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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 15:22:04 +0100
commit4ef9e0837ce139b398299431ae2294882f531d8e (patch)
tree8d1d1f8e657367cdbd91cca7ac8f22546ebe65cc /mirror-failure.py
parentb57c5fbc0511a6d0dd99e392aa49ccd2758c4089 (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)
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