RHEL 2.1 : openssl (RHSA-2003:293)

medium Nessus Plugin ID 12425

Synopsis

The remote Red Hat host is missing one or more security updates.

Description

Updated OpenSSL packages are available that fix ASN.1 parsing vulnerabilities.

OpenSSL is a commercial-grade, full-featured, and open source toolkit that implements Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols as well as a full-strength general purpose cryptography library.

NISCC testing of implementations of the SSL protocol uncovered two bugs in OpenSSL 0.9.6. The parsing of unusual ASN.1 tag values can cause OpenSSL to crash. A remote attacker could trigger this bug by sending a carefully crafted SSL client certificate to an application.
The effects of such an attack vary depending on the application targetted; against Apache the effects are limited, as the attack would only cause child processes to die and be replaced. An attack against other applications that use OpenSSL could result in a Denial of Service. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the names CVE-2003-0543 and CVE-2003-0544 to this issue.

These erratum packages contain a patch provided by the OpenSSL group that protects against this issue.

Because server applications are affected by this issue, users are advised to either restart all services that use OpenSSL functionality or reboot their systems after installing these updates.

Red Hat would like to thank NISCC and Stephen Henson for their work on this vulnerability.

These packages also include a patch from OpenSSL 0.9.6f which removes the calls to abort the process in certain circumstances. Red Hat would like to thank Patrik Hornik for notifying us of this issue.

Solution

Update the affected packages.

Plugin Details

Severity: Medium

ID: 12425

File Name: redhat-RHSA-2003-293.nasl

Version: 1.35

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 7/6/2004

Updated: 1/14/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:openssl-devel, p-cpe:/a:redhat:enterprise_linux:openssl, p-cpe:/a:redhat:enterprise_linux:openssl095a, cpe:/o:redhat:enterprise_linux:2.1, p-cpe:/a:redhat:enterprise_linux:openssl096, p-cpe:/a:redhat:enterprise_linux:openssl-perl

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/30/2003

Vulnerability Publication Date: 11/17/2003

Reference Information

CVE: CVE-2003-0543, CVE-2003-0544

BID: 8732

RHSA: 2003:293

Detections

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