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Mandriva Linux Security Advisory 2014-068

Mandriva Linux Security Advisory 2014-068
Posted Apr 9, 2014
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2014-068 - sshd in OpenSSH before 6.6 does not properly support wildcards on AcceptEnv lines in sshd_config, which allows remote attackers to bypass intended environment restrictions by using a substring located before a wildcard character. Matthew Vernon reported that if a SSH server offers a HostCertificate that the ssh client doesn't accept, then the client doesn't check the DNS for SSHFP records. As a consequence a malicious server can disable SSHFP-checking by presenting a certificate.

tags | advisory, remote
systems | linux, mandriva
advisories | CVE-2014-2532, CVE-2014-2653
SHA-256 | 0cf7a48470f92f54508eabbd4f9e1e0ae23f32cf46918fd1489cc6e856cf1a08

Mandriva Linux Security Advisory 2014-068

Change Mirror Download
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Hash: SHA1

_______________________________________________________________________

Mandriva Linux Security Advisory MDVSA-2014:068
http://www.mandriva.com/en/support/security/
_______________________________________________________________________

Package : openssh
Date : April 9, 2014
Affected: Business Server 1.0
_______________________________________________________________________

Problem Description:

Updated openssh packages fixes security vulnerabilities:

sshd in OpenSSH before 6.6 does not properly support wildcards
on AcceptEnv lines in sshd_config, which allows remote attackers to
bypass intended environment restrictions by using a substring located
before a wildcard character (CVE-2014-2532).

Matthew Vernon reported that if a SSH server offers a HostCertificate
that the ssh client doesn't accept, then the client doesn't check
the DNS for SSHFP records. As a consequence a malicious server can
disable SSHFP-checking by presenting a certificate (CVE-2014-2653).
_______________________________________________________________________

References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2532
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2653
http://advisories.mageia.org/MGASA-2014-0143.html
http://advisories.mageia.org/MGASA-2014-0166.html
_______________________________________________________________________

Updated Packages:

Mandriva Business Server 1/X86_64:
753bd40deb60429adc6a7c1afd63ee3d mbs1/x86_64/openssh-5.9p1-6.3.mbs1.x86_64.rpm
377e7fbb14f72a1e32da41f19be7baa8 mbs1/x86_64/openssh-askpass-5.9p1-6.3.mbs1.x86_64.rpm
a906db623fc8d56eab9b8b99b1af84d9 mbs1/x86_64/openssh-askpass-common-5.9p1-6.3.mbs1.x86_64.rpm
9fc03d4929efdf21a26aef308eb66f14 mbs1/x86_64/openssh-askpass-gnome-5.9p1-6.3.mbs1.x86_64.rpm
f2dbea4a0a8109bc835c69e871f07a69 mbs1/x86_64/openssh-clients-5.9p1-6.3.mbs1.x86_64.rpm
a20d329b8332ff7f7f10dd541a3865a9 mbs1/x86_64/openssh-server-5.9p1-6.3.mbs1.x86_64.rpm
0fd2c0a9338a7e8e8747c2ea3ae43c49 mbs1/SRPMS/openssh-5.9p1-6.3.mbs1.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/en/support/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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