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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 15:19:21 +0100
commit51be550c5c38a2e1ddfc2af50a9fab73ccf78026 (patch)
tree08d21bb6de79a20b1355c69d04bd1eb1f7cf91dc /apt-pkg/contrib/sha2_internal.cc
parent6761dae5d0c372d132b0df91753120b59e30fd0e (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
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