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Gentoo GLSA-201203-12 Moderate: OpenSSL DoS And Info Leak

gentoo
Calendar Grey March 6, 2012
Dist Gentoo Esm H88
The Gentoo Linux Security Advisory GLSA 201203-12 warns of multiple vulnerabilities in OpenSSL, potentially jeopardizing system integrity and confidentiality
Multiple vulnerabilities have been found in OpenSSL, allowing remote attackers to cause a Denial of Service or obtain sensitive information.

Summary

Multiple vulnerabilities have been found in OpenSSL: * Timing differences for decryption are exposed by CBC mode encryption in OpenSSL's implementation of DTLS (CVE-2011-4108). * A policy check failure can result in a double-free error when X509_V_FLAG_POLICY_CHECK is set (CVE-2011-4109). * Clients and servers using SSL 3.0 handshakes do not clear the block cipher padding, allowing a record to contain up to 15 bytes of uninitialized memory, which could include sensitive information (CVE-2011-4576). * Assertion errors can occur during the handling of malformed X.509 certificates when OpenSSL is built with RFC 3779 support (CVE-2011-4577). * A resource management error can occur when OpenSSL's server gated cryptography (SGC) does not properly handle handshake restarts (CVE-2011-4619). * Invalid parameters in the GOST block cipher are not properly handled by the GOST ENGINE(CVE-2012-0027). * An incorrect fix for CVE-2011-4108 creates an unspecified vulnerability f...

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Topics%20covered

Topics Covered

security advisory denial of service gentoo info leak openssl

Resolution

All OpenSSL users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=dev-libs/openssl-1.0.0g"

References

[ 1 ] CVE-2011-4108 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-4108 [ 2 ] CVE-2011-4109 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-4109 [ 3 ] CVE-2011-4576 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-4576 [ 4 ] CVE-2011-4577 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-4577 [ 5 ] CVE-2011-4619 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-4619 [ 6 ] CVE-2012-0027 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0027 [ 7 ] CVE-2012-0050 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0050

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201203-12
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Concerns

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

Severity: Normal
Title: OpenSSL: Multiple vulnerabilities
Date: March 06, 2012
Bugs: #397695, #399365
ID: 201203-12

Topics%20covered

Topics Covered

security advisory denial of service gentoo info leak openssl

Synopsis

Multiple vulnerabilities have been found in OpenSSL, allowing remote attackers to cause a Denial of Service or obtain sensitive information.

Background

OpenSSL is an Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) as well as a general purpose cryptography library.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-libs/openssl < 1.0.0g *>= 0.9.8t >= 1.0.0g

Impact

===== A remote attacker may be able to cause a Denial of Service or obtain sensitive information, including plaintext passwords.

Workaround

There is no known workaround at this time.

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