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Mandriva Linux Security Advisory 2010-079

Mandriva Linux Security Advisory 2010-079
Posted Apr 19, 2010
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2010-079 - Irssi before 0.8.15, when SSL is used, does not verify that the server hostname matches a domain name in the subject's Common Name (CN) field or a Subject Alternative Name field of the X.509 certificate, which allows man-in-the-middle attackers to spoof IRC servers via an arbitrary certificate. core/nicklist.c in Irssi before 0.8.15 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via vectors related to an attempted fuzzy nick match at the instant that a victim leaves a channel. Additionally the updated packages disables the SSLv2 protocol and enables the SSLv3 and TLSv1 protocols for added security. The updated packages have been patched to correct these issues.

tags | advisory, remote, denial of service, arbitrary, spoof, protocol
systems | linux, mandriva
advisories | CVE-2010-1155, CVE-2010-1156
MD5 | 57505815ca1014aab993cdb658b35729

Mandriva Linux Security Advisory 2010-079

Change Mirror Download

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

_______________________________________________________________________

Mandriva Linux Security Advisory MDVSA-2010:079
http://www.mandriva.com/security/
_______________________________________________________________________

Package : irssi
Date : April 17, 2010
Affected: 2009.1, 2010.0
_______________________________________________________________________

Problem Description:

Multiple vulnerabilities has been found and corrected in irssi:

Irssi before 0.8.15, when SSL is used, does not verify that the server
hostname matches a domain name in the subject's Common Name (CN)
field or a Subject Alternative Name field of the X.509 certificate,
which allows man-in-the-middle attackers to spoof IRC servers via an
arbitrary certificate (CVE-2010-1155).

core/nicklist.c in Irssi before 0.8.15 allows remote attackers to cause
a denial of service (NULL pointer dereference and application crash)
via vectors related to an attempted fuzzy nick match at the instant
that a victim leaves a channel (CVE-2010-1156).

Additionally the updated packages disables the SSLv2 protocol and
enables the SSLv3 and TLSv1 protocols for added security.

The updated packages have been patched to correct these issues.
_______________________________________________________________________

References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-1155
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-1156
_______________________________________________________________________

Updated Packages:

Mandriva Linux 2009.1:
2802d8016fc0ddf509ff5f0b25ce49a9 2009.1/i586/irssi-0.8.12-4.2mdv2009.1.i586.rpm
57fe3c0dffa87057460512c440f9608e 2009.1/i586/irssi-devel-0.8.12-4.2mdv2009.1.i586.rpm
1413761bae45dbc553c4548a8f953bb2 2009.1/i586/irssi-perl-0.8.12-4.2mdv2009.1.i586.rpm
e8935ebfb35067eeacfa68f537e196cd 2009.1/SRPMS/irssi-0.8.12-4.2mdv2009.1.src.rpm

Mandriva Linux 2009.1/X86_64:
6e5a7cbf3c2d6bd4537b824d42686a19 2009.1/x86_64/irssi-0.8.12-4.2mdv2009.1.x86_64.rpm
27eaa99fc7f677cd9489f0db10ca4e65 2009.1/x86_64/irssi-devel-0.8.12-4.2mdv2009.1.x86_64.rpm
00f29761285d389e9eefc6c794d3393d 2009.1/x86_64/irssi-perl-0.8.12-4.2mdv2009.1.x86_64.rpm
e8935ebfb35067eeacfa68f537e196cd 2009.1/SRPMS/irssi-0.8.12-4.2mdv2009.1.src.rpm

Mandriva Linux 2010.0:
4cc7b233a0e60d38b38db43425fc5acf 2010.0/i586/irssi-0.8.14-2.1mdv2010.0.i586.rpm
8fe05e3c26ee673f87a41fa8051e4e0c 2010.0/i586/irssi-devel-0.8.14-2.1mdv2010.0.i586.rpm
b94e75d49d5c0cab2947bc14cad1a852 2010.0/i586/irssi-perl-0.8.14-2.1mdv2010.0.i586.rpm
9a46d9ad0e989801e4ac525c6474734e 2010.0/SRPMS/irssi-0.8.14-2.1mdv2010.0.src.rpm

Mandriva Linux 2010.0/X86_64:
93551e5dd93d8fc7cf78af2b96ce1bdd 2010.0/x86_64/irssi-0.8.14-2.1mdv2010.0.x86_64.rpm
5952f084cdd91d6d2cfdc2f69a0189ae 2010.0/x86_64/irssi-devel-0.8.14-2.1mdv2010.0.x86_64.rpm
2fa6ad593c670fa410699fdfd4552e1a 2010.0/x86_64/irssi-perl-0.8.14-2.1mdv2010.0.x86_64.rpm
9a46d9ad0e989801e4ac525c6474734e 2010.0/SRPMS/irssi-0.8.14-2.1mdv2010.0.src.rpm
_______________________________________________________________________

To upgrade automatically use MandrivaUpdate or urpmi. The verification
of md5 checksums and GPG signatures is performed automatically for you.

All packages are signed by Mandriva for security. You can obtain the
GPG public key of the Mandriva Security Team by executing:

gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98

You can view other update advisories for Mandriva Linux at:

http://www.mandriva.com/security/advisories

If you want to report vulnerabilities, please contact

security_(at)_mandriva.com
_______________________________________________________________________

Type Bits/KeyID Date User ID
pub 1024D/22458A98 2000-07-10 Mandriva Security Team
<security*mandriva.com>
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=wton
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