CVE-2017-3851 Path traversal in Cisco Application-Hosting Framework

High 7.5 Published 22 Mar 2017 Updated 5 Aug 2024

Unauthenticated remote attackers can read arbitrary files from the Cisco IOx application environment via crafted requests to the CAF 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-2017-3851?

CVE-2017-3851 is a high-severity path traversal vulnerability in Cisco Application-Hosting Framework, published on 22 Mar 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A Directory Traversal vulnerability in the web framework code of the Cisco application-hosting framework (CAF) component of the Cisco IOx application environment could allow an unauthenticated, remote attacker to read any file from the CAF in the virtual instance running on the affected device. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by submitting crafted requests to the CAF web interface. The impacts of a successful exploit are limited to the scope of the virtual instance and do not impact the router that is hosting Cisco IOx. Cisco IOx Releases 1.0.0.0 and 1.1.0.0 are vulnerable. Cisco Bug IDs: CSCuy52302.

Weakness: CWE-22

Which versions are affected by CVE-2017-3851?

It affects 1 product.

Products include Cisco Iox.

How do I fix CVE-2017-3851?

No fix has been published for CVE-2017-3851 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2017-3851 being exploited?

There is no known exploitation of CVE-2017-3851 in the wild and no public exploit code.

Sources

Also known as GHSA-rv9w-q754-5cw5.