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Debian DSA-1969-1 : krb5 - integer underflow

critical Nessus Plugin ID 44834

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Synopsis

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

Description

It was discovered that krb5, a system for authenticating users and services on a network, is prone to integer underflow in the AES and RC4 decryption operations of the crypto library. A remote attacker can cause crashes, heap corruption, or, under extraordinarily unlikely conditions, arbitrary code execution.

Solution

Upgrade the krb5 package.

For the old stable distribution (etch), this problem has been fixed in version 1.4.4-7etch8.

For the stable distribution (lenny), this problem has been fixed in version 1.6.dfsg.4~beta1-5lenny2.

See Also

https://www.debian.org/security/2010/dsa-1969

Plugin Details

Severity: Critical

ID: 44834

File Name: debian_DSA-1969.nasl

Version: 1.10

Type: local

Agent: unix

Published: 2/24/2010

Updated: 1/4/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.7

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:krb5, cpe:/o:debian:debian_linux:4.0, 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: 1/12/2010

Reference Information

CVE: CVE-2009-4212

BID: 37749

CWE: 189

DSA: 1969