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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 >> Gentoo Local Security Checks >> [GLSA-200610-11] OpenSSL: Multiple vulnerabilities Vulnerability Assessment Details
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[GLSA-200610-11] OpenSSL: Multiple vulnerabilities |
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OpenSSL: Multiple vulnerabilities Detailed Explanation for this Vulnerability Assessment The remote host is affected by the vulnerability described in GLSA-200610-11 (OpenSSL: Multiple vulnerabilities) Tavis Ormandy and Will Drewry, both of the Google Security Team, discovered that the SSL_get_shared_ciphers() function contains a buffer overflow vulnerability, and that the SSLv2 client code contains a flaw leading to a crash. Additionally Dr. Stephen N. Henson found that the ASN.1 handler contains two Denial of Service vulnerabilities: while parsing an invalid ASN.1 structure and while handling certain types of public key. Impact A possible hacker could trigger the buffer overflow vulnerability by sending a malicious suite of ciphers to an application using the vulnerable function, and thus execute arbitrary code with the rights of the user running the application. A possible hacker could also consume CPU and/or memory by exploiting the Denial of Service vulnerabilities. Finally a malicious server could crash a SSLv2 client through the SSLv2 vulnerability. Workaround There is no known workaround at this time. References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2937 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2940 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3738 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4343 Solution: All OpenSSL 0.9.8 users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=dev-libs/openssl-0.9.8d" All OpenSSL 0.9.7 users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=dev-libs/openssl-0.9.7l" Network Security Threat Level: High Networks Security ID: Vulnerability Assessment Copyright: (C) 2006 Michel Arboi |
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