Reliance on Reverse DNS Resolution for a Security-Critical Action in gupnp - CVE-2021-33516
Published: June 10, 2021
Vulnerability identifier: #VU54033
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-33516
CWE-ID: CWE-350
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Gnome Development Team
Affected software:
gupnp
gupnp
Detailed vulnerability description
The vulnerability allows a remote attacker to perform DNS rebinding attacks.
The vulnerability exists due to a logic issue in GUPnP. A remote attacker can trick a victim's browser into triggering actions against local UPnP services implemented using this library and gain access to sensitive information (e.g. data exfiltration) or tamper with data.
How to mitigate CVE-2021-33516
Install updates from vendor's website.