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neon heap-based buffer overflow

Content:

1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200405-13 / neon
Release Date May 20, 2004
Latest Revision May 20, 2004: 01
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
net-misc/neon <= 0.24.5 >= 0.24.6 All supported architectures

Related bugreports: #51490

Synopsis

A vulnerability potentially allowing remote execution of arbitrary code has been discovered in the neon library.

2.  Impact Information

Background

neon provides an HTTP and WebDAV client library.

Description

Stefan Esser discovered a vulnerability in the code of the neon library : if a malicious date string is passed to the ne_rfc1036_parse() function, it can trigger a string overflow into static heap variables.

Impact

Depending on the application linked against libneon and when connected to a malicious WebDAV server, this vulnerability could allow execution of arbitrary code with the rights of the user running that application.

3.  Resolution Information

Workaround

There is no known workaround at this time. All users are advised to upgrade to the latest available version of neon.

Resolution

All users of neon should upgrade to the latest stable version:

Code Listing 3.1: Resolution

# emerge sync
# emerge -pv ">=net-misc/neon-0.24.6"
# emerge ">=net-misc/neon-0.24.6"

4.  References



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Page updated May 20, 2004

Summary: This is a Gentoo Linux Security Advisory

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