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Debian DSA-2052-1 : krb5 - NULL pointer dereference

medium Nessus Plugin ID 46724

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Synopsis

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

Description

Shawn Emery discovered that in MIT Kerberos 5 (krb5), a system for authenticating users and services on a network, a NULL pointer dereference flaw in the Generic Security Service Application Program Interface (GSS-API) library could allow an authenticated remote attacker to crash any server application using the GSS-API authentication mechanism, by sending a specially crafted GSS-API token with a missing checksum field.

Solution

Upgrade the krb5 packages.

For the stable distribution (lenny), this problem has been fixed in version 1.6.dfsg.4~beta1-5lenny4.

See Also

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=582261

https://www.debian.org/security/2010/dsa-2052

Plugin Details

Severity: Medium

ID: 46724

File Name: debian_DSA-2052.nasl

Version: 1.18

Type: local

Agent: unix

Published: 5/26/2010

Updated: 1/4/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:krb5, cpe:/o:debian:debian_linux:5.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/24/2010

Reference Information

CVE: CVE-2010-1321

BID: 40235

DSA: 2052