IBM WebSphere HTTP Host: header buffer overflow
|websphere-host-header-bo (10140)||Low Risk|
IBM WebSphere is vulnerable to a denial of service attack, caused by a buffer overflow that can occur when handling large HTTP headers. By sending an HTTP request for a .jsp file with an overly large HTTP Host: header, a remote attacker could overflow a buffer and cause the Web service to crash. The Web service may need to be restarted to regain normal functionality.
Note: This vulnerability may also be exploited using other large HTTP header fields, but it is unknown whether it can be exploited to execute code on the server.
Denial of Service
Upgrade to the latest version of IBM WebSphere (4.0.4 or later), as listed in IBM eFix (APAR): PQ62144. See References.
Apply the PQ62144 patch, available from the IBM Web site. See References.
- IBM eFix (APAR): PQ62144: Large header can cause webserver to crash.
- IBM Web site: PQ62144, 4.0.3: Possible security exposure with web servers plugin.
- VulnWatch Mailing List, Thu Sep 19 2002 - 03:51:20 CDT : KPMG-2002035: IBM Websphere Large Header DoS.
- BID-5749: IBM WebSphere Large HTTP Header Buffer Overflow Vulnerability
- BID-575: Solaris sdtcm_convert File Creation Vulnerability
- CVE-2002-1153: IBM Websphere 4.0.3 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via an HTTP request with long HTTP headers, such as Host.
- OSVDB ID: 2092: IBM WebSphere HTTP Request Header Remote Overflow
- IBM WebSphere Application Server 4.0.1
- IBM WebSphere Application Server 4.0.2
- IBM WebSphere Application Server 4.0.3
Sep 19, 2002
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