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Test ID:
Category:Red Hat Local Security Checks
Title:RedHat Security Advisory RHSA-2003:293

The remote host is missing updates announced in
advisory RHSA-2003:293.

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

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 ( 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

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.

Please note that this update is available via
Red Hat Network. To use Red Hat Network, launch the Red
Hat Update Agent with the following command: up2date

Risk factor : Medium

CVSS Score:

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2003-0543
BugTraq ID: 8732
CERT/CC vulnerability note: VU#255484
Debian Security Information: DSA-393 (Google Search)
Debian Security Information: DSA-394 (Google Search)
En Garde Linux Advisory: ESA-20030930-027
Common Vulnerability Exposure (CVE) ID: CVE-2003-0544
CERT/CC vulnerability note: VU#380864
XForce ISS Database: openssl-asn1-sslclient-dos(43041)
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