CVE-2018-0001 Junos: Unauthenticated Remote Code Execution through J-Web interface

Critical 9.8 Published 10 Jan 2018 Updated 17 Sep 2024

Remote unauthenticated attackers can execute arbitrary code on Juniper Junos OS devices via a use-after-free vulnerability in the J-Web interface.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2018-0001?

CVE-2018-0001 is a critical use after free vulnerability in Juniper Junos, published on 10 Jan 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A remote, unauthenticated attacker may be able to execute code by exploiting a use-after-free defect found in older versions of PHP through injection of crafted data via specific PHP URLs within the context of the J-Web process. Affected releases are Juniper Networks Junos OS: 12.1X46 versions prior to 12.1X46-D67; 12.3 versions prior to 12.3R12-S5; 12.3X48 versions prior to 12.3X48-D35; 14.1 versions prior to 14.1R8-S5, 14.1R9; 14.1X53 versions prior to 14.1X53-D44, 14.1X53-D50; 14.2 versions prior to 14.2R7-S7, 14.2R8; 15.1 versions prior to 15.1R3; 15.1X49 versions prior to 15.1X49-D30; 15.1X53 versions prior to 15.1X53-D70.

Weakness: CWE-416

Which versions are affected by CVE-2018-0001?

It affects 1 product.

Products include Juniper Junos.

How do I fix CVE-2018-0001?

No fix has been published for CVE-2018-0001 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2018-0001 being exploited?

There is no known exploitation of CVE-2018-0001 in the wild and no public exploit code.

All Juniper Junos vulnerabilities

Sources

Also known as GHSA-5h5m-f4w8-fr6m.