Apache Web Server Chunk Handling Vulnerability

A vulnerability exists in Apache Web servers that can lead to arbitrary code execution on the vulnerable system.

Ken Pfeil

June 18, 2002

1 Min Read
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ReportedJune 17, 2002, by CERT.

VERSIONS AFFECTED

 

  • Apache 2, all versions up to 2.0.36

  • Apache 1.3, all versions including 1.3.24

  • Apache 1.2, all versions 1.2.2 and later

 

DESCRIPTION

A vulnerability exists in Apache Web servers that can leadto arbitrary code execution on the vulnerable system. This vulnerability stemsfrom a flaw in the handling of certain chunk-encoded HTTPrequests that lets a remote attacker execute arbitrary code or cause a Denial ofService (DoS) attack.

VENDOR RESPONSE

The vendor, Apache,has released a detailedadvisory about this vulnerability and recommends that affected users eitherapply a patch supplied by an OEM or upgrade immediately to a newer version ofApache software available from Apache's Website.

 

CREDIT
Discovered by MarkLitchfield of Next Generation SecuritySoftware.

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