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Gentoo Linux Advisory: Ethereal

Jul 10, 2004, 02:54 (0 Talkback[s])

Gentoo Linux Security Advisory GLSA 200407-08

http://security.gentoo.org/


Severity: High
Title: Ethereal: Multiple security problems
Date: July 09, 2004
Bugs: #56423
ID: 200407-08


Synopsis

Multiple vulnerabilities including one buffer overflow exist in Ethereal, which may allow an attacker to run arbitrary code or crash the program.

Background

Ethereal is a feature rich network protocol analyzer.

Affected packages

Package Vulnerable Unaffected
1 net-analyzer/ethereal <= 0.10.4 >= 0.10.5

Description

There are multiple vulnerabilities in versions of Ethereal earlier than 0.10.5, including:

  • In some cases the iSNS dissector could cause Ethereal to abort.
  • If there was no policy name for a handle for SMB SID snooping it could cause a crash.
  • A malformed or missing community string could cause the SNMP dissector to crash.

Impact

An attacker could use these vulnerabilities to crash Ethereal or even execute arbitrary code with the permissions of the user running Ethereal, which could be the root user.

Workaround

For a temporary workaround you can disable all affected protocol dissectors by selecting Analyze->Enabled Protocols... and deselecting them from the list. For SMB you can disable SID snooping in the SMB protocol preference. However, it is strongly recommended to upgrade to the latest stable version.

Resolution

All Ethereal users should upgrade to the latest stable version:

    # emerge sync
    # emerge -pv ">=net-analyzer/ethereal-0.10.5"
    # emerge ">=net-analyzer/ethereal-0.10.5"

References

[ 1 ] Ethereal enpa-sa-00015

http://www.ethereal.com/appnotes/enpa-sa-00015.html

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200407-08.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at http://bugs.gentoo.org.

License

Copyright 2004 Gentoo Foundation, Inc; referenced text belongs to its owner(s).

The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/1.0