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[ GLSA 200501-27 ] Ethereal: Multiple vulnerabilities
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GLSA
Bodhisattva
Bodhisattva


Joined: 25 Feb 2003
Posts: 3827
Location: Essen, Germany

PostPosted: Fri Jan 21, 2005 7:18 am    Post subject: [ GLSA 200501-27 ] Ethereal: Multiple vulnerabilities Reply with quote

Gentoo Linux Security Advisory

Title: Ethereal: Multiple vulnerabilities (GLSA 200501-27)
Severity: high
Exploitable: remote
Date: January 20, 2005
Bug(s): #78559
ID: 200501-27

Synopsis

Multiple vulnerabilities exist in Ethereal, which may allow an attacker to run arbitrary code, crash the program or perform DoS by CPU and disk utilization.

Background

Ethereal is a feature rich network protocol analyzer.

Affected Packages

Package: net-analyzer/ethereal
Vulnerable: < 0.10.9
Unaffected: >= 0.10.9
Architectures: All supported architectures


Description

There are multiple vulnerabilities in versions of Ethereal earlier than 0.10.9, including:
  • The COPS dissector could go into an infinite loop (CAN-2005-0006).
  • The DLSw dissector could cause an assertion, making Ethereal exit prematurely (CAN-2005-0007).
  • The DNP dissector could cause memory corruption (CAN-2005-0008).
  • The Gnutella dissector could cause an assertion, making Ethereal exit prematurely (CAN-2005-0009).
  • The MMSE dissector could free statically-allocated memory (CAN-2005-0010).
  • The X11 dissector is vulnerable to a string buffer overflow (CAN-2005-0084).


Impact

An attacker might be able to use these vulnerabilities to crash Ethereal, perform DoS by CPU and disk space utilization 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. However, it is strongly recommended to upgrade to the latest stable version.

Resolution

All Ethereal users should upgrade to the latest version:
Code:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-analyzer/ethereal-0.10.9"


References

CAN-2005-0006
CAN-2005-0007
CAN-2005-0008
CAN-2005-0009
CAN-2005-0010
CAN-2005-0084
Ethereal Release Notes


Last edited by GLSA on Sun May 07, 2006 4:54 pm; edited 1 time in total
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