vulnwire
8.0high

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 inf…

Published 7 y ago · modified 4 mo ago · JSON

CVSS
8.0
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
1.5%
percentile 74%
Public exploits
0
none known

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).

Exploit prediction (EPSS)

1.47% probability of exploitation in the next 30 days, higher than 74% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.08.0CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD2.07.7AV:A/AC:L/Au:S/C:C/I:C/A:C

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

  • sit.fraunhofer.de /de/securitytestlab/ · x_refsource_MISC, x_transferred
  • sit.fraunhofer.de /fileadmin/dokumente/CVE/Advisory_Yealink_Ultra-elegantIPPhone_SIPT41P.pdf?_=1549375271 · x_refsource_MISC, x_transferred

Sources

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.