CVE-2017-8841 Path traversal in n/a

High 8.1 Published 5 Jun 2017 Updated 5 Aug 2024

Attackers can delete arbitrary files on Peplink Balance routers via path traversal in the firmware upload CGI script.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2017-8841?

CVE-2017-8841 is a high-severity path traversal vulnerability in n/a, published on 5 Jun 2017. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Arbitrary file deletion exists on Peplink Balance 305, 380, 580, 710, 1350, and 2500 devices with firmware before fw-b305hw2_380hw6_580hw2_710hw3_1350hw2_2500-7.0.1-build2093. The attack methodology is absolute path traversal in cgi-bin/MANGA/firmware_process.cgi via the upfile.path parameter.

Weakness: CWE-22

Which versions are affected by CVE-2017-8841?

It affects 6 products.

Products include Peplink 1350hw2 Firmware, Peplink 2500 Firmware, Peplink 380hw6 Firmware, Peplink 580hw2 Firmware, Peplink 710hw3 Firmware, Peplink B305hw2 Firmware.

How do I fix CVE-2017-8841?

No fix has been published for CVE-2017-8841 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2017-8841 being exploited?

There is no known exploitation of CVE-2017-8841 in the wild and no public exploit code.

Public exploit code: 3 Exploit-DB entries.

Sources

Also known as GHSA-c522-v393-67mg.