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authorJulian Andres Klode <jak@debian.org>2016-12-05 23:01:25 +0100
committerJulian Andres Klode <jak@debian.org>2016-12-08 15:31:19 +0100
commit538b04f7b31ad1e2fb04804574614762001be136 (patch)
tree9973cf3f9ed3313c487cf35e2a7569a48ca794a1 /apt-inst
parent66b687801a7bad997f2017b423f484604e9c0787 (diff)
SECURITY UPDATE: gpgv: Check for errors when splitting files (CVE-2016-1252)
This fixes a security issue where signatures of the InRelease files could be circumvented in a man-in-the-middle attack, giving attackers the ability to serve any packages they want to a system, in turn giving them root access. It turns out that getline() may not only return EINVAL as stated in the documentation - it might also return in case of an error when allocating memory. This fix not only adds a check that reading worked correctly, it also implicitly checks that all writes worked by reporting any other error that occurred inside the loop and was logged by apt. Affected: >= 0.9.8 Reported-By: Jann Horn <jannh@google.com> Thanks: Jann Horn, Google Project Zero for reporting the issue LP: #1647467 (cherry picked from commit 51be550c5c38a2e1ddfc2af50a9fab73ccf78026) (cherry picked from commit 4ef9e0837ce139b398299431ae2294882f531d8e) (cherry picked from commit 0bbbabb1b961b3b6541e7fdc8061fe6f282eafad)
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