Vulnerability Assessment & Network Security Forums
If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.
Vulnerability Assessment Details
Detailed Explanation for this Vulnerability Assessment
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.
CVE-2002-0655 references overflows in buffers used to hold ASCII
representations of integers on 64 bit platforms. CVE-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. CVE-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
These vulnerabilities are also present in Debian 2.2 (potato). Fixed
packages are available in openssl094_0.9.4-6.potato.2 and
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 : http://www.debian.org/security/2002/dsa-136
Network Security Threat Level: High
Networks Security ID: 5353, 5361, 5362, 5363, 5364, 5366
Vulnerability Assessment Copyright: This script is (C) 2006 Michel Arboi
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