[RHSA-2017:0641-01] Moderate: openssh security and bug fix update

[news 28]

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Red Hat Security Advisory

 

Synopsis: Moderate: openssh security and bug fix update

Advisory ID: RHSA-2017:0641-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2017-0641.html

Issue date: 2017-03-21

CVE Names: CVE-2015-8325

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1. Summary:

 

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 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 6.9 Release Notes and Red Hat Enterprise Linux 6.9

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/):

 

1218424 - infinite loop, at 100% cpu in ssh if ^Z is pressed at password prompt

1327547 - ssh-copy-id fails with shells unaware of ~/

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

1341747 - sftp -m doesn't work as advertised

1353359 - 5.3p1-117.el6 breaks gss-group1-sha1- key exchange algorithm for GSSAPIKeyExchange authentication

1353410 - [ssh-copy-id] add "The agent has no identities." in remote ~/.ssh/authorized_keys

1373836 - Remove RC4 cipher and questionable MACs enabled by default from OpenSSH

1397547 - SSH does not use the ibmca crypto hardware

 

6. Package List:

 

Red Hat Enterprise Linux Desktop (v. 6):

 

Source:

openssh-5.3p1-122.el6.src.rpm

 

i386:

openssh-5.3p1-122.el6.i686.rpm

openssh-askpass-5.3p1-122.el6.i686.rpm

openssh-clients-5.3p1-122.el6.i686.rpm

openssh-debuginfo-5.3p1-122.el6.i686.rpm

openssh-server-5.3p1-122.el6.i686.rpm

 

x86_64:

openssh-5.3p1-122.el6.x86_64.rpm

openssh-askpass-5.3p1-122.el6.x86_64.rpm

openssh-clients-5.3p1-122.el6.x86_64.rpm

openssh-debuginfo-5.3p1-122.el6.x86_64.rpm

openssh-server-5.3p1-122.el6.x86_64.rpm

 

Red Hat Enterprise Linux Desktop Optional (v. 6):

 

i386:

openssh-debuginfo-5.3p1-122.el6.i686.rpm

openssh-ldap-5.3p1-122.el6.i686.rpm

pam_ssh_agent_auth-0.9.3-122.el6.i686.rpm

 

x86_64:

openssh-debuginfo-5.3p1-122.el6.i686.rpm

openssh-debuginfo-5.3p1-122.el6.x86_64.rpm

openssh-ldap-5.3p1-122.el6.x86_64.rpm

pam_ssh_agent_auth-0.9.3-122.el6.i686.rpm

pam_ssh_agent_auth-0.9.3-122.el6.x86_64.rpm

 

Red Hat Enterprise Linux HPC Node (v. 6):

 

Source:

openssh-5.3p1-122.el6.src.rpm

 

x86_64:

openssh-5.3p1-122.el6.x86_64.rpm

openssh-clients-5.3p1-122.el6.x86_64.rpm

openssh-debuginfo-5.3p1-122.el6.x86_64.rpm

openssh-server-5.3p1-122.el6.x86_64.rpm

 

Red Hat Enterprise Linux HPC Node Optional (v. 6):

 

x86_64:

openssh-askpass-5.3p1-122.el6.x86_64.rpm

openssh-debuginfo-5.3p1-122.el6.i686.rpm

openssh-debuginfo-5.3p1-122.el6.x86_64.rpm

openssh-ldap-5.3p1-122.el6.x86_64.rpm

pam_ssh_agent_auth-0.9.3-122.el6.i686.rpm

pam_ssh_agent_auth-0.9.3-122.el6.x86_64.rpm

 

Red Hat Enterprise Linux Server (v. 6):

 

Source:

openssh-5.3p1-122.el6.src.rpm

 

i386:

openssh-5.3p1-122.el6.i686.rpm

openssh-askpass-5.3p1-122.el6.i686.rpm

openssh-clients-5.3p1-122.el6.i686.rpm

openssh-debuginfo-5.3p1-122.el6.i686.rpm

openssh-server-5.3p1-122.el6.i686.rpm

 

ppc64:

openssh-5.3p1-122.el6.ppc64.rpm

openssh-askpass-5.3p1-122.el6.ppc64.rpm

openssh-clients-5.3p1-122.el6.ppc64.rpm

openssh-debuginfo-5.3p1-122.el6.ppc64.rpm

openssh-server-5.3p1-122.el6.ppc64.rpm

 

s390x:

openssh-5.3p1-122.el6.s390x.rpm

openssh-askpass-5.3p1-122.el6.s390x.rpm

openssh-clients-5.3p1-122.el6.s390x.rpm

openssh-debuginfo-5.3p1-122.el6.s390x.rpm

openssh-server-5.3p1-122.el6.s390x.rpm

 

x86_64:

openssh-5.3p1-122.el6.x86_64.rpm

openssh-askpass-5.3p1-122.el6.x86_64.rpm

openssh-clients-5.3p1-122.el6.x86_64.rpm

openssh-debuginfo-5.3p1-122.el6.x86_64.rpm

openssh-server-5.3p1-122.el6.x86_64.rpm

 

Red Hat Enterprise Linux Server Optional (v. 6):

 

i386:

openssh-debuginfo-5.3p1-122.el6.i686.rpm

openssh-ldap-5.3p1-122.el6.i686.rpm

pam_ssh_agent_auth-0.9.3-122.el6.i686.rpm

 

ppc64:

openssh-debuginfo-5.3p1-122.el6.ppc.rpm

openssh-debuginfo-5.3p1-122.el6.ppc64.rpm

openssh-ldap-5.3p1-122.el6.ppc64.rpm

pam_ssh_agent_auth-0.9.3-122.el6.ppc.rpm

pam_ssh_agent_auth-0.9.3-122.el6.ppc64.rpm

 

s390x:

openssh-debuginfo-5.3p1-122.el6.s390.rpm

openssh-debuginfo-5.3p1-122.el6.s390x.rpm

openssh-ldap-5.3p1-122.el6.s390x.rpm

pam_ssh_agent_auth-0.9.3-122.el6.s390.rpm

pam_ssh_agent_auth-0.9.3-122.el6.s390x.rpm

 

x86_64:

openssh-debuginfo-5.3p1-122.el6.i686.rpm

openssh-debuginfo-5.3p1-122.el6.x86_64.rpm

openssh-ldap-5.3p1-122.el6.x86_64.rpm

pam_ssh_agent_auth-0.9.3-122.el6.i686.rpm

pam_ssh_agent_auth-0.9.3-122.el6.x86_64.rpm

 

Red Hat Enterprise Linux Workstation (v. 6):

 

Source:

openssh-5.3p1-122.el6.src.rpm

 

i386:

openssh-5.3p1-122.el6.i686.rpm

openssh-askpass-5.3p1-122.el6.i686.rpm

openssh-clients-5.3p1-122.el6.i686.rpm

openssh-debuginfo-5.3p1-122.el6.i686.rpm

openssh-server-5.3p1-122.el6.i686.rpm

 

x86_64:

openssh-5.3p1-122.el6.x86_64.rpm

openssh-askpass-5.3p1-122.el6.x86_64.rpm

openssh-clients-5.3p1-122.el6.x86_64.rpm

openssh-debuginfo-5.3p1-122.el6.x86_64.rpm

openssh-server-5.3p1-122.el6.x86_64.rpm

 

Red Hat Enterprise Linux Workstation Optional (v. 6):

 

i386:

openssh-debuginfo-5.3p1-122.el6.i686.rpm

openssh-ldap-5.3p1-122.el6.i686.rpm

pam_ssh_agent_auth-0.9.3-122.el6.i686.rpm

 

x86_64:

openssh-debuginfo-5.3p1-122.el6.i686.rpm

openssh-debuginfo-5.3p1-122.el6.x86_64.rpm

openssh-ldap-5.3p1-122.el6.x86_64.rpm

pam_ssh_agent_auth-0.9.3-122.el6.i686.rpm

pam_ssh_agent_auth-0.9.3-122.el6.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://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/6.9_Release_Notes/index.html

https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/6.9_Technical_Notes/index.html

 

8. Contact:

 

The Red Hat security contact is . More contact

details at https://access.redhat.com/security/team/contact/

 

Copyright 2017 Red Hat, Inc.

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