Apache Tomcat hash denial of service

apache-tomcat-hash-dos (72016) The risk level is classified as MediumMedium Risk

Description:

Apache Tomcat is vulnerable to a denial of service, caused by insufficient randomization of hash data structures. By sending multiple specially-crafted HTTP POST requests to an affected application containing conflicting hash key values, a remote attacker could exploit this vulnerability to cause the consumption of CPU resources.

*CVSS:

Base Score: 5
  Access Vector: Network
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: None
  Availability Impact: Partial
 
Temporal Score: 4.1
  Exploitability: Functional
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Denial of Service

Remedy:

Upgrade to the latest version of Apache Tomcat (5.5.35, 6.0.35, or 7.0.23 or later), available from the Apache Tomcat Web site. See References.

For other distributions:
Apply the appropriate update for your system. See References.

References:

  • Apache Geronimo Web site: Fixed in Geronimo 2.1.8.
  • Apache Tomcat Web site: Apache Tomcat.
  • HPSBMU02747 SSRT100771 rev.1: HP OpenView Network Node Manager (OV NNM) Running Apache Tomcat, Remote Denial of Service (DoS).
  • HPSBUX02741 SSRT100728 rev.1: HP-UX Apache Running Tomcat Servlet Engine, Remote Denial of Service (DoS), Access Restriction Bypass.
  • HS12-003: DoS Vulnerability in Cosminexus.
  • HS12-019: Hitachi IT Operations Analyzer.
  • IBM Security Bulletin 1575700: A Tomcat fix for WebSphere Application Server Community Edition v3.0.0.0.
  • IBM Security Bulletin 1577274: Denial of service vulnerability in the web container of WebSphere Application Server Community Edition.
  • IBM Security Bulletin 1626697: Multiple vulnerabilities in IBM Cognos BI 8.4.1,10.1, 10.1.1 and 10.2 (CVE-2011-3026, CVE-2011-4858, CVE-2012-0498, CVE-2012-2177, CVE-2012-2193, CVE-2012-4835, CVE-2012-4836, CVE-2012-4837, CVE-2012-4840, CVE-2012-4858, CVE-2012-5081).
  • n.runs-SA-2011.004 : Denial of Service through hash table multi-collisions.
  • oCERT-2011-003: multiple implementations denial-of-service via hash algorithm collision.
  • BID-51200: Apache Tomcat Hash Collision Denial Of Service Vulnerability
  • BID-51345: IBM WebSphere Application Server Community Edition Tomcat Container Denial Of Service Vulnerability
  • CVE-2011-4858: Apache Tomcat before 5.5.35, 6.x before 6.0.35, and 7.x before 7.0.23 computes hash values for form parameters without restricting the ability to trigger hash collisions predictably, which allows remote attackers to cause a denial of service (CPU consumption) by sending many crafted parameters.
  • DSA-2401: tomcat6 -- several vulnerabilities
  • OSVDB ID: 78214: IBM WebSphere Application Server Community Edition Tomcat Container Multiple Parameter Request Parsing Remote DoS
  • OSVDB ID: 78483: Hitachi Cosminexus Multiple Product Hash Collision Form Parameter Parsing Remote DoS
  • OSVDB ID: 78573: Apache Tomcat CPU Consumption Parameter Saturation Remote DoS
  • RHSA-2012-0074: Important: jbossweb security update
  • RHSA-2012-0474: Moderate: tomcat5 security update
  • RHSA-2012-0475: Moderate: tomcat6 security update
  • RHSA-2012-0680: Moderate: tomcat5 security and bug fix update
  • RHSA-2012-0682: Moderate: tomcat6 security and bug fix update
  • SA47379: Apache Geronimo Multiple Vulnerabilities
  • SA47411: Apache Tomcat Web Form Hash Collision Denial of Service Vulnerability
  • SA47473: IBM WebSphere Application Server Community Edition Tomcat Container Denial of Service
  • SA47604: Hitachi Cosminexus Products Hash Collision Denial of Service Vulnerability
  • SA47903: HP-UX Apache Web Server Suite Multiple Denial of Service Vulnerabilities
  • SA48549: HP OpenView Network Node Manager Apache Tomcat Two Denial of Service Vulnerabilities
  • SA49829: Hitachi IT Operations Analyzer Hash Collision Denial of Service Vulnerability
  • US-CERT VU#903934: Hash table implementations vulnerable to algorithmic complexity attacks

Platforms Affected:

  • Apache Geronimo 2.1
  • Apache Geronimo 2.1.1
  • Apache Geronimo 2.1.2
  • Apache Geronimo 2.1.3
  • Apache Geronimo 2.1.4
  • Apache Geronimo 2.1.5
  • Apache Geronimo 2.1.6
  • Apache Geronimo 2.1.7
  • Apache Geronimo 2.1.8
  • Apache Tomcat 5
  • Apache Tomcat 6
  • Apache Tomcat 7
  • Hitachi Cosminexus 6.7
  • Hitachi Cosminexus 7
  • Hitachi Cosminexus 8.x
  • Hitachi Cosminexus Application Server 5
  • Hitachi Cosminexus Application Server 6
  • Hitachi Cosminexus Developer 6 Pro
  • Hitachi IT Operations Analyzer
  • Hitachi Ucosminexus Developer 6 Pro
  • Hitachi uCosminexus Service Architect
  • Hitachi uCosminexus Service Platform
  • HP HP-UX B.11.23
  • HP HP-UX B.11.31
  • HP OpenView Network Node Manager 7.0.1
  • IBM Cognos Business Intelligence 10.1
  • IBM Cognos Business Intelligence 10.1.1
  • IBM Cognos Business Intelligence 10.2
  • IBM Cognos Business Intelligence 8.4.1
  • IBM WebSphere Application Server 1.1 Community
  • IBM WebSphere Application Server 2.1 Community
  • IBM WebSphere Application Server 3.0 Community
  • JBoss Enterprise Application Platform 5
  • JBoss Enterprise Web Server
  • RedHat Enterprise Linux 5 Client
  • RedHat Enterprise Linux 5 Client Workstation
  • RedHat Enterprise Linux 5
  • RedHat Enterprise Linux 6 Server
  • RedHat Enterprise Linux 6 Workstation
  • RedHat Enterprise Linux Desktop 6
  • RedHat Enterprise Linux HPC Node 6

Reported:

Dec 28, 2011

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