DescriptionThe ap_proxy_ajp_request function in mod_proxy_ajp.c in mod_proxy_ajp in the Apache HTTP Server 2.2.x before 2.2.15 does not properly handle certain situations in which a client sends no request body, which allows remote attackers to cause a denial of service (backend server outage) via a crafted request, related to use of a 500 error code instead of the appropriate 400 error code.
SourceCVE (at NVD; oss-sec, fulldisc, OSVDB, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, web search, more)
NVD severitymedium (attack range: remote)
Debian/oldoldstablenot vulnerable.
Debian/oldstablenot vulnerable.
Debian/stablenot vulnerable.
Debian/testingnot vulnerable.
Debian/unstablenot vulnerable.

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
apache2 (PTS)squeeze2.2.16-6+squeeze12fixed
squeeze (security)2.2.16-6+squeeze11fixed
squeeze (lts)2.2.16-6+squeeze15fixed
wheezy (security), wheezy2.2.22-13+deb7u6fixed
jessie (security)2.4.10-10+deb8u1fixed
stretch, sid2.4.17-3fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


[lenny] - apache2 <no-dsa> (minor issue)
Will be fixed in s-p-u

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