-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - ------------------------------------------------------------------------- Debian Security Advisory DSA-2763-1 secur...@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-annou...@lists.debian.org -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (GNU/Linux) iQIcBAEBCgAGBQJSQcLoAAoJEHidbwV/2GP+BxUQAIVJbtpOvqPJlYxuBPdYSzRI 53N4nTbCZC9hTmDWCbmwH6yL1I2Iev7E6MHAuRZKJ2rRjrctF7r3cDNCPpCkLtNK 517MzzSPe7nmmhFHYNiDQIQeIb3bdKGiSGd5eTgvYzWtVFKqRQ8FHDkYYZjc5+y3 360CZAo3lRbkv5i2oKNPMvTQjXitQxAJjzTM4FKAsY5b1QHwsbtShaQHLza7QjUE AFWC5lW8aMFSK05IrBKs9vfEWsoiVkJjr/BjVEGR1KipI24eb4Yq3tOTlY6fWIyP vq6u5zSbg3N3hU1LFL3pg7ghH7dLovPCLxUycVfZjUy9tD8pRRj+rKbnqyok9ITk gKxhQORQXBw7f2cC9Yk7eFF4a0nNxUxYlfCNIEm+9Bvf3oRn37bfelJyiElGG/HM RpdjZRAsp81Sup+Rk0uEvDsLxb0Pl/4EfQNO7p2/pIXSqe5cDHy8NoIJPWEpJN9o hdKn3kaSuZPv4Z/KAMa2pyW8+bCkh4BwMZ/NloHkYZ9XodhFWFPGjd3vS+1PW3Mg +PKapJZNN563dosK+kqXrUaa2oU4fl4xxXPZPolETEuYxRV7+FKKwS2jlISTTpvF toFjeXUEUssjTcFOgYdg/tYODv1nLiOO1OyQkEhIGAJkvFWaVocgst1z9J8RxEMr YyEEGT5b+gT9Cvj1REjx =fCjj -----END PGP SIGNATURE-----
