CVE-2015-3238 Information disclosure in n/a

Medium 6.5 Published Updated

Local attackers can enumerate usernames or cause a denial of service in Linux-PAM when direct password access is unavailable.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2015-3238?

CVE-2015-3238 is a medium-severity vulnerability in n/a, published on 24 Aug 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The _unix_run_helper_binary function in the pam_unix module in Linux-PAM (aka pam) before 1.2.1, when unable to directly access passwords, allows local users to enumerate usernames or cause a denial of service (hang) via a large password.

Weakness: CWE-200

Which versions are affected by CVE-2015-3238?

It affects 2 products.

Linux distribution packages (33)
pam Red Hat:enterprise_linux:6::clientAll versions0:1.1.1-20.el6_7.1
pam-debuginfo Red Hat:enterprise_linux:6::clientAll versions0:1.1.1-20.el6_7.1
pam-devel Red Hat:enterprise_linux:6::clientAll versions0:1.1.1-20.el6_7.1
pam Red Hat:enterprise_linux:6::computenodeAll versions0:1.1.1-20.el6_7.1
pam-debuginfo Red Hat:enterprise_linux:6::computenodeAll versions0:1.1.1-20.el6_7.1
pam-devel Red Hat:enterprise_linux:6::computenodeAll versions0:1.1.1-20.el6_7.1
pam Red Hat:enterprise_linux:6::serverAll versions0:1.1.1-20.el6_7.1
pam-debuginfo Red Hat:enterprise_linux:6::serverAll versions0:1.1.1-20.el6_7.1
pam-devel Red Hat:enterprise_linux:6::serverAll versions0:1.1.1-20.el6_7.1
pam Red Hat:enterprise_linux:6::workstationAll versions0:1.1.1-20.el6_7.1
pam-debuginfo Red Hat:enterprise_linux:6::workstationAll versions0:1.1.1-20.el6_7.1
pam-devel Red Hat:enterprise_linux:6::workstationAll versions0:1.1.1-20.el6_7.1
pam Red Hat:enterprise_linux:7::clientAll versions0:1.1.8-12.el7_1.1
pam-debuginfo Red Hat:enterprise_linux:7::clientAll versions0:1.1.8-12.el7_1.1
pam-devel Red Hat:enterprise_linux:7::clientAll versions0:1.1.8-12.el7_1.1
pam Red Hat:enterprise_linux:7::computenodeAll versions0:1.1.8-12.el7_1.1
pam-debuginfo Red Hat:enterprise_linux:7::computenodeAll versions0:1.1.8-12.el7_1.1
pam-devel Red Hat:enterprise_linux:7::computenodeAll versions0:1.1.8-12.el7_1.1
pam Red Hat:enterprise_linux:7::serverAll versions0:1.1.8-12.ael7b_1.1
pam-debuginfo Red Hat:enterprise_linux:7::serverAll versions0:1.1.8-12.ael7b_1.1
pam-devel Red Hat:enterprise_linux:7::serverAll versions0:1.1.8-12.ael7b_1.1
pam Red Hat:enterprise_linux:7::workstationAll versions0:1.1.8-12.el7_1.1
pam-debuginfo Red Hat:enterprise_linux:7::workstationAll versions0:1.1.8-12.el7_1.1
pam-devel Red Hat:enterprise_linux:7::workstationAll versions0:1.1.8-12.el7_1.1
pam SUSE:Linux Enterprise Desktop 12 SP1All versions1.1.8-23.1
pam SUSE:Linux Enterprise Desktop 12 SP2All versions1.1.8-23.1
pam SUSE:Linux Enterprise Server 12 SP1All versions1.1.8-23.1
pam SUSE:Linux Enterprise Server 12 SP2All versions1.1.8-23.1
pam SUSE:Linux Enterprise Server for Raspberry Pi 12 SP2All versions1.1.8-23.1
pam SUSE:Linux Enterprise Server for SAP Applications 12 SP1All versions1.1.8-23.1
pam SUSE:Linux Enterprise Server for SAP Applications 12 SP2All versions1.1.8-23.1
pam SUSE:Linux Enterprise Software Development Kit 12 SP1All versions1.1.8-23.1
pam SUSE:Linux Enterprise Software Development Kit 12 SP2All versions1.1.8-23.1

Products include Linux-Pam Linux-Pam, Oracle Sparc-Opl Service Processor.

How do I fix CVE-2015-3238?

Upgrade to a fixed version.

Is CVE-2015-3238 being exploited?

There is no known exploitation of CVE-2015-3238 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2015-3238, GHSA-6r75-hhm5-f689, MGASA-2015-0266, RHSA-2015:1640, SUSE-SU-2017:1398-1, UBUNTU-CVE-2015-3238.

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