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Debian: Security update for OpenSSL

Multiple vulnerabilities have been found in OpenSSL. Ivan Nestlerode discovered a weakness in the CMS and PKCS #7 implementations that could allow an attacker to decrypt data via a Million Message Attack (MMA). It was discovered that a NULL pointer could be dereferenced when parsing certain S/MIME messages, leading to denial of service. Tavis Ormandy discovered a vulnerability in the way DER-encoded ASN.1 data is parsed that can result in a heap overflow.

Updated packages are available from security.debian.org.

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- -------------------------------------------------------------------------
Debian Security Advisory DSA-2454-1                   security@debian.org
http://www.debian.org/security/                          Raphael Geissert
April 19, 2012                         http://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package        : openssl
Vulnerability  : multiple
Problem type   : remote
Debian-specific: no
CVE ID         : CVE-2012-0884 CVE-2012-1165 CVE-2012-2110

Multiple vulnerabilities have been found in OpenSSL. The Common
Vulnerabilities and Exposures project identifies the following issues:

CVE-2012-0884

  Ivan Nestlerode discovered a weakness in the CMS and PKCS #7
  implementations that could allow an attacker to decrypt data
  via a Million Message Attack (MMA).

CVE-2012-1165

  It was discovered that a NULL pointer could be dereferenced
  when parsing certain S/MIME messages, leading to denial of
  service.

CVE-2012-2110

  Tavis Ormandy, Google Security Team, discovered a vulnerability
  in the way DER-encoded ASN.1 data is parsed that can result in
  a heap overflow.


Additionally, the fix for CVE-2011-4619 has been updated to address an
issue with SGC handshakes.

For the stable distribution (squeeze), these problems have been fixed in
version 0.9.8o-4squeeze11.

For the testing distribution (wheezy), these problems will be fixed soon.

For the unstable distribution (sid), these problems have been fixed in
version 1.0.1a-1.

We recommend that you upgrade your openssl packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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