CVE-2018-0300 Path traversal in Cisco Firepower 4100 Series Next-Generation Firewall and Firepower 9300 Security Appliance unknown
Authenticated attackers can exploit path traversal in image uploads to execute arbitrary code with root privileges on Cisco Firepower devices.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-0300?
CVE-2018-0300 is a high-severity path traversal vulnerability in Cisco Firepower 4100 Series Next-Generation Firewall and Firepower 9300 Security Appliance unknown, published on 21 Jun 2018. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A vulnerability in the process of uploading new application images to Cisco FXOS on the Cisco Firepower 4100 Series Next-Generation Firewall (NGFW) and Firepower 9300 Security Appliance could allow an authenticated, remote attacker using path traversal techniques to create or overwrite arbitrary files on an affected device. The vulnerability is due to insufficient validation during the application image upload process. An attacker could exploit this vulnerability by creating an application image containing malicious code and installing the image on the affected device using the CLI or web-based user interface (web UI). These actions occur prior to signature verification and could allow the attacker to create and execute arbitrary code with root privileges. Note: A missing or invalid signature in the application image will cause the upload process to fail, but does not prevent the exploit. Cisco Bug IDs: CSCvc21901.
Weakness: CWE-22
Which versions are affected by CVE-2018-0300?
It affects 1 product.
Products include Cisco Fxos.
How do I fix CVE-2018-0300?
No fix has been published for CVE-2018-0300 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-2018-0300 being exploited?
There is no known exploitation of CVE-2018-0300 in the wild and no public exploit code.
Other vulnerabilities in Cisco Firepower 4100 Series Next-Generation Firewall and Firepower 9300 Security Appliance unknown
Sources
Also known as GHSA-ch88-fg86-h47v.