CVE-2012-2733

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.

Category

5.0
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 12.96% Top 10%
Vendor Advisory marc.info Vendor Advisory opensuse.org Vendor Advisory ubuntu.com Vendor Advisory hp.com Vendor Advisory opensuse.org Vendor Advisory marc.info Vendor Advisory opensuse.org Vendor Advisory apache.org Vendor Advisory apache.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://marc.info/?l=bugtraq&m=136612293908376&w=2 vendor advisory
http://secunia.com/advisories/51371 third party advisory
http://lists.opensuse.org/opensuse-updates/2012-12/msg00089.html vendor advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19218 signature vdb entry
http://www.ubuntu.com/usn/USN-1637-1 vendor advisory
https://h20566.www2.hp.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c03748878 vendor advisory
http://tomcat.apache.org/security-7.html vendor advisory
http://www.securityfocus.com/bid/56402 vdb entry
http://svn.apache.org/viewvc?view=revision&revision=1356208
http://tomcat.apache.org/security-6.html vendor advisory
http://secunia.com/advisories/57126 third party advisory
http://lists.opensuse.org/opensuse-updates/2013-01/msg00037.html vendor advisory
http://marc.info/?l=bugtraq&m=139344343412337&w=2 vendor advisory
http://lists.opensuse.org/opensuse-updates/2012-12/msg00090.html vendor advisory
http://svn.apache.org/viewvc?view=revision&revision=1350301
http://www.securitytracker.com/id?1027729 vdb entry

Frequently Asked Questions

What is the severity of CVE-2012-2733?
CVE-2012-2733 has been scored as a medium severity vulnerability.
How to fix CVE-2012-2733?
To fix CVE-2012-2733, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2012-2733 being actively exploited in the wild?
It is possible that CVE-2012-2733 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~13% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.