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Debian DSA-324-1 : ethereal - several vulnerabilities

critical Nessus Plugin ID 15161

Synopsis

The remote Debian host is missing a security-related update.

Description

Several of the packet dissectors in ethereal contain string handling bugs which could be exploited using a maliciously crafted packet to cause ethereal to consume excessive amounts of memory, crash, or execute arbitrary code.

These vulnerabilities were announced in the following Ethereal security advisory :

Ethereal 0.9.4 in Debian 3.0 (woody) is affected by most of the problems described in the advisory, including :

 - The DCERPC dissector could try to allocate too much memory while trying to decode an NDR string.
 - Bad IPv4 or IPv6 prefix lengths could cause an overflow in the OSI dissector.

 - The tvb_get_nstringz0() routine incorrectly handled a zero-length buffer size.

 - The BGP, WTP, DNS, 802.11, ISAKMP, WSP, CLNP, and ISIS dissectors handled strings improperly.

The following problems do not affect this version :

 - The SPNEGO dissector could segfault while parsing an invalid ASN.1 value.
 - The RMI dissector handled strings improperly

as these modules are not present.

Solution

For the stable distribution (woody) these problems have been fixed in version 0.9.4-1woody5.

For the old stable distribution (potato) these problems will be fixed in a future advisory.

We recommend that you update your ethereal package.

See Also

http://www.debian.org/security/2003/dsa-324

Plugin Details

Severity: Critical

ID: 15161

File Name: debian_DSA-324.nasl

Version: 1.21

Type: local

Agent: unix

Published: 9/29/2004

Updated: 1/4/2021

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:3.0, p-cpe:/a:debian:debian_linux:ethereal

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 6/18/2003

Reference Information

CVE: CVE-2003-0428, CVE-2003-0429, CVE-2003-0431, CVE-2003-0432

BID: 7878, 7880, 7881, 7883

DSA: 324