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TITLE:
zlib Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA16137

VERIFY ADVISORY:
http://secunia.com/advisories/16137/

CRITICAL:
Moderately critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
zlib 1.x
http://secunia.com/product/3847/

DESCRIPTION:
Markus Oberhumer has reported a vulnerability in zlib, which can be
exploited by malicious people to cause a DoS (Denial of Service)
against a vulnerable application.

The vulnerability is caused due to the insufficient size of the code
table declared in inflate.h, and can be exploited to cause an
application using the zlib library to crash via a specially crafted
input file.

The vulnerability has been reported in version 1.2.2. Prior versions
may also be affected.

SOLUTION:
No updates are currently available from the vendor.

Restrict use of applications using the zlib library to only process
input from trusted sources.

Some Linux distributions have issued updated packages.

PROVIDED AND/OR DISCOVERED BY:
Markus Oberhumer

ORIGINAL ADVISORY:
Debian:
http://www.debian.org/security/2005/dsa-763

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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