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Gentoo Linux Security Advisory GLSA 200610-11 |
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http://security.gentoo.org/ |
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|
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Severity: High |
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Title: OpenSSL: Multiple vulnerabilities |
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Date: October 24, 2006 |
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Bugs: #145510 |
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ID: 200610-11 |
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|
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Synopsis |
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======== |
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|
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OpenSSL contains multiple vulnerabilities including the possible remote |
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execution of arbitrary code. |
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|
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Background |
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========== |
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|
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OpenSSL is a toolkit implementing the Secure Sockets Layer, Transport |
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Layer Security protocols and a general-purpose cryptography library. |
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|
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 dev-libs/openssl < 0.9.8d >= 0.9.8d |
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*>= 0.9.7l |
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|
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Description |
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=========== |
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|
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Tavis Ormandy and Will Drewry, both of the Google Security Team, |
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discovered that the SSL_get_shared_ciphers() function contains a buffer |
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overflow vulnerability, and that the SSLv2 client code contains a flaw |
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leading to a crash. Additionally Dr. Stephen N. Henson found that the |
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ASN.1 handler contains two Denial of Service vulnerabilities: while |
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parsing an invalid ASN.1 structure and while handling certain types of |
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public key. |
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|
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Impact |
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====== |
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|
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An attacker could trigger the buffer overflow vulnerability by sending |
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a malicious suite of ciphers to an application using the vulnerable |
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function, and thus execute arbitrary code with the rights of the user |
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running the application. An attacker could also consume CPU and/or |
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memory by exploiting the Denial of Service vulnerabilities. Finally a |
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malicious server could crash a SSLv2 client through the SSLv2 |
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vulnerability. |
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|
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Workaround |
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========== |
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|
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There is no known workaround at this time. |
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|
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Resolution |
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========== |
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|
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All OpenSSL 0.9.8 users should upgrade to the latest version: |
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|
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=dev-libs/openssl-0.9.8d" |
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|
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All OpenSSL 0.9.7 users should upgrade to the latest version: |
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|
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=dev-libs/openssl-0.9.7l" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2006-2937 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2937 |
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[ 2 ] CVE-2006-2940 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2940 |
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[ 3 ] CVE-2006-3738 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3738 |
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[ 4 ] CVE-2006-4343 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4343 |
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|
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Availability |
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============ |
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|
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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http://security.gentoo.org/glsa/glsa-200610-11.xml |
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|
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Concerns? |
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========= |
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|
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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http://bugs.gentoo.org. |
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|
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License |
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======= |
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Copyright 2006 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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|
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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|
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http://creativecommons.org/licenses/by-sa/2.5 |