Debian DSA-1935-1 Critical: gnutls Remote Attack Mitigation

Dan Kaminsky and Moxie Marlinspike discovered that gnutls, an implementation of
the TLS/SSL protocol, does not properly handle a '\0' character in a domain name
in the subject's Common Name or Subject Alternative Name (SAN) field of an X.509
certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL
servers via a crafted certificate issued by a legitimate Certification
Authority. (CVE-2009-2730)

In addition, with this update, certificates with MD2 hash signatures are no
longer accepted since they're no longer considered cryptograhically secure. It
only affects the oldstable distribution (etch).(CVE-2009-2409)

For the oldstable distribution (etch), these problems have been fixed in version
1.4.4-3+etch5 for gnutls13.

For the stable distribution (lenny), these problems have been fixed in version
2.4.2-6+lenny2 for gnutls26.

For the testing distribution (squeeze), and the unstable distribution (sid),
these problems have been fixed in version 2.8.3-1 for gnutls26.

We recommend that ...