CVE-2015-8325 Privilege escalation in n/a

High 7.8 Published Updated

Local attackers can gain privileges via environment manipulation in OpenSSH when UseLogin and PAM are configured, requiring a patch.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Local or same network only
Victim action needed
Not needed
Fix
Available

What is CVE-2015-8325?

CVE-2015-8325 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 1 May 2016. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The do_setup_env function in session.c in sshd in OpenSSH through 7.2p2, when the UseLogin feature is enabled and PAM is configured to read .pam_environment files in user home directories, allows local users to gain privileges by triggering a crafted environment for the /bin/login program, as demonstrated by an LD_PRELOAD environment variable.

Weakness: CWE-264, CWE-1262

Which versions are affected by CVE-2015-8325?

It affects 5 products.

Linux distribution packages (40)
openssh Red Hat:enterprise_linux:6::clientAll versions0:5.3p1-122.el6
openssh-askpass Red Hat:enterprise_linux:6::clientAll versions0:5.3p1-122.el6
openssh-clients Red Hat:enterprise_linux:6::clientAll versions0:5.3p1-122.el6
openssh-debuginfo Red Hat:enterprise_linux:6::clientAll versions0:5.3p1-122.el6
openssh-ldap Red Hat:enterprise_linux:6::clientAll versions0:5.3p1-122.el6
openssh-server Red Hat:enterprise_linux:6::clientAll versions0:5.3p1-122.el6
pam_ssh_agent_auth Red Hat:enterprise_linux:6::clientAll versions0:0.9.3-122.el6
openssh Red Hat:enterprise_linux:6::computenodeAll versions0:5.3p1-122.el6
openssh-askpass Red Hat:enterprise_linux:6::computenodeAll versions0:5.3p1-122.el6
openssh-clients Red Hat:enterprise_linux:6::computenodeAll versions0:5.3p1-122.el6
openssh-debuginfo Red Hat:enterprise_linux:6::computenodeAll versions0:5.3p1-122.el6
openssh-ldap Red Hat:enterprise_linux:6::computenodeAll versions0:5.3p1-122.el6
openssh-server Red Hat:enterprise_linux:6::computenodeAll versions0:5.3p1-122.el6
pam_ssh_agent_auth Red Hat:enterprise_linux:6::computenodeAll versions0:0.9.3-122.el6
openssh Red Hat:enterprise_linux:6::serverAll versions0:5.3p1-122.el6
openssh-askpass Red Hat:enterprise_linux:6::serverAll versions0:5.3p1-122.el6
openssh-clients Red Hat:enterprise_linux:6::serverAll versions0:5.3p1-122.el6
openssh-debuginfo Red Hat:enterprise_linux:6::serverAll versions0:5.3p1-122.el6
openssh-ldap Red Hat:enterprise_linux:6::serverAll versions0:5.3p1-122.el6
openssh-server Red Hat:enterprise_linux:6::serverAll versions0:5.3p1-122.el6
pam_ssh_agent_auth Red Hat:enterprise_linux:6::serverAll versions0:0.9.3-122.el6
openssh Red Hat:enterprise_linux:6::workstationAll versions0:5.3p1-122.el6
openssh-askpass Red Hat:enterprise_linux:6::workstationAll versions0:5.3p1-122.el6
openssh-clients Red Hat:enterprise_linux:6::workstationAll versions0:5.3p1-122.el6
openssh-debuginfo Red Hat:enterprise_linux:6::workstationAll versions0:5.3p1-122.el6
openssh-ldap Red Hat:enterprise_linux:6::workstationAll versions0:5.3p1-122.el6
openssh-server Red Hat:enterprise_linux:6::workstationAll versions0:5.3p1-122.el6
pam_ssh_agent_auth Red Hat:enterprise_linux:6::workstationAll versions0:0.9.3-122.el6
openssh Red Hat:enterprise_linux:7::clientAll versions0:6.6.1p1-31.el7
openssh-askpass Red Hat:enterprise_linux:7::clientAll versions0:6.6.1p1-31.el7
openssh-clients Red Hat:enterprise_linux:7::clientAll versions0:6.6.1p1-31.el7
openssh-debuginfo Red Hat:enterprise_linux:7::clientAll versions0:6.6.1p1-31.el7
openssh-keycat Red Hat:enterprise_linux:7::clientAll versions0:6.6.1p1-31.el7
openssh-ldap Red Hat:enterprise_linux:7::clientAll versions0:6.6.1p1-31.el7
openssh-server Red Hat:enterprise_linux:7::clientAll versions0:6.6.1p1-31.el7
openssh-server-sysvinit Red Hat:enterprise_linux:7::clientAll versions0:6.6.1p1-31.el7
pam_ssh_agent_auth Red Hat:enterprise_linux:7::clientAll versions0:0.9.3-9.31.el7
openssh Red Hat:enterprise_linux:7::computenodeAll versions0:6.6.1p1-31.el7
openssh-askpass Red Hat:enterprise_linux:7::computenodeAll versions0:6.6.1p1-31.el7
openssh-clients Red Hat:enterprise_linux:7::computenodeAll versions0:6.6.1p1-31.el7

Products include Canonical Ubuntu Core, Canonical Ubuntu Linux, Canonical Ubuntu Touch, Debian Debian Linux, OpenSSH.

How do I fix CVE-2015-8325?

Apply the vendor's patch.

Is CVE-2015-8325 being exploited?

There is no known exploitation of CVE-2015-8325 in the wild and no public exploit code.

All Canonical Ubuntu Linux vulnerabilities

Sources

Also known as ALPINE-CVE-2015-8325, DEBIAN-CVE-2015-8325, DSA-3550-1, GHSA-729x-x825-x8jf, RHSA-2016:2588, RHSA-2017:0641 and 1 more.

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