CVE-2018-16221 Path traversal in n/a
An authenticated remote attacker can read privileged files like /etc/passwd via path traversal in the diagnostics web interface of the IP phone.
- 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-2018-16221?
CVE-2018-16221 is a high-severity path traversal vulnerability in n/a, published on 29 May 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The diagnostics web interface in the Yeahlink Ultra-elegant IP Phone SIP-T41P (firmware 66.83.0.35) does not validate (escape) the path information (path traversal), which allows an authenticated remote attacker to get access to privileged information (e.g., /etc/passwd) via path traversal (relative path information in the file parameter of the corresponding POST request).
Weakness: CWE-22
Which versions are affected by CVE-2018-16221?
It affects 1 product.
Products include Yealink Ultra-Elegant Ip Phone Sip-T41p Firmware.
How do I fix CVE-2018-16221?
No fix has been published for CVE-2018-16221 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-2018-16221 being exploited?
There is no known exploitation of CVE-2018-16221 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-qpg6-9qg9-qpwr.