Debian DSA-2390-1: OpenSSL Vulnerabilities Exploited via Remote Attacks

Several vulnerabilities were discovered in OpenSSL, an implementation
of TLS and related protocols. The Common Vulnerabilities and
Exposures project identifies the following vulnerabilities:

CVE-2011-4108
The DTLS implementation performs a MAC check only if certain
padding is valid, which makes it easier for remote attackers to recover plaintext via a padding oracle attack.

CVE-2011-4109
A double free vulnerability when X509_V_FLAG_POLICY_CHECK is
enabled, allows remote attackers to cause applications crashes
and potentially allow execution of arbitrary code by
triggering failure of a policy check.

CVE-2011-4354
On 32-bit systems, the operations on NIST elliptic curves
P-256 and P-384 are not correctly implemented, potentially
leaking the private ECC key of a TLS server. (Regular
RSA-based keys are not affected by this vulnerability.)

CVE-2011-4576
The SSL 3.0 implementation does not properly initialize data
structures for block cipher padding, which might allow remote
attackers to obt...