CVE-2021-22872

Public Exploit

Description

Revive Adserver before 5.1.0 is vulnerable to a reflected cross-site scripting (XSS) vulnerability via the publicly accessible afr.php delivery script. While this issue was previously addressed in modern browsers as CVE-2020-8115, some older browsers (e.g., IE10) that do not automatically URL encode parameters were still vulnerable.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.94% Top 20%
Vendor Advisory revive-adserver.com
Affected: n/a https://github.com/revive-adserver/revive-adserver
Published at:
Updated at:

References

Link Tags
https://www.revive-adserver.com/security/revive-sa-2021-001/ vendor advisory
https://hackerone.com/reports/986365 third party advisory exploit
https://github.com/revive-adserver/revive-adserver/commit/00fdb8d0e third party advisory patch
https://github.com/revive-adserver/revive-adserver/commit/1dbcf7d50 third party advisory patch
http://seclists.org/fulldisclosure/2021/Jan/60 mailing list third party advisory broken link
http://packetstormsecurity.com/files/161070/Revive-Adserver-5.0.5-Cross-Site-Scripting-Open-Redirect.html vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-22872?
CVE-2021-22872 has been scored as a medium severity vulnerability.
How to fix CVE-2021-22872?
To fix CVE-2021-22872, 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-2021-22872 being actively exploited in the wild?
It is possible that CVE-2021-22872 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-22872?
CVE-2021-22872 affects n/a https://github.com/revive-adserver/revive-adserver.
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