Advisories » MGASA-2014-0119

Updated libssh package fixes security vulnerability

Publication date: 05 Mar 2014
Type: security
Affected Mageia releases : 3 , 4
CVE: CVE-2014-0017

Description

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

• https://bugs.mageia.org/show_bug.cgi?id=12942
• http://www.libssh.org/2014/03/04/libssh-0-6-3-security-release/
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2014-0017
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0017

SRPMS

3/core

• libssh-0.5.4-1.1.mga3

4/core

• libssh-0.5.5-2.1.mga4