CVE-2012-0021

Publication date 27 January 2012

Last updated 24 July 2024

Ubuntu priority

The 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.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
apache2	11.10 oneiric	Fixed 2.2.20-1ubuntu1.2
	11.04 natty	Fixed 2.2.17-1ubuntu1.5
	10.10 maverick	Not affected
	10.04 LTS lucid	Not affected
	8.04 LTS hardy	Not affected

Notes

tyhicks

apache2-mpm-worker is likely the only apache2-mpm affected

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
apache2	Upstream: http://svn.apache.org/viewvc?view=revision&revision=1227292

References

Related Ubuntu Security Notices (USN)