CVE-2018-16221

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).

Category

8.0
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.73% Top 30%
Third-Party Advisory fraunhofer.de Third-Party Advisory fraunhofer.de
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.sit.fraunhofer.de/de/securitytestlab/ third party advisory
https://www.sit.fraunhofer.de/fileadmin/dokumente/CVE/Advisory_Yealink_Ultra-elegantIPPhone_SIPT41P.pdf?_=1549375271 third party advisory

Frequently Asked Questions

What is the severity of CVE-2018-16221?
CVE-2018-16221 has been scored as a high severity vulnerability.
How to fix CVE-2018-16221?
To fix CVE-2018-16221, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-16221 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-16221 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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