Command Injection in OpenWrt - CVE-2021-28961
Published: August 5, 2021
Vulnerability identifier: #VU55591
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-28961
CWE-ID: CWE-77
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: openwrt.org
Affected software:
OpenWrt
OpenWrt
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary commands on the target system.
The vulnerability exists due to improper input validation in the applications/luci-app-ddns/luasrc/model/cbi/ddns/detail.lua in the DDNS package. A remote authenticated attacker can pass specially crafted data to the application and execute arbitrary commands on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2021-28961
Install updates from vendor's website.