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Mandriva Linux Security Advisory 2014-053

Mandriva Linux Security Advisory 2014-053
Posted Mar 13, 2014
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2014-053 - When using libssh before 0.6.3, a libssh-based server, when accepting a new connection, forks and the child process handles the request. The RAND_bytes() function of openssl doesn't reset its state after the fork, but simply adds the current process id to the PRNG state, which is not guaranteed to be unique. The most important consequence is that servers using EC or DSA certificates may under certain conditions leak their private key.

tags | advisory
systems | linux, mandriva
advisories | CVE-2014-0017
SHA-256 | e6dd6236b789502029d7c8ea18bc510ccd49917a0dfe6d3408d4f49046a1ed7f

Mandriva Linux Security Advisory 2014-053

Change Mirror Download
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Hash: SHA1

_______________________________________________________________________

Mandriva Linux Security Advisory MDVSA-2014:053
http://www.mandriva.com/en/support/security/
_______________________________________________________________________

Package : libssh
Date : March 13, 2014
Affected: Business Server 1.0
_______________________________________________________________________

Problem Description:

Updated libssh package fixes security vulnerability:

When using libssh before 0.6.3, a libssh-based server, when accepting
a new connection, forks and the child process handles the request. The
RAND_bytes() function of openssl doesn't reset its state after the
fork, but simply adds the current process id (getpid) to the PRNG
state, which is not guaranteed to be unique. The most important
consequence is that servers using EC (ECDSA) or DSA certificates may
under certain conditions leak their private key (CVE-2014-0017).
_______________________________________________________________________

References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0017
http://advisories.mageia.org/MGASA-2014-0119.html
_______________________________________________________________________

Updated Packages:

Mandriva Business Server 1/X86_64:
eb6bcbc277a01a3bcc53d43b127becbe mbs1/x86_64/lib64ssh4-0.5.2-2.2.mbs1.x86_64.rpm
417ce1525889e70932b44399293791b0 mbs1/x86_64/lib64ssh-devel-0.5.2-2.2.mbs1.x86_64.rpm
d4bbda02ed47d9b0df5f9e7992a29d6e mbs1/SRPMS/libssh-0.5.2-2.2.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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