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Debian DSA-136-1 : openssl - multiple remote exploits

high Nessus Plugin ID 14973

Synopsis

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

Description

The OpenSSL development team has announced that a security audit by A.L. Digital Ltd and The Bunker, under the DARPA CHATS program, has revealed remotely exploitable buffer overflow conditions in the OpenSSL code. Additionally, the ASN1 parser in OpenSSL has a potential DoS attack independently discovered by Adi Stav and James Yonan.

CAN-2002-0655 references overflows in buffers used to hold ASCII representations of integers on 64 bit platforms. CAN-2002-0656 references buffer overflows in the SSL2 server implementation (by sending an invalid key to the server) and the SSL3 client implementation (by sending a large session id to the client). The SSL2 issue was also noticed by Neohapsis, who have privately demonstrated exploit code for this issue. CAN-2002-0659 references the ASN1 parser DoS issue.

These vulnerabilities have been addressed for Debian 3.0 (woody) in openssl094_0.9.4-6.woody.2, openssl095_0.9.5a-6.woody.1 and openssl_0.9.6c-2.woody.1.

These vulnerabilities are also present in Debian 2.2 (potato). Fixed packages are available in openssl094_0.9.4-6.potato.2 and openssl_0.9.6c-0.potato.4.

A worm is actively exploiting this issue on internet-attached hosts;
we recommend you upgrade your OpenSSL as soon as possible. Note that you must restart any daemons using SSL. (E.g., ssh or ssl-enabled apache.) If you are uncertain which programs are using SSL you may choose to reboot to ensure that all running daemons are using the new libraries.

Solution

Upgrade the affected openssl package.

See Also

http://www.debian.org/security/2002/dsa-136

Plugin Details

Severity: High

ID: 14973

File Name: debian_DSA-136.nasl

Version: 1.29

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: High

Score: 7.0

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 7.7

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

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:2.2, p-cpe:/a:debian:debian_linux:openssl, cpe:/o:debian:debian_linux:3.0

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/30/2002

Vulnerability Publication Date: 7/30/2002

Exploitable With

CANVAS (CANVAS)

Core Impact

Reference Information

CVE: CVE-2002-0655, CVE-2002-0656, CVE-2002-0657, CVE-2002-0659, CVE-2005-1730

BID: 5353, 5361, 5362, 5363, 5364, 5366

DSA: 136