CVE-2012-3405

NameCVE-2012-3405
DescriptionThe vfprintf function in stdio-common/vfprintf.c in libc in GNU C Library (aka glibc) 2.14 and other versions does not properly calculate a buffer length, which allows context-dependent attackers to bypass the FORTIFY_SOURCE format-string protection mechanism and cause a denial of service (segmentation fault and crash) via a format string with a large number of format specifiers that triggers "desynchronization within the buffer size handling," a different vulnerability than CVE-2012-3404.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-165-1
NVD severitymedium (attack range: remote)
Debian Bugs681473

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
eglibc (PTS)wheezy2.13-38+deb7u10fixed
wheezy (security)2.13-38+deb7u11fixed
glibc (PTS)jessie2.19-18+deb8u9fixed
jessie (security)2.19-18+deb8u3fixed
sid, stretch2.24-10fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
eglibcsource(unstable)2.13-35low681473
eglibcsourcesqueeze2.11.3-4+deb6u5mediumDLA-165-1
glibcsource(unstable)2.13-35low681473

Notes

http://sourceware.org/bugzilla/show_bug.cgi?id=13446
http://sourceware.org/git/?p=glibc.git;a=commitdiff;h=a4647e727a2a52e1259474c13f4b13288938bed4
https://bugzilla.redhat.com/show_bug.cgi?id=833704
http://sourceware.org/git/?p=glibc.git;a=commitdiff;h=1d498daa95384e5c9ad5bcb35e7a996e5869ac39
http://www.openwall.com/lists/oss-security/2012/07/11/5
http://www.openwall.com/lists/oss-security/2012/07/11/17

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