openssh-krb5

Several remote vulnerabilities have been discovered in OpenSSH, a free
implementation of the Secure Shell protocol, which may lead to denial of
service and potentially the execution of arbitrary code. The Common
Vulnerabilities and Exposures project identifies the following problems:

• CVE-2006-4924
  Tavis Ormandy of the Google Security Team discovered a denial of
  service vulnerability in the mitigation code against complexity
  attacks, which might lead to increased CPU consumption until a
  timeout is triggered. This is only exploitable if support for
  SSH protocol version 1 is enabled.
• CVE-2006-5051
  Mark Dowd discovered that insecure signal handler usage could
  potentially lead to execution of arbitrary code through a double
  free. The Debian Security Team doesn’t believe the general openssh
  package without Kerberos support to be exploitable by this issue.
  However, due to the complexity of the underlying code we will
  issue an update to rule out all eventualities.

For the stable distribution (sarge) these problems have been fixed in
version 3.8.1p1-7sarge1.

For the unstable distribution (sid) these problems have been fixed in
version 4.3p2-4 of openssh. openssh-krb5 will soon be converted towards
a transitional package against openssh.

We recommend that you upgrade your openssh-krb5 packages.