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Home >> Browse Vulnerability Assessment Database >> Mandrake Local Security Checks >> MDKSA-2003:098: openssl

Vulnerability Assessment Details

MDKSA-2003:098: openssl

Vulnerability Assessment Summary
Check for the version of the openssl package

Detailed Explanation for this Vulnerability Assessment

The remote host is missing the patch for the advisory MDKSA-2003:098 (openssl).

Two bugs were discovered in OpenSSL 0.9.6 and 0.9.7 by NISCC. The parsing of
unusual ASN.1 tag values can cause OpenSSL to crash, which could be triggered by
a remote attacker by sending a carefully-crafted SSL client certificate to an
application. Depending upon the application targetted, the effects seen will
in some cases a DoS (Denial of Service) could be performed, in others
nothing noticeable or adverse may happen. These two vulnerabilities have been
assigned CVE-2003-0543 and CVE-2003-0544.
Additionally, NISCC discovered a third bug in OpenSSL 0.9.7. Certain ASN.1
encodings that are rejected as invalid by the parser can trigger a bug in
deallocation of a structure, leading to a double free. This can be triggered by
a remote attacker by sending a carefully-crafted SSL client certificate to an
application. This vulnerability may be exploitable to execute arbitrary code.
This vulnerability has been assigned CVE-2003-0545.
The packages provided have been built with patches provided by the OpenSSL group
that resolve these issues.
A number of server applications such as OpenSSH and Apache that make use of
OpenSSL need to be restarted after the update has been applied to ensure that
they are protected from these issues. Users are encouraged to restart all of
these services or reboot their systems.

Solution :
Network Security Threat Level: High

Networks Security ID:

Vulnerability Assessment Copyright: This script is Copyright (C) 2004 Tenable Network Security

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