CVE-2018-16221

Severity Score

8.0

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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).

La interfaz web de diagnóstico en Yeahlink Ultra-elegant IP Phone SIP-T41P (firmware 66.83.0.35) no es validado (escape) el path de information (path traversal), que permite a un atacante remoto autenticado conseguir acceso a información privilegiada (por ejemplo,/etc/passwd) por medio de una salto de path (información relativa al path en el parámetro file de la petición POST correspondiente).

*Credits: N/A

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Adjacent

Attack Complexity

Low

Authentication

Single

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-08-30 CVE Reserved
2019-05-29 CVE Published
2024-08-05 CVE Updated
2024-12-17 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CAPEC

References (2)

URL	Tag	Source
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

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Yealink Search vendor "Yealink"	Ultra-elegant Ip Phone Sip-t41p Firmware Search vendor "Yealink" for product "Ultra-elegant Ip Phone Sip-t41p Firmware"	66.83.0.35 Search vendor "Yealink" for product "Ultra-elegant Ip Phone Sip-t41p Firmware" and version "66.83.0.35"	-	Affected	in	Yealink Search vendor "Yealink"	Ultra-elegant Ip Phone Sip-t41p Search vendor "Yealink" for product "Ultra-elegant Ip Phone Sip-t41p"	-	-	Safe