CVE-2015-8777

NameCVE-2015-8777
DescriptionThe process_envvars function in elf/rtld.c in the GNU C Library (aka glibc or libc6) before 2.23 allows local users to bypass a pointer-guarding protection mechanism via a zero value of the LD_POINTER_GUARD environment variable.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-316-1, DSA-3480-1
NVD severitylow (attack range: local)
Debian Bugs798316, 801691

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+deb7u12fixed
glibc (PTS)jessie (security), jessie2.19-18+deb8u10fixed
stretch (security), stretch2.24-11+deb9u1fixed
buster2.25-3fixed
sid2.25-4fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
eglibcsource(unstable)(unfixed)low
eglibcsourcesqueeze2.11.3-4+deb6u7low
eglibcsourcewheezy2.13-38+deb7u10lowDSA-3480-1
glibcsource(unstable)2.21-1low798316, 801691
glibcsourcejessie2.19-18+deb8u2low

Notes

http://www.openwall.com/lists/oss-security/2015/09/05/8
Upstream bug https://sourceware.org/bugzilla/show_bug.cgi?id=18928
https://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commit;h=a014cecd82b71b70a6a843e250e06b541ad524f7

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