OpenSSL: Denial of Service — GLSA 201402-25

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

Affected Packages

dev-libs/openssl on all architectures
Affected versions < 1.0.1f
Unaffected versions >= 1.0.1f, < 1.0.1

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.

Description

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

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.

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

Release Date
February 21, 2014

Latest Revision
February 21, 2014: 1

Severity
normal

Exploitable
remote

Bugzilla entries