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Vulnerability Assessment & Network Security Forums |
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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. Home >> Browse Vulnerability Assessment Database >> Mandrake Local Security Checks >> MDKSA-2003:035: openssl Vulnerability Assessment Details
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MDKSA-2003:035: openssl |
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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-2003:035 (openssl). Researchers discovered a timing-based attack on RSA keys that OpenSSL is generally vulnerable to, unless RSA blinding is enabled. Patches from the OpenSSL team have been applied to turn RSA blinding on by default. An extension of the 'Bleichenbacher attack' on RSA with PKS #1 v1.5 padding as used in SSL 3.0 and TSL 1.0 was also created by Czech cryptologists Vlastimil Klima, Ondrej Pokorny, and Tomas Rosa. This attack requires the attacker to open millions of SSL/TLS connections to the server they are attacking. This is done because the server's behaviour when faced with specially crafted RSA ciphertexts can reveal information that would in effect permit the attacker to perform a single RSA private key operation on a ciphertext of their choice, using the server's RSA key. Despite this, the server's RSA key is not compromised at any time. Patches from the OpenSSL team modify SSL/TLS server behaviour to avoid this vulnerability. Solution : http://wwwnew.mandriva.com/security/advisories?name=MDKSA-2003:035 Network Security Threat Level: High Networks Security ID: 7101, 7148 Vulnerability Assessment Copyright: This script is Copyright (C) 2004 Tenable Network Security |
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Security, Firewall, VPN |
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