Cherokee: Format string vulnerability

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200411-02 / cherokee
Release Date	November 01, 2004
Latest Revision	May 22, 2006: 02
Impact	high
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
www-servers/cherokee	<= 0.4.17	>= 0.4.17.1	All supported architectures

Related bugreports: #67667

Synopsis

Cherokee contains a format string vulnerability that could lead to denial of service or the execution of arbitary code.

2. Impact Information

Background

Cherokee is an extra-light web server.

Description

Florian Schilhabel from the Gentoo Linux Security Audit Team found a format string vulnerability in the cherokee_logger_ncsa_write_string() function.

Impact

Using a specially crafted URL when authenticating via auth_pam, a malicious user may be able to crash the server or execute arbitrary code on the target machine with permissions of the user running Cherokee.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All Cherokee users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=www-servers/cherokee-0.4.17.1"

4. References

CVE-2004-1097

Page updated November 01, 2004

Summary: This is a Gentoo Linux Security Advisory

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