CVE-2021-27250 Path traversal in DAP-2020
Network-adjacent attackers can exploit a path traversal flaw in CGI scripts to disclose stored credentials on D-Link access points.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-27250?
CVE-2021-27250 is a medium-severity path traversal vulnerability in D-Link DAP-2020, published on 14 Apr 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of D-Link DAP-2020 v1.01rc001 Wi-Fi access points. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of CGI scripts. When parsing the errorpage request parameter, the process does not properly validate a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to disclose stored credentials, leading to further compromise. Was ZDI-CAN-11856.
Weakness: CWE-73
Which versions are affected by CVE-2021-27250?
It affects 1 product.
Products include Dlink Dap-2020 Firmware.
How do I fix CVE-2021-27250?
No fix has been published for CVE-2021-27250 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-2021-27250 being exploited?
There is no known exploitation of CVE-2021-27250 in the wild and no public exploit code.
Other vulnerabilities in D-Link DAP-2020
Sources
Also known as GHSA-wr5r-74rp-qh45.