Hidden functionality in DSL-2888A - CVE-2020-24581
Published: December 18, 2020
Vulnerability identifier: #VU49091
CSH Severity: Medium
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-24581
CWE-ID: CWE-912
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to escalate privileges on the device.
The vulnerability exists due to presence of hidden functionality in firmware. A remote authenticated user can execute arbitrary OS commands via "cmd" parameter to "/cgi-bin/execute_cmd.cgi" script.
Example:
http://DeviceIP/cgi-bin/execute_cmd.cgi?timestamp=1589333279490&cmd=ls
Affected software
DSL-2888A
How to mitigate CVE-2020-24581
Install updates from vendor's website.
DSL-2888A - update to 2.31