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Red Hat: RHSA-2016-2588-02 Moderate: OpenSSH Privilege Escalation Threat

Redhat Large Esm H500
An update for openssh is now available for Red Hat Enterprise Linux 7. 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
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====================================================================                   Red Hat Security Advisory

Synopsis:          Moderate: openssh security, bug fix, and enhancement update
Advisory ID:       RHSA-2016:2588-02
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2016:2588.html
Issue date:        2016-11-03
CVE Names:         CVE-2015-8325 
====================================================================
1. Summary:

An update for openssh is now available for Red Hat Enterprise Linux 7.

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 Client (v. 7) - x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64
Red Hat Enterprise Linux Server (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - 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 discovered that the OpenSSH sshd daemon fetched PAM environment
settings before running the login program. In configurations with
UseLogin=yes and the pam_env PAM module configured to read user environment
settings, a local user could use this flaw to execute arbitrary code as
root. (CVE-2015-8325)

Additional Changes:

For detailed information on changes in this release, see the Red Hat
Enterprise Linux 7.3 Release 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/):

1237129 - sshd -T does not output authenticationmethods with default value
1291172 - systemctl restart/start sshd shows no error if start fails
1310303 - remove GLOB_LIMIT_STAT from OpenSSH
1312013 - rhpkg prep  fails on rhel-7.3 branch
1328012 - CVE-2015-8325 openssh: privilege escalation via user's PAM environment and UseLogin=yes
1328243 - OpenSSH only looks for .k5login in user directory
1344614 - sftp -m modifies umask and breaks permissions on new directories
1349556 - ssh-copy-id not working when custom loglevel is quiet
1357859 - guest_t can run sudo
1373297 - openssh can't be installed without selinux-policy

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
openssh-6.6.1p1-31.el7.src.rpm

x86_64:
openssh-6.6.1p1-31.el7.x86_64.rpm
openssh-askpass-6.6.1p1-31.el7.x86_64.rpm
openssh-clients-6.6.1p1-31.el7.x86_64.rpm
openssh-debuginfo-6.6.1p1-31.el7.x86_64.rpm
openssh-keycat-6.6.1p1-31.el7.x86_64.rpm
openssh-server-6.6.1p1-31.el7.x86_64.rpm

Red Hat Enterprise Linux Client Optional (v. 7):

x86_64:
openssh-debuginfo-6.6.1p1-31.el7.i686.rpm
openssh-debuginfo-6.6.1p1-31.el7.x86_64.rpm
openssh-ldap-6.6.1p1-31.el7.x86_64.rpm
openssh-server-sysvinit-6.6.1p1-31.el7.x86_64.rpm
pam_ssh_agent_auth-0.9.3-9.31.el7.i686.rpm
pam_ssh_agent_auth-0.9.3-9.31.el7.x86_64.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
openssh-6.6.1p1-31.el7.src.rpm

x86_64:
openssh-6.6.1p1-31.el7.x86_64.rpm
openssh-clients-6.6.1p1-31.el7.x86_64.rpm
openssh-debuginfo-6.6.1p1-31.el7.x86_64.rpm
openssh-keycat-6.6.1p1-31.el7.x86_64.rpm
openssh-server-6.6.1p1-31.el7.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

x86_64:
openssh-askpass-6.6.1p1-31.el7.x86_64.rpm
openssh-debuginfo-6.6.1p1-31.el7.i686.rpm
openssh-debuginfo-6.6.1p1-31.el7.x86_64.rpm
openssh-ldap-6.6.1p1-31.el7.x86_64.rpm
openssh-server-sysvinit-6.6.1p1-31.el7.x86_64.rpm
pam_ssh_agent_auth-0.9.3-9.31.el7.i686.rpm
pam_ssh_agent_auth-0.9.3-9.31.el7.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
openssh-6.6.1p1-31.el7.src.rpm

aarch64:
openssh-6.6.1p1-31.el7.aarch64.rpm
openssh-askpass-6.6.1p1-31.el7.aarch64.rpm
openssh-clients-6.6.1p1-31.el7.aarch64.rpm
openssh-debuginfo-6.6.1p1-31.el7.aarch64.rpm
openssh-keycat-6.6.1p1-31.el7.aarch64.rpm
openssh-server-6.6.1p1-31.el7.aarch64.rpm

ppc64:
openssh-6.6.1p1-31.el7.ppc64.rpm
openssh-askpass-6.6.1p1-31.el7.ppc64.rpm
openssh-clients-6.6.1p1-31.el7.ppc64.rpm
openssh-debuginfo-6.6.1p1-31.el7.ppc64.rpm
openssh-keycat-6.6.1p1-31.el7.ppc64.rpm
openssh-server-6.6.1p1-31.el7.ppc64.rpm

ppc64le:
openssh-6.6.1p1-31.el7.ppc64le.rpm
openssh-askpass-6.6.1p1-31.el7.ppc64le.rpm
openssh-clients-6.6.1p1-31.el7.ppc64le.rpm
openssh-debuginfo-6.6.1p1-31.el7.ppc64le.rpm
openssh-keycat-6.6.1p1-31.el7.ppc64le.rpm
openssh-server-6.6.1p1-31.el7.ppc64le.rpm

s390x:
openssh-6.6.1p1-31.el7.s390x.rpm
openssh-askpass-6.6.1p1-31.el7.s390x.rpm
openssh-clients-6.6.1p1-31.el7.s390x.rpm
openssh-debuginfo-6.6.1p1-31.el7.s390x.rpm
openssh-keycat-6.6.1p1-31.el7.s390x.rpm
openssh-server-6.6.1p1-31.el7.s390x.rpm

x86_64:
openssh-6.6.1p1-31.el7.x86_64.rpm
openssh-askpass-6.6.1p1-31.el7.x86_64.rpm
openssh-clients-6.6.1p1-31.el7.x86_64.rpm
openssh-debuginfo-6.6.1p1-31.el7.x86_64.rpm
openssh-keycat-6.6.1p1-31.el7.x86_64.rpm
openssh-server-6.6.1p1-31.el7.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

aarch64:
openssh-debuginfo-6.6.1p1-31.el7.aarch64.rpm
openssh-ldap-6.6.1p1-31.el7.aarch64.rpm
openssh-server-sysvinit-6.6.1p1-31.el7.aarch64.rpm
pam_ssh_agent_auth-0.9.3-9.31.el7.aarch64.rpm

ppc64:
openssh-debuginfo-6.6.1p1-31.el7.ppc.rpm
openssh-debuginfo-6.6.1p1-31.el7.ppc64.rpm
openssh-ldap-6.6.1p1-31.el7.ppc64.rpm
openssh-server-sysvinit-6.6.1p1-31.el7.ppc64.rpm
pam_ssh_agent_auth-0.9.3-9.31.el7.ppc.rpm
pam_ssh_agent_auth-0.9.3-9.31.el7.ppc64.rpm

ppc64le:
openssh-debuginfo-6.6.1p1-31.el7.ppc64le.rpm
openssh-ldap-6.6.1p1-31.el7.ppc64le.rpm
openssh-server-sysvinit-6.6.1p1-31.el7.ppc64le.rpm
pam_ssh_agent_auth-0.9.3-9.31.el7.ppc64le.rpm

s390x:
openssh-debuginfo-6.6.1p1-31.el7.s390.rpm
openssh-debuginfo-6.6.1p1-31.el7.s390x.rpm
openssh-ldap-6.6.1p1-31.el7.s390x.rpm
openssh-server-sysvinit-6.6.1p1-31.el7.s390x.rpm
pam_ssh_agent_auth-0.9.3-9.31.el7.s390.rpm
pam_ssh_agent_auth-0.9.3-9.31.el7.s390x.rpm

x86_64:
openssh-debuginfo-6.6.1p1-31.el7.i686.rpm
openssh-debuginfo-6.6.1p1-31.el7.x86_64.rpm
openssh-ldap-6.6.1p1-31.el7.x86_64.rpm
openssh-server-sysvinit-6.6.1p1-31.el7.x86_64.rpm
pam_ssh_agent_auth-0.9.3-9.31.el7.i686.rpm
pam_ssh_agent_auth-0.9.3-9.31.el7.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
openssh-6.6.1p1-31.el7.src.rpm

x86_64:
openssh-6.6.1p1-31.el7.x86_64.rpm
openssh-askpass-6.6.1p1-31.el7.x86_64.rpm
openssh-clients-6.6.1p1-31.el7.x86_64.rpm
openssh-debuginfo-6.6.1p1-31.el7.x86_64.rpm
openssh-keycat-6.6.1p1-31.el7.x86_64.rpm
openssh-server-6.6.1p1-31.el7.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 7):

x86_64:
openssh-debuginfo-6.6.1p1-31.el7.i686.rpm
openssh-debuginfo-6.6.1p1-31.el7.x86_64.rpm
openssh-ldap-6.6.1p1-31.el7.x86_64.rpm
openssh-server-sysvinit-6.6.1p1-31.el7.x86_64.rpm
pam_ssh_agent_auth-0.9.3-9.31.el7.i686.rpm
pam_ssh_agent_auth-0.9.3-9.31.el7.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key

7. References:

https://access.redhat.com/security/cve/CVE-2015-8325
https://access.redhat.com/security/updates/classification#moderate
https://docs.redhat.com/en/documentation/Red_Hat_Enterprise_Linux/7/html/7.3_Release_Notes/index.html

8. Contact:

The Red Hat security contact is . More contact
details at https://access.redhat.com/security/team/contact

Copyright 2016 Red Hat, Inc.
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Red Hat: RHSA-2016-2588-02 Moderate: OpenSSH Privilege Escalation Threat

red hat
Calendar Grey November 3, 2016
Dist Redhat Esm H88
Cautionary notice on OpenSSH vulnerability patches for Red Hat Enterprise Linux targeting possible elevation of privileges.
An update for openssh is now available for Red Hat Enterprise Linux 7

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.

Summary

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 discovered that the OpenSSH sshd daemon fetched PAM environment settings before running the login program. In configurations with UseLogin=yes and the pam_env PAM module configured to read user environment settings, a local user could use this flaw to execute arbitrary code as root. (CVE-2015-8325)
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.3 Release Notes linked from the References section.

References

https://access.redhat.com/security/cve/CVE-2015-8325 https://access.redhat.com/security/updates/classification#moderate https://docs.redhat.com/en/documentation/Red_Hat_Enterprise_Linux/7/html/7.3_Release_Notes/index.html

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: openssh-6.6.1p1-31.el7.src.rpm
x86_64: openssh-6.6.1p1-31.el7.x86_64.rpm openssh-askpass-6.6.1p1-31.el7.x86_64.rpm openssh-clients-6.6.1p1-31.el7.x86_64.rpm openssh-debuginfo-6.6.1p1-31.el7.x86_64.rpm openssh-keycat-6.6.1p1-31.el7.x86_64.rpm openssh-server-6.6.1p1-31.el7.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: openssh-debuginfo-6.6.1p1-31.el7.i686.rpm openssh-debuginfo-6.6.1p1-31.el7.x86_64.rpm openssh-ldap-6.6.1p1-31.el7.x86_64.rpm openssh-server-sysvinit-6.6.1p1-31.el7.x86_64.rpm pam_ssh_agent_auth-0.9.3-9.31.el7.i686.rpm pam_ssh_agent_auth-0.9.3-9.31.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: openssh-6.6.1p1-31.el7.src.rpm
x86_64: openssh-6.6.1p1-31.el7.x86_64.rpm openssh-clients-6.6.1p1-31.el7.x86_64.rpm openssh-debuginfo-6.6.1p1-31.el7.x86_64.rpm openssh-keycat-6.6.1p1-31.el7.x86_64.rpm openssh-server-6.6.1p1-31.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
x86_64: openssh-askpass-6.6.1p1-31.el7.x86_64.rpm openssh-debuginfo-6.6.1p1-31.el7.i686.rpm openssh-debuginfo-6.6.1p1-31.el7.x86_64.rpm openssh-ldap-6.6.1p1-31.el7.x86_64.rpm openssh-server-sysvinit-6.6.1p1-31.el7.x86_64.rpm pam_ssh_agent_auth-0.9.3-9.31.el7.i686.rpm

Read the Full Advisory


Advisory ID: RHSA-2016:2588-02
Product: Red Hat Enterprise Linux
Issue date: 2016-11-03

Topic

An update for openssh is now available for Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64

Red Hat Enterprise Linux Server (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

Bugs Fixed

1237129 - sshd -T does not output authenticationmethods with default value

1291172 - systemctl restart/start sshd shows no error if start fails

1310303 - remove GLOB_LIMIT_STAT from OpenSSH

1312013 - rhpkg prep fails on rhel-7.3 branch

1328012 - CVE-2015-8325 openssh: privilege escalation via user's PAM environment and UseLogin=yes

1328243 - OpenSSH only looks for .k5login in user directory

1344614 - sftp -m modifies umask and breaks permissions on new directories

1349556 - ssh-copy-id not working when custom loglevel is quiet

1357859 - guest_t can run sudo

1373297 - openssh can't be installed without selinux-policy

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