| Description: | Description:
The remote host is missing updates announced in
advisory FLSA-2005:166939.
OpenSSL contained a software work-around for a bug in SSL handling in
Microsoft Internet Explorer version 3.0.2. This work-around is enabled
in most servers that use OpenSSL to provide support for SSL and TLS.
Yutaka Oiwa discovered that this work-around could allow an attacker,
acting as a man in the middle to force an SSL connection to use SSL
2.0 rather than a stronger protocol such as SSL 3.0 or TLS 1.0. The
Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the name CVE-2005-2969 to this issue.
A bug was fixed in the way OpenSSL creates DSA signatures. A cache
timing attack was fixed in a previous advisory which caused OpenSSL to
do private key calculations with a fixed time window. The DSA fix for
this was not complete and the calculations are not always performed within
a fixed-window. The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the name CVE-2005-0109 to this issue.
Testing performed by the OpenSSL group using the Codenomicon TLS Test
Tool uncovered a null-pointer assignment in the do_change_cipher_spec()
function. A remote attacker could perform a carefully crafted SSL/TLS
handshake against a server that uses the OpenSSL library in such a way
as to cause OpenSSL to crash. Depending on the server this could lead to
a denial of service. (CVE-2004-0079)
Users are advised to update to these erratum packages which contain
patches to correct these issues.
Note: After installing this update, users are advised to either
restart all services that use OpenSSL or restart their system.
Affected platforms:
Redhat 7.3
Redhat 9
Fedora Core 1
Fedora Core 2
Solution:
http://www.securityspace.com/smysecure/catid.html?in=FLSA-2005:166939
Risk factor : High
CVSS Score:
7.2
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