OpenSSL: Denial of service

OpenSSL: Denial of service Two vulnerabilities might allow for a Denial of Service of daemons using OpenSSL. openssl 2008-06-23 2008-06-23 223429 remote 0.9.8g-r2 0.9.8f 0.9.8g-r2

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.

Ossi Herrala and Jukka Taimisto of Codenomicon discovered two vulnerabilities:

A double free() call in the TLS server name extension (CVE-2008-0891).
The OpenSSL client code does not properly handle servers that omit the Server Key Exchange message in the TLS handshake (CVE-2008-1672).

A remote attacker could connect to a vulnerable server, or entice a daemon to connect to a malicious server, causing a Denial of Service of the daemon in both cases.

There is no known workaround at this time.

All OpenSSL users should upgrade to the latest version:


    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-libs/openssl-0.9.8g-r2"

CVE-2008-0891 CVE-2008-1672 rbu rbu rbu