IBM WebSphere Application Server Java hash data structure denial of service
|was-java-hash-dos (72298)||Medium Risk|
IBM WebSphere Application Server is vulnerable to a denial of service, caused by insufficient randomization of Java 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.
Denial of Service
Refer to IBM Security Bulletin 1595172 for patch, upgrade or suggested workaround information. See References.
For other distributions:
Apply the appropriate update for your system. See References.
- IBM APAR PM53930: Collisions in HashTable May Cause DoS Vulnerability.
- IBM Security Bulletin 1577532: Potential security vulnerability when using Web based applications on IBM WebSphere Application Server due to Java HashTable implementation vulnerability (PM53930).
- IBM Security Bulletin 1587015: Security Bulletin: Potential Security Vulnerabilities in IBM WebSphere Application Server.
- IBM Security Bulletin 1594731: Potential security vulnerability due to the implementation of Java HashTable in Information Archive (CVE-2012-0193).
- IBM Security Bulletin 1595172: Security Vulnerabilities fixed in IBM WebSphere Application Server 18.104.22.168.
- BID-51441: IBM WebSphere Application Server Hash Collision Denial Of Service Vulnerability
- CVE-2012-0193: IBM WebSphere Application Server (WAS) 6.0 through 22.214.171.124, 6.1 before 126.96.36.199, 7.0 before 188.8.131.52, and 8.0 before 184.108.40.206 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.
- OSVDB ID: 78321: IBM WebSphere Application Server Hash Collision Form Parameter Parsing Remote DoS
- SA47557: IBM WebSphere Application Server Hash Collision Denial of Service Vulnerability
- SA52905: IBM Information Archive Hash Collision Denial of Service Vulnerability
- IBM Information Archive 2.1
- IBM Information Archive 2.1.1
- IBM Information Archive 2.1.2
- IBM Information Archive 220.127.116.11
- IBM Information Archive 2.1.3
- IBM Information Archive 18.104.22.168
- IBM Information Archive 2.13.2
- IBM WebSphere Application Server 6.0
- IBM WebSphere Application Server 6.1
- IBM WebSphere Application Server 7.0
- IBM WebSphere Application Server 8.0
Jan 17, 2012
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.