Test ID:	1.3.6.1.4.1.25623.1.0.802378
Category:	Web Servers
Title:	Apache Tomcat Hash Collision Denial Of Service Vulnerability
Summary:	Apache Tomcat Server is prone to a denial of service (DoS) vulnerability.
Description:	Summary: Apache Tomcat Server is prone to a denial of service (DoS) vulnerability. Vulnerability Insight: The flaw is due to an error within a hash generation function when computing hash values for form parameter and updating a hash table. This can be exploited to cause a hash collision resulting in high CPU consumption via a specially crafted form sent in a HTTP POST request. Vulnerability Impact: Successful exploitation could allow remote attackers to cause a denial of service via a specially crafted form sent in a HTTP POST request. Affected Software/OS: Apache Tomcat version before 5.5.35, 6.x to 6.0.34 and 7.x to 7.0.22 on Windows. Solution: Apply patch or upgrade Apache Tomcat to 5.5.35, 6.0.35, 7.0.23 or later. CVSS Score: 5.0 CVSS Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2011-4858 BugTraq ID: 51200 http://www.securityfocus.com/bid/51200 CERT/CC vulnerability note: VU#903934 http://www.kb.cert.org/vuls/id/903934 Debian Security Information: DSA-2401 (Google Search) http://www.debian.org/security/2012/dsa-2401 HPdes Security Advisory: HPSBMU02747 http://marc.info/?l=bugtraq&m=133294394108746&w=2 HPdes Security Advisory: HPSBUX02741 http://marc.info/?l=bugtraq&m=132871655717248&w=2 HPdes Security Advisory: HPSBUX02860 http://marc.info/?l=bugtraq&m=136485229118404&w=2 HPdes Security Advisory: SSRT100728 HPdes Security Advisory: SSRT100771 HPdes Security Advisory: SSRT101146 http://www.nruns.com/_downloads/advisory28122011.pdf http://www.ocert.org/advisories/ocert-2011-003.html https://github.com/FireFart/HashCollision-DOS-POC/blob/master/HashtablePOC.py http://mail-archives.apache.org/mod_mbox/tomcat-announce/201112.mbox/%3c4EFB9800.5010106@apache.org%3e https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18886 RedHat Security Advisories: RHSA-2012:0074 http://rhn.redhat.com/errata/RHSA-2012-0074.html RedHat Security Advisories: RHSA-2012:0075 http://rhn.redhat.com/errata/RHSA-2012-0075.html RedHat Security Advisories: RHSA-2012:0076 http://rhn.redhat.com/errata/RHSA-2012-0076.html RedHat Security Advisories: RHSA-2012:0077 http://rhn.redhat.com/errata/RHSA-2012-0077.html RedHat Security Advisories: RHSA-2012:0078 http://rhn.redhat.com/errata/RHSA-2012-0078.html RedHat Security Advisories: RHSA-2012:0089 http://rhn.redhat.com/errata/RHSA-2012-0089.html RedHat Security Advisories: RHSA-2012:0325 http://rhn.redhat.com/errata/RHSA-2012-0325.html RedHat Security Advisories: RHSA-2012:0406 http://rhn.redhat.com/errata/RHSA-2012-0406.html http://secunia.com/advisories/48549 http://secunia.com/advisories/48790 http://secunia.com/advisories/48791 http://secunia.com/advisories/54971 http://secunia.com/advisories/55115
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