CVE-2009-5155

NameCVE-2009-5155
DescriptionIn the GNU C Library (aka glibc or libc6) before 2.28, parse_reg_exp in posix/regcomp.c misparses alternatives, which allows attackers to cause a denial of service (assertion failure and application exit) or trigger an incorrect result by attempting a regular-expression match.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs924613

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
glibc (PTS)jessie, jessie (lts)2.19-18+deb8u14vulnerable
stretch (security)2.24-11+deb9u1vulnerable
stretch (lts), stretch2.24-11+deb9u7vulnerable
buster (security), buster, buster (lts)2.28-10+deb10u4fixed
bullseye2.31-13+deb11u11fixed
bullseye (security)2.31-13+deb11u10fixed
bookworm2.36-9+deb12u8fixed
bookworm (security)2.36-9+deb12u7fixed
sid, trixie2.40-3fixed
gnulib (PTS)jessie, jessie (lts)20140202+stable-2+deb8u1vulnerable
stretch20140202+stable-2+deb9u1vulnerable
buster20140202+stable-4fixed
bullseye20210102~ebaa53c-1fixed
bookworm20230209+stable-1fixed
sid, trixie20240701-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
eglibcsource(unstable)(unfixed)
glibcsource(unstable)2.28-1
gnulibsourceexperimental20180621~6979c25-1
gnulibsourcewheezy(unfixed)end-of-life
gnulibsource(unstable)20140202+stable-3.2924613

Notes

[stretch] - gnulib <no-dsa> (Minor issue)
[jessie] - gnulib <no-dsa> (Minor issue)
http://git.savannah.gnu.org/cgit/gnulib.git/commit/?id=5513b40999149090987a0341c018d05d3eea1272
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=22793
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=32806
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=34238
https://sourceware.org/bugzilla/show_bug.cgi?id=11053
https://sourceware.org/bugzilla/show_bug.cgi?id=18986
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=eb04c21373e2a2885f3d52ff192b0499afe3c672
[wheezy] - eglibc <no-dsa> (Minor issue)
[stretch] - glibc <ignored> (invasive fix with risk for regressions, exploitation requires attacker-provided regular expressions)
[jessie] - glibc <ignored> (invasive fix with risk for regressions, exploitation requires attacker-provided regular expressions)

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