CVE-2012-2733

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 8.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2012-11-16 · updated 2026-06-16
Weakness: CWE-20

Description

java/org/apache/coyote/http11/InternalNioInputBuffer.java in the HTTP NIO connector in Apache Tomcat 6.x before 6.0.36 and 7.x before 7.0.28 does not properly restrict the request-header size, which allows remote attackers to cause a denial of service (memory consumption) via a large amount of header data.

Affected products

Apache Tomcat: 6.0, 6.0.0, 6.0.0-alpha, 6.0.1, 6.0.1-alpha, 6.0.2 (+64)

References

http://lists.opensuse.org/opensuse-updates/2012-12/msg00089.html
http://lists.opensuse.org/opensuse-updates/2012-12/msg00090.html
http://lists.opensuse.org/opensuse-updates/2013-01/msg00037.html
http://marc.info/?l=bugtraq&m=136612293908376&w=2
http://marc.info/?l=bugtraq&m=139344343412337&w=2
http://secunia.com/advisories/51371
http://secunia.com/advisories/57126
http://svn.apache.org/viewvc?view=revision&revision=1350301
http://svn.apache.org/viewvc?view=revision&revision=1356208
http://tomcat.apache.org/security-6.html
http://tomcat.apache.org/security-7.html
http://www.securityfocus.com/bid/56402

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