Ethereal SPNEGO dissector denial of service
| ethereal-spnego-dos (16151) |  Low Risk |
Description:
Ethereal is vulnerable to a denial of service attack. A remote attacker could cause a null pointer dereference in the SPNEGO dissector, which would cause Ethereal to crash.
Platforms Affected:
- Ethereal, Ethereal 0.9.8 - 0.10.3
- Gentoo, Linux
- RedHat, Enterprise Linux 2.1 WS
- RedHat, Enterprise Linux 2.1 AW
- RedHat, Enterprise Linux 2.1 AS
- RedHat, Enterprise Linux 2.1 ES
- RedHat, Enterprise Linux 3 WS
- RedHat, Enterprise Linux 3 AS
- RedHat, Enterprise Linux 3 Desktop
- RedHat, Enterprise Linux 3 ES
- RedHat, Linux 3.0
- RedHat, Linux Advanced Workstation 2.1 Itanium
- SuSE, SuSE Linux
Remedy:
Upgrade to the latest version of Ethereal (0.10.4 or later), when it becomes available from the Ethereal Web site. See References.
For Red Hat Linux:
Upgrade to the latest Ethereal package, as listed below. Refer to RHSA-2004:234-06 for more information. See References.
Red Hat Enterprise Linux AS (v. 2.1), ES (v. 2.1), WS (v. 2.1), and Red Hat Linux Advanced Workstation 2.1 for the Itanium Processor: 0.10.3-0.AS21.3 or later
Red Hat Enterprise Linux AS (v. 3), ES (v. 3), WS (v. 3), Desktop: 0.10.3-0.30E.2.x86 or later
For SuSE Linux:
Apply the appropriate fixed packages via the SuSE FTP server or the YaST Online Update, as listed in SuSE Security Summary Report SUSE-SR:2004:002. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
Denial of Service
References:
- CIAC Information Bulletin O-150, Multiple Security Problems in Ethereal 0.10.3 at http://www.ciac.org/ciac/bulletins/o-150.shtml.
- Ethereal Application Note enpa-sa-00014, Multiple security problems in Ethereal 0.10.3 at http://www.ethereal.com/appnotes/enpa-sa-00014.html.
- Ethereal Web site, The Ethereal Network Analyzer at http://www.ethereal.com/.
- BID-10347: Ethereal Multiple Protocol Dissector Vulnerabilities
- CVE-2004-0506: The SPNEGO dissector in Ethereal 0.9.8 to 0.10.3 allows remote attackers to cause a denial of service (crash) via unknown attack vectors that cause a null pointer dereference.
- GLSA-200406-01: Ethereal: Multiple security problems
- RHSA-2004-234: ethereal security update
- SA11608: Ethereal Multiple Vulnerabilities
- SECTRACK ID: 1010158: Ethereal SIP, AIM, SPNEGO, and MMSE Dissector Flaws Allow Remote Users to Crash Ethereal or Execute Arbitrary Code
- SUSE-SR:2004:002: SUSE Security Summary Report
Reported:
May 13, 2004
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