Test ID:	1.3.6.1.4.1.25623.1.0.871500
Category:	Red Hat Local Security Checks
Title:	RedHat Update for libssh2 RHSA-2015:2140-07
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 SSH2 protocol. A flaw was found in the way the kex_agree_methods() function of libssh2 performed a key exchange when negotiating a new SSH session. A man-in-the-middle attacker could use a crafted SSH_MSG_KEXINIT packet to crash a connecting libssh2 client. (CVE-2015-1782) This update also fixes the following bugs: * Previously, libssh2 did not correctly adjust the size of the receive window while reading from an SSH channel. This caused downloads over the secure copy (SCP) protocol to consume an excessive amount of memory. A series of upstream patches has been applied on the libssh2 source code to improve handling of the receive window size. Now, SCP downloads work as expected. (BZ#1080459) * Prior to this update, libssh2 did not properly initialize an internal variable holding the SSH agent file descriptor, which caused the agent destructor to close the standard input file descriptor by mistake. An upstream patch has been applied on libssh2 sources to properly initialize the internal variable. Now, libssh2 closes only the file descriptors it owns. (BZ#1147717) All libssh2 users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. 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 Server (v. 7) Solution: Please Install the Updated Packages. CVSS Score: 6.8 CVSS Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2015-1782 73061 http://www.securityfocus.com/bid/73061 DSA-3182 http://www.debian.org/security/2015/dsa-3182 FEDORA-2015-3757 http://lists.fedoraproject.org/pipermail/package-announce/2015-March/151943.html FEDORA-2015-3791 http://lists.fedoraproject.org/pipermail/package-announce/2015-March/153933.html FEDORA-2015-3797 http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152362.html MDVSA-2015:148 http://www.mandriva.com/security/advisories?name=MDVSA-2015:148 http://www.libssh2.org/adv_20150311.html http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
Copyright	Copyright (C) 2015 Greenbone AG

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