#VU57185 Path traversal in TP-Link products - CVE-2015-3035

Vulnerability identifier: #VU57185

Vulnerability risk: Medium

CVSSv4.0: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:A/U:Green]

CVE-ID: CVE-2015-3035

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Archer C9
Hardware solutions / Routers & switches, VoIP, GSM, etc
Archer C5
Hardware solutions / Routers & switches, VoIP, GSM, etc
Archer C7
Hardware solutions / Routers & switches, VoIP, GSM, etc
Archer C8
Hardware solutions / Routers & switches, VoIP, GSM, etc
TL-WDR3500
Hardware solutions / Routers & switches, VoIP, GSM, etc
TL-WDR3600
Hardware solutions / Routers & switches, VoIP, GSM, etc
TL-WDR4300
Hardware solutions / Routers & switches, VoIP, GSM, etc
TL-WR740N
Hardware solutions / Routers & switches, VoIP, GSM, etc
TL-WR741ND
Hardware solutions / Routers & switches, VoIP, GSM, etc
TL-WR841ND
Hardware solutions / Routers & switches, VoIP, GSM, etc
TL-WR841N
Hardware solutions / Routers for home users

Vendor: TP-Link

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences. A remote attacker can send a specially crafted HTTP request and read arbitrary files via a .. (dot dot) in the PATH_INFO to login/.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Archer C9: 1.0

Archer C5: before 150317

Archer C7: before 150304

Archer C8: before 150316

TL-WDR3500: before 150302

TL-WDR3600: before 150302

TL-WDR4300: before 150302

TL-WR740N: before 150312

TL-WR741ND: before 150312

TL-WR841N: before 150310

TL-WR841ND: before 150310

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External links
https://packetstormsecurity.com/files/131378/TP-LINK-Local-File-Disclosure.html
https://seclists.org/fulldisclosure/2015/Apr/26
https://www.securityfocus.com/archive/1/535240/100/0/threaded
https://www.securityfocus.com/bid/74050
https://www.tp-link.com/en/download/Archer-C5_V1.20.html#Firmware
https://www.tp-link.com/en/download/Archer-C7_V2.html#Firmware
https://www.tp-link.com/en/download/Archer-C8_V1.html#Firmware
https://www.tp-link.com/en/download/Archer-C9_V1.html#Firmware
https://www.tp-link.com/en/download/TL-WDR3500_V1.html#Firmware
https://www.tp-link.com/en/download/TL-WDR3600_V1.html#Firmware
https://www.tp-link.com/en/download/TL-WDR4300_V1.html#Firmware
https://www.tp-link.com/en/download/TL-WR740N_V5.html#Firmware
https://www.tp-link.com/en/download/TL-WR741ND_V5.html#Firmware
https://www.tp-link.com/en/download/TL-WR841N_V9.html#Firmware
https://www.tp-link.com/en/download/TL-WR841ND_V9.html#Firmware
https://www.sec-consult.com/fxdata/seccons/prod/temedia/advisories_txt/20150410-0_TP-Link_Unauthenticated_local_file_disclosure_vulnerability_v10.txt

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.