CVE-2012-0021

NameCVE-2012-0021
DescriptionThe log_cookie function in mod_log_config.c in the mod_log_config module in the Apache HTTP Server 2.2.17 through 2.2.21, when a threaded MPM is used, does not properly handle a %{}C format string, which allows remote attackers to cause a denial of service (daemon crash) via a cookie that lacks both a name and a value.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitylow (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
apache2 (PTS)jessie (security), jessie2.4.10-10+deb8u12fixed
stretch2.4.25-3+deb9u6fixed
stretch (security)2.4.25-3+deb9u4fixed
buster, sid2.4.37-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
apache2source(unstable)2.2.22-1low
apache2sourcelenny(not affected)
apache2sourcesqueeze(not affected)

Notes

[squeeze] - apache2 <not-affected> (Introduced in 2.2.17)
[lenny] - apache2 <not-affected> (Introduced in 2.2.17)

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