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Wireshark: Denial of Service

Content:

1.  Gentoo Linux Security Advisory

Version Information

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



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Page updated May 07, 2008

Summary: This is a Gentoo Linux Security Advisory

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