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Gentoo Linux Security Advisory GLSA 201203-12 |
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http://security.gentoo.org/ |
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|
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Severity: Normal |
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Title: OpenSSL: Multiple vulnerabilities |
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Date: March 06, 2012 |
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Bugs: #397695, #399365 |
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ID: 201203-12 |
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|
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Synopsis |
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======== |
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|
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Multiple vulnerabilities have been found in OpenSSL, allowing remote |
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attackers to cause a Denial of Service or obtain sensitive information. |
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|
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Background |
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========== |
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|
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OpenSSL is an Open Source toolkit implementing the Secure Sockets Layer |
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(SSL v2/v3) and Transport Layer Security (TLS v1) as well as a general |
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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 < 1.0.0g *>= 0.9.8t |
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>= 1.0.0g |
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|
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Description |
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=========== |
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|
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Multiple vulnerabilities have been found in OpenSSL: |
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|
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* Timing differences for decryption are exposed by CBC mode encryption |
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in OpenSSL's implementation of DTLS (CVE-2011-4108). |
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* A policy check failure can result in a double-free error when |
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X509_V_FLAG_POLICY_CHECK is set (CVE-2011-4109). |
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* Clients and servers using SSL 3.0 handshakes do not clear the block |
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cipher padding, allowing a record to contain up to 15 bytes of |
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uninitialized memory, which could include sensitive information |
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(CVE-2011-4576). |
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* Assertion errors can occur during the handling of malformed X.509 |
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certificates when OpenSSL is built with RFC 3779 support |
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(CVE-2011-4577). |
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* A resource management error can occur when OpenSSL's server gated |
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cryptography (SGC) does not properly handle handshake restarts |
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(CVE-2011-4619). |
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* Invalid parameters in the GOST block cipher are not properly handled |
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by the GOST ENGINE(CVE-2012-0027). |
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* An incorrect fix for CVE-2011-4108 creates an unspecified |
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vulnerability for DTLS applications using OpenSSL (CVE-2012-0050). |
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|
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Impact |
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====== |
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|
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A remote attacker may be able to cause a Denial of Service or obtain |
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sensitive information, including plaintext passwords. |
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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 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-1.0.0g" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2011-4108 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-4108 |
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[ 2 ] CVE-2011-4109 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-4109 |
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[ 3 ] CVE-2011-4576 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-4576 |
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[ 4 ] CVE-2011-4577 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-4577 |
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[ 5 ] CVE-2011-4619 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-4619 |
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[ 6 ] CVE-2012-0027 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0027 |
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[ 7 ] CVE-2012-0050 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0050 |
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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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|
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http://security.gentoo.org/glsa/glsa-201203-12.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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https://bugs.gentoo.org. |
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|
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License |
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======= |
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|
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Copyright 2012 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 |