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Alerts This Week
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Gentoo: GLSA-202301-15 Warning: OpenSSL Denial Of Service Vulnerability

gentoo
Calendar Grey February 21, 2014
Scroller Gentoo
A flaw within the TLS handshake process of OpenSSL might trigger a denial of service incident. Affected users are advised to apply the latest updates.
A vulnerability in OpenSSL's handling of TLS handshakes could result in a Denial of Service condition.

Summary

A flaw in the ssl3_take_mac function can result in a NULL pointer dereference.

Topics%20covered

Topics Covered

security advisory Gentoo software update OpenSSL Denial of Service TLS SSL

Resolution

All OpenSSL 1.0.1 users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=dev-libs/openssl-1.0.1f"

References

[ 1 ] CVE-2013-4353 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-4353

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201402-25
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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: Denial of Service
Date: February 21, 2014
Bugs: #497838
ID: 201402-25

Topics%20covered

Topics Covered

security advisory Gentoo software update OpenSSL Denial of Service TLS SSL

Synopsis

A vulnerability in OpenSSL's handling of TLS handshakes could result in a Denial of Service condition.

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 < 1.0.1f >= 1.0.1f < 1.0.1

Impact

===== A remote attacker could send a specially crafted TLS handshake, resulting in a Denial of Service condition.

Workaround

There is no known workaround at this time.