Executive Summary
Summary | |
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Title | openssh security, bug fix, and enhancement update |
Informations | |||
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Name | RHSA-2016:0741 | First vendor Publication | 2016-05-10 |
Vendor | RedHat | Last vendor Modification | 2016-05-10 |
Severity (Vendor) | N/A | Revision | 01 |
Security-Database Scoring CVSS v3
Cvss vector : N/A | |||
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Overall CVSS Score | NA | ||
Base Score | NA | Environmental Score | NA |
impact SubScore | NA | Temporal Score | NA |
Exploitabality Sub Score | NA | ||
Calculate full CVSS 3.0 Vectors scores |
Security-Database Scoring CVSS v2
Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:P) | |||
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Cvss Base Score | 7.5 | Attack Range | Network |
Cvss Impact Score | 6.4 | Attack Complexity | Low |
Cvss Expoit Score | 10 | Authentication | None Required |
Calculate full CVSS 2.0 Vectors scores |
Detail
Problem Description: An update for openssh is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64 3. Description: OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server. Security Fix(es): * It was found that the OpenSSH client did not properly enforce the ForwardX11Timeout setting. A malicious or compromised remote X application could possibly use this flaw to establish a trusted connection to the local X server, even if only untrusted X11 forwarding was requested. (CVE-2015-5352) * 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) * An access flaw was discovered in OpenSSH; the OpenSSH client did not correctly handle failures to generate authentication cookies for untrusted X11 forwarding. A malicious or compromised remote X application could possibly use this flaw to establish a trusted connection to the local X server, even if only untrusted X11 forwarding was requested. (CVE-2016-1908) For detailed information on changes in this release, see the Red Hat Enterprise Linux 6.8 Release Notes and Red Hat Enterprise Linux 6.8 Technical Notes linked from the References section. 4. Solution: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing this update, the OpenSSH server daemon (sshd) will be restarted automatically. 5. Bugs fixed (https://bugzilla.redhat.com/): 1211673 - [RFE] Backport Match LocalAddress from OpenSSH 6.1 (and later) 1218070 - ECDSA host key not loaded by sshd by default (inconsistent with man page) 1219820 - Lack of clarity of Match block processing and RequiredAuthentications2 limitation 1238231 - CVE-2015-5352 openssh: XSECURITY restrictions bypass under certain conditions in ssh(1) 1252844 - CVE-2015-6563 openssh: Privilege separation weakness related to PAM support 1252852 - CVE-2015-6564 openssh: Use-after-free bug related to PAM support 1298741 - CVE-2016-1908 openssh: possible fallback from untrusted to trusted X11 forwarding |
Original Source
Url : https://rhn.redhat.com/errata/RHSA-2016-0741.html |
CWE : Common Weakness Enumeration
% | Id | Name |
---|---|---|
50 % | CWE-264 | Permissions, Privileges, and Access Controls |
25 % | CWE-287 | Improper Authentication |
25 % | CWE-20 | Improper Input Validation |
CPE : Common Platform Enumeration
Nessus® Vulnerability Scanner
Date | Description |
---|---|
2018-09-12 | Name : The remote Debian host is missing a security update. File : debian_DLA-1500.nasl - Type : ACT_GATHER_INFO |
2017-05-01 | Name : The remote EulerOS host is missing multiple security updates. File : EulerOS_SA-2016-1008.nasl - Type : ACT_GATHER_INFO |
2017-03-07 | Name : The remote device is missing a vendor-supplied security patch. File : f5_bigip_SOL17461.nasl - Type : ACT_GATHER_INFO |
2016-12-07 | Name : The remote Gentoo host is missing one or more security-related patches. File : gentoo_GLSA-201612-18.nasl - Type : ACT_GATHER_INFO |
2016-09-27 | Name : The remote SUSE host is missing one or more security updates. File : suse_SU-2016-2388-1.nasl - Type : ACT_GATHER_INFO |
2016-06-17 | Name : The remote SUSE host is missing one or more security updates. File : suse_SU-2016-1528-1.nasl - Type : ACT_GATHER_INFO |
2016-06-09 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20160510_openssh_on_SL6_x.nasl - Type : ACT_GATHER_INFO |
2016-06-02 | Name : The remote device is missing a vendor-supplied security patch. File : f5_bigip_SOL17263.nasl - Type : ACT_GATHER_INFO |
2016-06-01 | Name : The remote openSUSE host is missing a security update. File : openSUSE-2016-668.nasl - Type : ACT_GATHER_INFO |
2016-05-25 | Name : The remote SUSE host is missing one or more security updates. File : suse_SU-2016-1386-1.nasl - Type : ACT_GATHER_INFO |
2016-05-17 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2016-0741.nasl - Type : ACT_GATHER_INFO |
2016-05-16 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2016-0741.nasl - Type : ACT_GATHER_INFO |
2016-05-12 | Name : The remote Ubuntu host is missing a security-related patch. File : ubuntu_USN-2966-1.nasl - Type : ACT_GATHER_INFO |
2016-05-12 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2016-0741.nasl - Type : ACT_GATHER_INFO |
2016-05-06 | Name : The remote AIX host has a version of OpenSSH installed that is affected by mu... File : aix_openssh_advisory8.nasl - Type : ACT_GATHER_INFO |
2016-04-01 | Name : The remote Amazon Linux AMI host is missing a security update. File : ala_ALAS-2016-675.nasl - Type : ACT_GATHER_INFO |
2016-03-22 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20160321_openssh_on_SL7_x.nasl - Type : ACT_GATHER_INFO |
2016-03-22 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2016-0465.nasl - Type : ACT_GATHER_INFO |
2016-03-22 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2016-0465.nasl - Type : ACT_GATHER_INFO |
2016-03-22 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2016-0465.nasl - Type : ACT_GATHER_INFO |
2016-03-04 | Name : The remote Fedora host is missing a security update. File : fedora_2016-4509765b4b.nasl - Type : ACT_GATHER_INFO |
2015-12-02 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2015-2088.nasl - Type : ACT_GATHER_INFO |
2015-08-24 | Name : The remote FreeBSD host is missing a security-related update. File : freebsd_pkg_2920c449485011e5825fc80aa9043978.nasl - Type : ACT_GATHER_INFO |
Alert History
Date | Informations |
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2017-09-22 09:26:03 |
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2016-05-18 13:27:58 |
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2016-05-17 13:29:41 |
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2016-05-13 13:29:30 |
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2016-05-11 00:25:17 |
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