CVE-2015-7751 Auth bypass in n/a

Medium 6.9 Published 19 Oct 2015 Updated 6 Aug 2024

Local attackers can gain root privileges on Juniper Junos OS devices by exploiting a corrupted pam.conf file that bypasses root password requirements.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2015-7751?

CVE-2015-7751 is a medium-severity authentication bypass vulnerability in Juniper Junos, published on 19 Oct 2015. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Juniper Junos OS before 12.1X44-D50, 12.1X46 before 12.1X46-D35, 12.1X47 before 12.1X47-D25, 12.3 before 12.3R9, 12.3X48 before 12.3X48-D15, 13.2 before 13.2R7, 13.2X51 before 13.2X51-D35, 13.3 before 13.3R6, 14.1 before 14.1R5, 14.1X50 before 14.1X50-D105, 14.1X51 before 14.1X51-D70, 14.1X53 before 14.1X53-D25, 14.1X55 before 14.1X55-D20, 14.2 before 14.2R1, 15.1 before 15.1F2 or 15.1R1, and 15.1X49 before 15.1X49-D10 does not require a password for the root user when pam.conf is "corrupted," which allows local users to gain root privileges by modifying the file.

Weakness: CWE-264

Which versions are affected by CVE-2015-7751?

It affects 1 product.

Products include Juniper Junos.

How do I fix CVE-2015-7751?

No fix has been published for CVE-2015-7751 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2015-7751 being exploited?

There is no known exploitation of CVE-2015-7751 in the wild and no public exploit code.

All Juniper Junos vulnerabilities

Sources

Also known as GHSA-j3m7-mwx3-4r7v.