-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

- -------------------------------------------------------------------------
Debian Security Advisory DSA-2763-1                   security@debian.org
http://www.debian.org/security/                      Salvatore Bonaccorso
September 24, 2013                     http://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package        : pyopenssl
Vulnerability  : hostname check bypassing
Problem type   : remote
Debian-specific: no
CVE ID         : CVE-2013-4314
Debian Bug     : 722055

It was discovered that PyOpenSSL, a Python wrapper around the OpenSSL
library, does not properly handle certificates with NULL characters in
the Subject Alternative Name field.

A remote attacker in the position to obtain a certificate for
'www.foo.org\0.example.com' from a CA that a SSL client trusts, could
use this to spoof 'www.foo.org' and conduct man-in-the-middle attacks
between the PyOpenSSL-using client and the SSL server.

For the oldstable distribution (squeeze), this problem has been fixed in
version 0.10-1+squeeze1.

For the stable distribution (wheezy), this problem has been fixed in
version 0.13-2+deb7u1.

For the unstable distribution (sid), this problem has been fixed in
version 0.13-2.1.

We recommend that you upgrade your pyopenssl 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
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.14 (GNU/Linux)
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=fCjj
-----END PGP SIGNATURE-----


-- 
To UNSUBSCRIBE, email to debian-security-announce-REQUEST@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact
 listmaster@lists.debian.org
Archive: http://lists.debian.org/E1VOVsY-0002fs-8w@master.debian.org