp-Dch: full
(cherry picked from commit 6675601c81de85b40dc89772c1d6d17f1811c5ba)
LP: #1796808
(cherry picked from commit 0ce6bc5ec70ff84eb2829f91f286a93687e77a46)
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The default buffer size for pkgTagFile is 32kb which should be big
enough for everything… expect for enormous lists of provides,
resulting in:
$ apt show librust-winapi-dev
E: Unable to parse package file /var/lib/apt/lists/ftp.br.debian.org_debian_dists_unstable_main_binary-amd64_Packages (2)
E: Internal Error, Unable to parse a package record
The "apt-cache show" codepath uses instead a max size for all files,
which seems a bit excessive, but works – using the max size for the file
in question seems most appropriate.
The patch is written for the 1.6.y series as a rewrite of the related
code in the 1.7.y series (commit bf53f39c9a0221b670ffff74053ed36fc502d5a0)
removed this problem before it was reported.
Closes: #905527
LP: #1787120
(cherry picked from commit 409ceec9ed30cbebd8ece1ef7ce667ab5a32f9df)
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When APT was trying multiple addresses, any later error
somewhere else would be reported with ConnectionRefused
or ConnectionTimedOut as the FailReason because that
was set by early connect attempts. This causes APT to
handle the failures differently, leading to some weirdly
breaking test cases (like the changed one).
Add debugging to the previously failing test case so
we can find out when something goes wrong there again.
(cherry picked from commit d3a70c3e5ae68a0e5a3d4667dd1d0fc0887e6263)
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If the last alternative(s) of an Or group is ignored, because it does
not match an architecture list, we would end up keeping the or flag,
effectively making the next AND an OR.
For example, when parsing (on amd64):
debhelper (>= 9), libnacl-dev [amd64] | libnacl-dev [i386]
=> debhelper (>= 9), libnacl-dev |
Which can cause python-apt to crash.
Even worse:
debhelper (>= 9), libnacl-dev [amd64] | libnacl-dev [i386], foobar
=> debhelper (>= 9), libnacl-dev [amd64] | foobar
By setting the previous alternatives Or flag to the current Or flag
if the current alternative is ignored, we solve the issue.
LP: #1694697
(cherry picked from commit 7ddf958e370d13f93edc6923bee289b2f6444b41)
(cherry picked from commit 423ba4a958b9da02926e586bf59995817cafc32a)
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In the intended usecase where this serves as a hack there is no problem
with double/single quotes being present as we write it to a log file
only, but nowadays our calling of apt-key produces a temporary config
file containing this "setting" as well and suddently quoting is
important as the config file syntax is allergic to it.
So the fix is to ignore all quoting whatsoever in the input and just
quote (with singles) the option values with spaces. That gives us 99% of
the time the correct result and the 1% where the quote is an integral
element of the option … doesn't exist – or has bigger problems than a
log file not containing the quote. Same goes for newlines in values.
LP: #1672710
(cherry picked from commit 2ce15bdeac6ee93faefd4b42b57f035bef80c567)
(cherry picked from commit c75620dcfa749f8030e0180df44eec746402885d)
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In the case of build-dep and other commands where a file can be
passed we must make sure not to normalize the path name as that
can have odd side effects, or well, cause the operation to do
nothing.
Test for build-dep-file is adjusted to perform the vcard check
once as "vcard" and once as "VCard", thus testing that this
solves the reported bug.
We inline the std::transform() and optimize it a bit to not
write anything in the common case (package names are defined
to be lowercase, the whole transformation is just for names
that should not exist...) to counter the performance hit of
the added find() call (it's about 0.15% more instructions
than with the existing transform, but we save about 0.67%
in writes...).
Closes: #854794
(cherry picked from commit 85ee4036c68d8ecd2c973d413a17aca81380900b)
(cherry picked from commit 83e6e1a8fc942668f9a01906cb8349fb70a45b3d)
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If apt renames a file to .FAILED it leaves its namespace and is never
touched again – expect since 1.1~exp4 in which "apt clean" will remove
those files. The usefulness of these files rapidly degrades if you don't
keep the update log itself (together with debug output in the best case)
through and on 99% of all system they will be kept around forever just
to collect dust over time and eat up space.
With this commit an update call will remove all FAILED files of previous
runs, so that the FAILED files you have on disk are always only the ones
related to the last apt run stopping apt from hoarding files.
Closes: 846476
(cherry picked from commit 7ca83492e802967f183babf06ab541b1b51f1703)
(cherry picked from commit c8540403ed35fa36e1610fd90aeae8f66c126fdb)
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Unlikely that anyone is actually running into this, but if we asked to
not generate a cache and avoid it in the first step we shouldn't create
one implicitly anyway by displaying the statistics.
(cherry picked from commit 33f982b90a4f77be18cb82daf8c79e9c5513761c)
(cherry picked from commit 1d017d04c5fdbf71a35e8f154f01bc94305ad798)
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That was the case already for tar-only and diff-only, but in a more
confusing way and without a message while dsc "worked" before resulting
in a dpkg-source error shortly after as tar/diff files aren't available…
(cherry picked from commit 58ebb3017baf46e33a9bb2c1779d6daede27d108)
(cherry picked from commit ab951bc3184d62d9bf9a94187468329e53ac0d0a)
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We can't cleanup the environment like e.g. sudo would do as you usually
want the environment to "leak" into these helpers, but some variables
like HOME should really not have still the value of the root user – it
could confuse the helpers (USER) and HOME isn't accessible anyhow.
Closes: 842877
(cherry picked from commit 34b491e735ad47c4805e63f3b83a659b8d10262b)
(cherry picked from commit cc5919076ba1c2dab773a6c06cb3dd5497f0c656)
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A user relying on the deprecated behaviour of apt-get to accept a source
with an unknown pubkey to install a package containing the key expects
that the following 'apt-get update' causes the source to be considered
as trusted, but in case the source hadn't changed in the meantime this
wasn't happening: The source kept being untrusted until the Release file
was changed.
This only effects sources not using InRelease and only apt-get, the apt
binary downright refuses this course of actions, but it is a common way
of adding external sources.
Closes: 838779
(cherry picked from commit 84eec207be35b8c117c430296d4c212b079c00c1)
LP: #1657440
(cherry picked from commit 5605c9880f36c764baaca59328777d34645a32fa)
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In effect this is an extension of the 6 years old commit
a8dfff90aa740889eb99d00fde5d70908d9fd88a which uses the autoremover to
remove packages again from the solution which are no longer needed to be
there. Commonly these are dependencies of packages we end up not
installed due to problem resolver decisions. Slightly less common is
the situation we deal with here: a package which we wanted to upgrade
sporting a new dependency, but ended up holding back.
The problem is that all versions of an installed reverse dependencies can
bring back a "garbage" package – we need to do this as there is
nothing inherently wrong in having garbage packages installed or upgrade
them, which itself would have garbage dependencies, so just blindly
killing all new garbage packages would prevent the upgrade (and actually
generate errors). What we should be doing is looking only at the version
we will have on the system, disregarding all old/new reverse dependencies.
Reported-By: Stuart Prescott (themill) on IRC
(cherry picked from commit 952171787a0b865c17d5c9476e272106383ae93a)
(cherry picked from commit 72ea04411b08bb9f25febdc4b4ca8d7b26206f2d)
(modified for 1.2.y by adjusting sections in test case)
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This prevents CI failures from happening in 1.3 and 1.2 and
might actually be more complete.
Gbp-Dch: ignore
(cherry picked from commit 803dabde5a4345ce83b3d2ffbd475786db9769d9)
(cherry picked from commit f55bd828265ff1577533393681dcb82536d402cf)
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Curl requires URLs to be urlencoded. We are however giving it
undecoded URLs. This causes it go completely nuts if there is
a space in the URI, producing requests like:
GET /a file HTTP/1.1
which the servers then interpret as a GET request for "/a" with
HTTP version "file" or some other non-sense.
This works around the issue by encoding the path component of
the URL. I'm not sure if we should encode other parts of the URL
as well, this one seems to do the trick for the actual issue at
hand.
A more correct fix is to avoid the dequoting and (re-)quoting
of URLs when a redirect occurs / a new request is sent. That's
been on the radar for probably a year or two now, but nobody
bothered implementing that yet.
LP: #1651923
(cherry picked from commit 994515e689dcc5f963f5fed58284831750a5da03)
(cherry picked from commit 438b1d78b4c33d0a97406f0a7071e3c413dc0aa3)
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In 105503b4b470c124bc0c271bd8a50e25ecbe9133 we got a warning implemented
for unreadable files which greatly improves the behavior of apt update
already as everything will work as long as we don't need the keys
included in these files. The behavior if they are needed is still
strange through as update will fail claiming missing keys and a manual
test (which the user will likely perform as root) will be successful.
Passing the new warning generated by apt-key through to apt is a bit
strange from an interface point of view, but basically duplicating the
warning code in multiple places doesn't feel right either. That means we
have no translation for the message through as apt-key has no i18n yet.
It also means that if the user has a bunch of sources each of them will
generate a warning for each unreadable file which could result in quite
a few duplicated warnings, but "too many" is better than none.
Closes: 834973
(cherry picked from commit 29c590951f812d9e9c4f17706e34f2c3315fb1f6)
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This is needed to make it possible to use installaptold multiple
times in a test case.
(originally part of commit 46e00c9062d09a642973e83a334483db1f310397)
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apt-key has inconsistent behaviour if it can't read a keyring file:
Commands like 'list' skipped silently over such keyrings while 'verify'
failed hard resulting in apt to report cconfusing gpg errors (#834973).
As a first step we teach apt-key to be more consistent here skipping in
all commands over unreadable keyrings, but issuing a warning in the
process, which is as usual for apt commands displayed at the end of the
run.
(cherry picked from commit 105503b4b470c124bc0c271bd8a50e25ecbe9133)
(removed the buffering of warnings in aptwarnings.log, as we do not
have a cleanup function where we can cat it)
LP: #1642386
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As reported upstream in
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71556
the implementation of std::get_time is currently not as accepting as
strptime is, especially in how hours should be formatted.
Just reverting 9febc2b238e1e322dce1f94ecbed46d595893b52 would be
possible, but then we would reopen the problems fixed by it, so instead
I opted here for a rewrite of the parsing logic which makes this method
a lot longer, but at least it provides the same benefits as the rewrite
in std::get_time was intended to give us and decouples us from the fix
of the issue in the standard library implementation of GCC.
LP: 1593583
(cherry picked from commit 1d742e01470bba27715a8191c50adde4b39c2f19)
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HTTP/1.1 hardcodes GMT (RFC 7231 §7.1.1.1) and what is good enough for the
internet must be good enough for us™ as we reuse the implementation
internally to parse (most) dates we encounter in various places like the
Release files with their Date and Valid-Until header fields.
Implementing a fully timezone aware parser just feels too hard for no
effective benefit as it would take 5+ years (= until LTS's are out of
fashion) until a repository could use non-UTC dates and expect it to
work. Not counting non-apt implementations which might or might not
only want to encounter UTC here as well.
As a bonus, this eliminates the use of an instance of setlocale in
libapt.
Closes: 819697
(cherry picked from commit 9febc2b238e1e322dce1f94ecbed46d595893b52)
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This fixes a regression introduced in
commit 8f858d560e3b7b475c623c4e242d1edce246025a
don't leak FD in AutoProxyDetect command return parsing
which accidentally made the proxy autodetection code also read
the scripts output on stderr, not only on stdout when it switched
the code from popen() to Popen().
Reported-By: Tim Small <tim@seoss.co.uk>
(cherry picked from commit 0ecceb5bb9cc8727c117195945b7116aceb984fe)
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If the dependency line does not contain spaces in the repository
but does in the dpkg status file (because dpkg normalized the
dependency list), the dpkg line might be longer than the line
in the repository. If it now happens to be longer than 1024
characters, it would be skipped, causing the hashes to be
out of date.
Note that we have to bump the minor cache version again as
this changes the format slightly, and we might get mismatches
with an older src cache otherwise.
Fixes Debian/apt#23
(cherry picked from commit 708e2f1fe99e6f067292bc909f03f12c181e4798)
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I actually tried to amend the previous commit, but apparently
I forgot to add the file mode change.
Gbp-Dch: ignore
(cherry picked from commit 832f95f4d018f18ff7b3d0381206f25b5a4373a6)
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If a Binary field contains one or more spaces before a comma, the
code produced a segmentation fault, as it accidentally set a pointer
to 0 instead of the value of the pointer.
If the comma is at the beginning of the field, the code would
create a binStartNext that points one element before the start
of the string, which is undefined behavior.
We also need to check that we do not exit the string during the
replacement of spaces before commas: A string of the form " ,"
would normally exit the boundary of the Buffer:
binStartNext = offset 1 ','
binEnd = offset 0 ' '
isspace_ascii(*binEnd) = true => --binEnd
=> binEnd = - 1
We get rid of the problem by only allowing spaces to be eliminated
if they are not the first character of the buffer:
binStartNext = offset 1 ','
binEnd = offset 0 ' '
binEnd > buffer = false, isspace_ascii(*binEnd) = true
=> exit loop
=> binEnd remains 0
(cherry picked from commit ce6cd75dc367b92f65e4fb539dd166d0f3361f8c)
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An absolute filename for a *.deb file starts with a /. A package with
the name of the file is inserted in the cache which is provided by the
"real" package for internal reasons. The pinning code detects a regex
based wildcard by having the regex start with /. That is no problem
as a / can not be included in a package name… expect that our virtual
filename package can and does.
We fix this two ways actually: First, a regex is only being considered a
regex if it also ends with / (we don't support flags). That stops our
problem with the virtual filename packages already, but to be sure we
also do not enter the loop if matcher and package name are equal.
It has to be noted that the creation of pins for virtual packages like
the here effected filename packages is pointless as only versions can be
pinned, but checking that a package is really purely virtual is too
costly compared to just creating an unused pin.
Closes: 835818
(cherry picked from commit e950b7e2f89b5e48192cd469c963a44fff9f1450)
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This fixes issues with chroots, but the goal here was to get
the test suite working on systems without dpkg.
(cherry picked from commit 2ed62ba6abcad809d1898a40950f86217af73812)
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It seems completely pointless from a server-POV to sent empty header
fields, so most of them don't do it (simply proven by this limitation
existing since day one) – but it is technically allowed by the RFC as
the surounding whitespaces are optional and Github seems to like sending
"X-Geo-Block-List:\r\n" since recently (bug reports in other http
clients indicate July) at least sometimes as the reporter claims to have
seen it on https only even through it can happen with both.
Closes: 834048
(cherry picked from commit 148c049150cc39f2e40894c1684dc2aefea1117e)
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If the URI had no password the username was ignored
(cherry picked from commit a1f3ac8aba0675321dd46d074af8abcbb10c19fd)
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APT (usually) knows which package is essential or not, so we can avoid
passing this force flag to dpkg unconditionally if the user hasn't
chosen a non-default essential handling obscuring the information.
(cherry picked from commit d3930f8716f439c229cd3d11813823d847a2ecff)
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Reported-By: cppcheck
Gbp-Dch: Ignore
(cherry picked from commit 196d590a99e309764e07c9dc23ea98897eebf53a)
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If another file in the transaction fails and hence dooms the transaction
we can end in a situation in which a -patched file (= rred writes the
result of the patching to it) remains in the partial/ directory.
The next apt call will perform the rred patching again and write its
result again to the -patched file, but instead of starting with an empty
file as intended it will override the content previously in the file
which has the same result if the new content happens to be longer than
the old content, but if it isn't parts of the old content remain in the
file which will pass verification as the new content written to it
matches the hashes and if the entire transaction passes the file will be
moved the lists/ directory where it might or might not trigger errors
depending on if the old content which remained forms a valid file
together with the new content.
This has no real security implications as no untrusted data is involved:
The old content consists of a base file which passed verification and a
bunch of patches which all passed multiple verifications as well, so the
old content isn't controllable by an attacker and the new one isn't
either (as the new content alone passes verification). So the best an
attacker can do is letting the user run into the same issue as in the
report.
Closes: #831762
(cherry picked from commit 0e071dfe205ad21d8b929b4bb8164b008dc7c474)
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Escape "+" in kernel package names when generating APT::NeverAutoRemove
list so it is not treated as a regular expression meta-character.
[Changed by David Kalnischkies: let test actually test the change]
Closes: #830159
(cherry picked from commit 130176bcb6ce65c98d5692196c55cc18b4c210e0)
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If we have files in partial/ from a previous invocation or similar such
those could be symlinks created by file:// sources. The code is
expecting only real files through and happily changes owner,
modification times and permission on the file the symlink points to
which tend to be files we have no business in touching in this way.
Permissions of symlinks shouldn't be changed, changing owner is usually
pointless to, but just to be sure we pick the easy way out and use
lchown, check for symlinks before chmod/utimes.
Reported-By: Mattia Rizzolo on IRC
(cherry picked from commit 3465138575e1fd0d5892d9b6be1ae232eb873460)
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Gbp-Dch: ignore
(cherry picked from commit 2a90aa7a064047fb1c8783b31720cd345018ca4a)
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This caused a crash because the cache was a nullptr.
Closes: #829651
(cherry picked from commit 8823972649b0d3049c9c0d34b5f1d31160234fb4)
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As the volatile sources are parsed last they were sorted behind the
dpkg/status file and hence are treated as a downgrade, which isn't
really what you want to happen as from a user POV its an upgrade.
(cherry picked from commit cb9ac09bd6a36e73c2dce1d529acde6e4d15e32d)
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If we have a (e.g. locally built) deb file installed and do try to
install it again apt complained about this being a downgrade, but it
wasn't as it is the very same version… it was just confused into not
merging the versions together which looks like a downgrade then.
The same size assumption is usually good, but given that volatile files
are parsed last (even after the status file) the base assumption no
longer holds, but is easy to adept without actually changing anything in
practice.
(cherry picked from commit e7edb2fef8370d54a4b8e5a01266e6eda81ef84e)
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Traditionally all providers are protected providing something as apt
can't know which of them is actually really providing the functionality
for the user ensuring that we don't propose the removal of used stuff,
but that is of course also keeping stuff around which could be removed.
That can cause the collection of multiple old providers until the
provided package is itself no longer needed (e.g. out-of-tree kernel
modules). We combat this by marking providers only from the newest
source package version so that old providers built by older versions of
the same source package can be garbage collected.
(cherry picked from commit a0ed43f7323b9d7976ed0ba8d437a42e24af9eaf)
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We deploy atomic renames for some files, but these renames also happen
if something about the file failed which isn't really the point of the
exercise…
Closes: 828908
(cherry picked from commit fc5db01bb7d1546944200d197866b0b5c378f100)
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Regression introduced in 8f858d560e3b7b475c623c4e242d1edce246025a.
Commands are probably better of always having output through as the
fall through to the generic proxy settings is likely not intended. As
documenting and implementing this more consistently is kind of a
regression through, it is split off into the next commit.
Closes: 827713
(cherry picked from commit cad1877559f3e1703c3fea4d081978e1b4bb4a0e)
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Seen first in #826783, but as this buglog also shows leaked uncompressed
files as well we don't close it just yet.
(cherry picked from commit 6f35be91c9e86e463bca7df6eadf05412c7b732c)
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This effects only compressors configured on the fly (rather then the
inbuilt ones as they use a library).
(cherry picked from commit bdc42211700ef0f6f40e4ef3f362e52d684d70fb)
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Setting the C++ locale via std::locale::global(std::locale("")); which
would otherwise default to the default C locale (aka: unaffected by
setlocale) effects the formatting of numeric types in IO streams, which
for output for humans is perfectly sensible, but breaks our many text
interfaces used and parsed by us and others without expecting the
numbers to be formatted.
Closes: #825396
(cherry picked from commit b58e2c7c56b1416a343e81f9f80cb1f02c128e25)
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The report mentions "apt list --upgradable", but there are others which
have inconsistent behavior ranging from segfaulting to doing something
with the partial (and hence incomplete) data. We had a recent report
about sources.list (#818628), this one mentions prefences, the obvious
next step is conf files… so the testcase is adapted to check for all
three in file and directory versions and run a bunch of commands each
time which should all have more or less the same behavior in such a case
(aka error out).
Closes: 824503
(cherry picked from commit fdf9eef4d96a18d0167708499c993e1174251e88)
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Using Pkg.CandVersion() here is wrong as its implementation will return
a candidate based just on the default policy settings ignoring user
preferences and otherwise set candidates (aka: it sidesteps the
pkgDepCache).
This causes M-A:same libraries to be detected as screwed even through
they aren't, so that they end up being kept back.
Reported-By: Felipe Sateler on IRC
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Always those silly mistakes. Do what I mean, not what I said…
Reported-By: Travis
Git-Dch: Ignore
(cherry picked from commit 737ce3135d332e3b6165ac1fac5c68e21ba1bdba)
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Failures can happen and APT regardless will do a partial cache
update anyway. Because APT ensures that the list directory is
in a sane state, it makes sense to also call success hooks if
success was only partial - otherwise it loses sync with APT.
Most importantly, this causes the appstream cache to be empty,
see launchpad bug #1562733.
This is somewhat overly optimistic though: As soon as any repository
has nonexisting optional files, the missing optional files are also
treated as success, which means a single broken repository without an
InRelease file still runs Success hooks, even though it really should
not.
(cherry picked from commit 35664152e47a1d4d712fd52e0f0a2dc8ed359d32)
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Versions which are only available in dpkg/status aren't installable and
apt doesn't pick them as candidate for this reason – for the same reason
such packages shouldn't be sent to an external solver via EDSP. The
packages are pinned to -1, but if the solver has strict pinning disabled
it could end up picking this version anyhow – which is a request apt can
not satisfy.
Reported-By: Maximiliano Curia <maxy@debian.org> on IRC
(cherry picked from commit 33190fe3d3c200dcd417cd336f9db11f5f4408d5)
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Broken in a4b8112b19763cbd2c12b81d55bc7d43a591d610.
If an item has a description which includes no space and is redirected
to another mirror the code which wants to rewrite the description
expects a space in there, but can't find it and the unguarded substr
command on the string will fail with an exception thrown…
Guarding it properly and everything is fine.
(cherry picked from commit 84ac6edfabe1c92d67e8d441e04216ad33c89165)
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Daniel Kahn Gillmor highlights in the bugreport that security isn't
improving by having the user import additional keys – especially as
importing keys securely is hard.
The bugreport was initially about dropping the warning to a notice, but
in given the previously mentioned observation and the fact that we
weren't printing a warning (or a notice) for expired or revoked keys
providing a signature we drop it completely as the code to display a
message if this was the only key is in another path – and is considered
critical.
Closes: 618445
(Backported from commit fb7b11ebb852fa255053ecab605bc9cfe9de0603)
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