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Test ID:1.3.6.1.4.1.25623.1.0.871571
Category:Red Hat Local Security Checks
Title:RedHat Update for libssh2 RHSA-2016:0428-01
Summary:The remote host is missing an update for the 'libssh2'; package(s) announced via the referenced advisory.
Description:Summary:
The remote host is missing an update for the 'libssh2'
package(s) announced via the referenced advisory.

Vulnerability Insight:
The libssh2 packages provide a library that implements the SSHv2 protocol.

A type confusion issue was found in the way libssh2 generated ephemeral
secrets for the diffie-hellman-group1 and diffie-hellman-group14 key
exchange methods. This would cause an SSHv2 Diffie-Hellman handshake to use
significantly less secure random parameters. (CVE-2016-0787)

Red Hat would like to thank Aris Adamantiadis for reporting this issue.

All libssh2 users are advised to upgrade to these updated packages, which
contain a backported patch to correct this issue. After installing these
updated packages, all running applications using libssh2 must be restarted
for this update to take effect.

Affected Software/OS:
libssh2 on Red Hat Enterprise Linux Desktop (v. 6),
Red Hat Enterprise Linux Server (v. 6),
Red Hat Enterprise Linux Server (v. 7),
Red Hat Enterprise Linux Workstation (v. 6)

Solution:
Please Install the Updated Packages.

CVSS Score:
4.3

CVSS Vector:
AV:N/AC:M/Au:N/C:P/I:N/A:N

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2016-0787
BugTraq ID: 82514
http://www.securityfocus.com/bid/82514
Debian Security Information: DSA-3487 (Google Search)
http://www.debian.org/security/2016/dsa-3487
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177980.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178573.html
https://security.gentoo.org/glsa/201606-12
SuSE Security Announcement: openSUSE-SU-2016:0639 (Google Search)
http://lists.opensuse.org/opensuse-updates/2016-03/msg00008.html
CopyrightCopyright (C) 2016 Greenbone AG

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