CVE-2021-33516

Description

An issue was discovered in GUPnP before 1.0.7 and 1.1.x and 1.2.x before 1.2.5. It allows DNS rebinding. A remote web server can exploit this vulnerability to trick a victim's browser into triggering actions against local UPnP services implemented using this library. Depending on the affected service, this could be used for data exfiltration, data tempering, etc.

8.1

CVSS

Severity: High

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.36%

Vendor Advisory gnome.org Vendor Advisory gnome.org

Affected: n/a n/a

References

Link	Tags
https://gitlab.gnome.org/GNOME/gupnp/-/issues/24	issue tracking vendor advisory
https://discourse.gnome.org/t/security-relevant-releases-for-gupnp-issue-cve-2021-33516/6536	patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-33516?: CVE-2021-33516 has been scored as a high severity vulnerability.
How to fix CVE-2021-33516?: To fix CVE-2021-33516, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-33516 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-33516 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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