CVE-2021-22872

moderate-risk
Published 2021-01-26

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.

Do I need to act?

~
2.1% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.1/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Revive-Adserver

References (12)

Third Party Advisory http://packetstormsecurity.com/files/161070/Revive-Adserver-5.0.5-Cross-Site-Scr...
Broken Link http://seclists.org/fulldisclosure/2021/Jan/60
Patch https://github.com/revive-adserver/revive-adserver/commit/00fdb8d0e
Patch https://github.com/revive-adserver/revive-adserver/commit/1dbcf7d50
Exploit https://hackerone.com/reports/986365
Vendor Advisory https://www.revive-adserver.com/security/revive-sa-2021-001/
Third Party Advisory http://packetstormsecurity.com/files/161070/Revive-Adserver-5.0.5-Cross-Site-Scr...
Broken Link http://seclists.org/fulldisclosure/2021/Jan/60
Patch https://github.com/revive-adserver/revive-adserver/commit/00fdb8d0e
Patch https://github.com/revive-adserver/revive-adserver/commit/1dbcf7d50
Exploit https://hackerone.com/reports/986365
Vendor Advisory https://www.revive-adserver.com/security/revive-sa-2021-001/
33
/ 100
moderate-risk
Severity 23/34 · High
Exploitability 5/34 · Minimal
Exposure 5/34 · Minimal