ID de Prueba:	1.3.6.1.4.1.25623.1.0.871506
Categoría:	Red Hat Local Security Checks
Título:	RedHat Update for openssh RHSA-2015:2088-06
Resumen:	The remote host is missing an update for the 'openssh'; package(s) announced via the referenced advisory.
Descripción:	Summary: The remote host is missing an update for the 'openssh' package(s) announced via the referenced advisory. Vulnerability Insight: OpenSSH is OpenBSD's SSH (Secure Shell) protocol implementation. These packages include the core files necessary for both the OpenSSH client and server. A flaw was found in the way OpenSSH handled PAM authentication when using privilege separation. An attacker with valid credentials on the system and able to fully compromise a non-privileged pre-authentication process using a different flaw could use this flaw to authenticate as other users. (CVE-2015-6563) A use-after-free flaw was found in OpenSSH. An attacker able to fully compromise a non-privileged pre-authentication process using a different flaw could possibly cause sshd to crash or execute arbitrary code with root privileges. (CVE-2015-6564) It was discovered that the OpenSSH sshd daemon did not check the list of keyboard-interactive authentication methods for duplicates. A remote attacker could use this flaw to bypass the MaxAuthTries limit, making it easier to perform password guessing attacks. (CVE-2015-5600) It was found that the OpenSSH ssh-agent, a program to hold private keys used for public key authentication, was vulnerable to password guessing attacks. An attacker able to connect to the agent could use this flaw to conduct a brute-force attack to unlock keys in the ssh-agent. (BZ#1238238) This update fixes the following bugs: * Previously, the sshd_config(5) man page was misleading and could thus confuse the user. This update improves the man page text to clearly describe the AllowGroups feature. (BZ#1150007) * The limit for the function for restricting the number of files listed using the wildcard character (*) that prevents the Denial of Service (DoS) for both server and client was previously set too low. Consequently, the user reaching the limit was prevented from listing a directory with a large number of files over Secure File Transfer Protocol (SFTP). This update increases the aforementioned limit, thus fixing this bug. (BZ#1160377) * When the ForceCommand option with a pseudoterminal was used and the MaxSession option was set to '2', multiplexed SSH connections did not work as expected. After the user attempted to open a second multiplexed connection, the attempt failed if the first connection was still open. This update modifies OpenSSH to issue only one audit message per session, and the user is thus able to open two multiplexed connections in this situation. (BZ#1199112) * The ssh-copy-id utility failed if the account on the remote server did not use an sh-like shell. Remote commands have been modified to run in an sh-like shell, and ssh-copy-id now works also with non-sh-like she ... Description truncated, please see the referenced URL(s) for more information. Affected Software/OS: openssh on Red Hat Enterprise Linux Server (v. 7) Solution: Please Install the Updated Packages. CVSS Score: 8.5 CVSS Vector: AV:N/AC:L/Au:N/C:P/I:N/A:C
Referencia Cruzada:	Common Vulnerability Exposure (CVE) ID: CVE-2015-5600 http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html BugTraq ID: 75990 http://www.securityfocus.com/bid/75990 BugTraq ID: 91787 http://www.securityfocus.com/bid/91787 BugTraq ID: 92012 http://www.securityfocus.com/bid/92012 http://lists.fedoraproject.org/pipermail/package-announce/2015-July/162955.html http://lists.fedoraproject.org/pipermail/package-announce/2015-August/165170.html http://seclists.org/fulldisclosure/2015/Jul/92 https://security.gentoo.org/glsa/201512-04 https://www.arista.com/en/support/advisories-notices/security-advisories/1174-security-advisory-12 https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html http://openwall.com/lists/oss-security/2015/07/23/4 RedHat Security Advisories: RHSA-2016:0466 http://rhn.redhat.com/errata/RHSA-2016-0466.html http://www.securitytracker.com/id/1032988 SuSE Security Announcement: SUSE-SU-2015:1581 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00017.html http://www.ubuntu.com/usn/USN-2710-1 http://www.ubuntu.com/usn/USN-2710-2 Common Vulnerability Exposure (CVE) ID: CVE-2015-6563 http://lists.apple.com/archives/security-announce/2015/Oct/msg00005.html BugTraq ID: 76317 http://www.securityfocus.com/bid/76317 http://seclists.org/fulldisclosure/2015/Aug/54 http://www.openwall.com/lists/oss-security/2015/08/22/1 RedHat Security Advisories: RHSA-2016:0741 http://rhn.redhat.com/errata/RHSA-2016-0741.html Common Vulnerability Exposure (CVE) ID: CVE-2015-6564
Copyright	Copyright (C) 2015 Greenbone AG

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