Null httpd negative "Content-Length" heap buffer overflow

null-httpd-contentlength-bo (10160) The risk level is classified as HighHigh Risk

Description:

Null httpd is vulnerable to a buffer overflow, caused by improper handling of negative "Content-Length" values. By sending an HTTP request with a negative value in the "Content-Length" header field, a remote attacker could overflow a buffer and cause the Web server to crash or execute arbitrary code on the system.


Consequences:

Gain Access

Remedy:

Upgrade to the latest version of Null httpd (0.5.1 or later), available from the Freshmeat Web site. See References.

References:

Platforms Affected:

  • NullLogic Null httpd 0.5.0

Reported:

Sep 22, 2002

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