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Debian DSA-2162-1 : openssl - invalid memory access

medium Nessus Plugin ID 51978

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Synopsis

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

Description

Neel Mehta discovered that an incorrectly formatted ClientHello handshake message could cause OpenSSL to parse past the end of the message. This allows an attacker to crash an application using OpenSSL by triggering an invalid memory access. Additionally, some applications may be vulnerable to expose contents of a parsed OCSP nonce extension.

Packages in the oldstable distribution (lenny) are not affected by this problem.

Solution

Upgrade the openssl packages.

For the stable distribution (squeeze), this problem has been fixed in version 0.9.8o-4squeeze1.

See Also

https://packages.debian.org/source/squeeze/openssl

https://www.debian.org/security/2011/dsa-2162

Plugin Details

Severity: Medium

ID: 51978

File Name: debian_DSA-2162.nasl

Version: 1.20

Type: local

Agent: unix

Published: 2/15/2011

Updated: 1/4/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:6.0, p-cpe:/a:debian:debian_linux:openssl

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

Exploit Ease: No known exploits are available

Patch Publication Date: 2/14/2011

Reference Information

CVE: CVE-2011-0014

BID: 46264

DSA: 2162