Title: Ethereal SPNEGO Dissector Denial Of Service Vulnerability
Severity: HIGH
Description:
Ethereal is a freely available, open source network traffic analysis tool. It is maintained by the Ethereal Project and is available for most Unix and Linux variants as well as Microsoft Windows operating systems.
The SPNEGO dissector of Ethereal, when parsing certain ASN.1 codes, may cause a segmentation fault.
The precise technical details of this vulnerability are currently unknown. This BID will be updated as further information is available.
An attacker may be able to exploit this vulnerability by crafting a specially formed packet with an invalid ASN.1 value and sending it to a system using the vulnerable dissector.
Due to the nature of this vulnerability, it may be possible for an attacker to create a situation in which sensitive memory could be overwritten. If successful this may allow for the execution of arbitrary code with the privileges of the Ethereal process.
This vulnerability affects Ethereal 0.9.12 and earlier.
Affected Products:
- Conectiva Linux 6.0.0
- Conectiva Linux 7.0.0
- Conectiva Linux 8.0.0
- Conectiva Linux 9.0.0
- Conectiva Linux Enterprise Edition 1.0.0
- Debian Linux 3.0.0 alpha
- Debian Linux 3.0.0 arm
- Debian Linux 3.0.0 hppa
- Debian Linux 3.0.0 ia-32
- Debian Linux 3.0.0 ia-64
- Debian Linux 3.0.0 m68k
- Debian Linux 3.0.0 mips
- Debian Linux 3.0.0 mipsel
- Debian Linux 3.0.0 ppc
- Debian Linux 3.0.0 s/390
- Debian Linux 3.0.0 sparc
- Ethereal Group Ethereal 0.9.0
- Ethereal Group Ethereal 0.9.1
- Ethereal Group Ethereal 0.9.10
- Ethereal Group Ethereal 0.9.11
- Ethereal Group Ethereal 0.9.12
- Ethereal Group Ethereal 0.9.2
- Ethereal Group Ethereal 0.9.3
- Ethereal Group Ethereal 0.9.4
- Ethereal Group Ethereal 0.9.5
- Ethereal Group Ethereal 0.9.6
- Ethereal Group Ethereal 0.9.7
- Ethereal Group Ethereal 0.9.8
- Ethereal Group Ethereal 0.9.9
- MandrakeSoft Linux Mandrake 9.1.0
- MandrakeSoft Linux Mandrake 9.1.0 ppc
- RedHat Enterprise Linux AS 2.1
- RedHat Enterprise Linux ES 2.1
- RedHat Enterprise Linux WS 2.1
- RedHat Linux 6.2.0 alpha
- RedHat Linux 6.2.0 i386
- RedHat Linux 6.2.0 sparc
- RedHat Linux 7.0.0 alpha
- RedHat Linux 7.0.0 i386
- RedHat Linux 7.0.0 sparc
- RedHat Linux 7.1.0 alpha
- RedHat Linux 7.1.0 i386
- RedHat Linux 7.1.0 ia64
- RedHat Linux 7.2.0
- RedHat Linux 7.2.0 alpha
- RedHat Linux 7.2.0 i386
- RedHat Linux 7.2.0 ia64
- RedHat Linux 7.3.0
- RedHat Linux 7.3.0 i386
- RedHat Linux 8.0.0
- RedHat Linux 8.0.0 i386
- RedHat Linux 9.0.0 i386
- RedHat Linux Advanced Work Station 2.1.0
- SCO OpenLinux Server 3.1.1
- SCO OpenLinux Workstation 3.1.1
- Terra Soft Solutions Yellow Dog Linux 3.0.0
References:
- Conectiva: CLSA-2003:719 ethereal
- Ethereal Group: Several security problems in Ethereal 0.9.12
- Red Hat: RHSA-2003:077-13 Updated Ethereal packages fix security issues
- Yellow Dog: YDU-20030718-2 Updated ethereal packages are available.
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