Path Traversal in Yealink Ultra-Elegant Ip Phone Sip-T41p
CVE-2018-16221
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).
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.0 (High). Vector: CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.015 (72.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 72.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: -0.000
Affected products
- Yealink Ultra-Elegant Ip Phone Sip-T41p
- Yealink Ultra-Elegant Ip Phone Sip-T41p Firmware — versions 66.83.0.35
Weakness classification (CWE)
References
- www.sit.fraunhofer.de/de/securitytestlab/ (Third Party Advisory)
- www.sit.fraunhofer.de/fileadmin/dokumente/CVE/Advisory_Yealink_Ultra-elegantIPP… (Third Party Advisory)
Frequently asked questions
- What is CVE-2018-16221?
- CVE-2018-16221 is a high-severity vulnerability in Yealink Ultra-Elegant Ip Phone Sip-T41p, classified under Path Traversal. CVSS score: 8.0/10. Published 2019-05-29.
- How severe is CVE-2018-16221?
- High severity. CVSS v3 base score is 8.0 out of 10.