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).

CVSS v3.0 8.0 HIGH
CVSS v2.0 7.7 HIGH

8.0^/10

CVSS v3.0 : HIGH

Vector : AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability : 2.1 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.7^/10

CVSS v2.0 : HIGH

Vector : AV:A/AC:L/Au:S/C:C/I:C/A:C

Exploitability : 5.1 / Impact : 10.0

Access Vector ADJACENT_NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://www.sit.fraunhofer.de/fileadmin/dokumente/CVE/Advisory_Yealink_Ultra-elegantIPPhone_SIPT41P.pdf?_=1549375271	Third Party Advisory
https://www.sit.fraunhofer.de/de/securitytestlab/	Third Party Advisory

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Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:yealink:ultra-elegant_ip_phone_sip-t41p_firmware:66.83.0.35:*:*:*:*:*:*:*

cpe:2.3:h:yealink:ultra-elegant_ip_phone_sip-t41p:-:*:*:*:*:*:*:*

Information

Published : 2019-05-29 11:29

Updated : 2019-05-30 07:25

NVD link : CVE-2018-16221

Mitre link : CVE-2018-16221

JSON object : View

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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Products Affected

yealink

ultra-elegant_ip_phone_sip-t41p
ultra-elegant_ip_phone_sip-t41p_firmware

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