Medium severity · published Jan 26, 2021
CVE-2021-22872
Revive Adserver before 5.1.0 is vulnerable to a reflected cross-site scripting (XSS) vulnerability via the publicly accessible afr.php delivery script
6.1
CVSS
3.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)3.5% · higher than 89% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RA
Revive Adserver · Revive-adserver
before 5.1.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-22872
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-22872
Third Party Advisory
http://packetstormsecurity.com/files/161070/Revive-Adserver-5.0.5-Cross-Site-Scripting-Open-Redirect.html
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/
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