Wireshark: Denial of Service

Security Team Contact Address

Updated May 07, 2008

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200805-05 / wireshark
Release Date	May 07, 2008
Latest Revision	May 07, 2008: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-analyzer/wireshark	< 1.0.0	>= 1.0.0	All supported architectures

Related bugreports: #215276

Synopsis

Multiple Denial of Service vulnerabilities have been discovered in Wireshark.

2. Impact Information

Background

Wireshark is a network protocol analyzer with a graphical front-end.

Description

Errors exist in:

the X.509sat dissector because of an uninitialized variable and the Roofnet dissector because a NULL pointer may be passed to the g_vsnprintf() function (CVE-2008-1561).
the LDAP dissector because a NULL pointer may be passed to the ep_strdup_printf() function (CVE-2008-1562).
the SCCP dissector because it does not reset a pointer once the packet has been processed (CVE-2008-1563).

Impact

A remote attacker could exploit these vulnerabilities by sending a malformed packet or enticing a user to read a malformed packet trace file, causing a Denial of Service.

3. Resolution Information

Workaround

Disable the X.509sat, Roofnet, LDAP, and SCCP dissectors.

Resolution

All Wireshark users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-analyzer/wireshark-1.0.0"

4. References