What is CVE-2021-22872?

CVE-2021-22872 is a vulnerability in Revive Adserver before version 5.1.0 that allows for reflected cross-site scripting (XSS) attacks.

How does CVE-2021-22872 affect Revive Adserver?

CVE-2021-22872 affects Revive Adserver versions prior to 5.1.0, allowing attackers to execute arbitrary script code in the context of a victim's browser.

What is the severity of CVE-2021-22872?

The severity of CVE-2021-22872 is medium, with a CVSS score of 6.1.

How can I fix the CVE-2021-22872 vulnerability?

To fix the CVE-2021-22872 vulnerability, it is recommended to upgrade Revive Adserver to version 5.1.0 or later.

Are there any references for CVE-2021-22872?

Yes, here are some references for CVE-2021-22872: [Reference 1](http://packetstormsecurity.com/files/161070/Revive-Adserver-5.0.5-Cross-Site-Scripting-Open-Redirect.html), [Reference 2](http://seclists.org/fulldisclosure/2021/Jan/60), [Reference 3](https://github.com/revive-adserver/revive-adserver/commit/00fdb8d0e).

Vulnerability/
CVE-2021-22872

medium

6.1

CWE

21/1/2021

3/8/2024

CVE-2021-22872: XSS

First published: Thu Jan 21 2021(Updated: )

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.

Credit: support@hackerone.com

Affected Software	Affected Version	How to fix
Revive-adserver Revive Adserver	<5.1.0

Remedy

https://github.com/revive-adserver/revive-adserver/commit/00fdb8d0e

Remedy

https://github.com/revive-adserver/revive-adserver/commit/1dbcf7d50

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Reference Links

Frequently Asked Questions

What is CVE-2021-22872?
CVE-2021-22872 is a vulnerability in Revive Adserver before version 5.1.0 that allows for reflected cross-site scripting (XSS) attacks.
How does CVE-2021-22872 affect Revive Adserver?
CVE-2021-22872 affects Revive Adserver versions prior to 5.1.0, allowing attackers to execute arbitrary script code in the context of a victim's browser.
What is the severity of CVE-2021-22872?
The severity of CVE-2021-22872 is medium, with a CVSS score of 6.1.
How can I fix the CVE-2021-22872 vulnerability?
To fix the CVE-2021-22872 vulnerability, it is recommended to upgrade Revive Adserver to version 5.1.0 or later.
Are there any references for CVE-2021-22872?
Yes, here are some references for CVE-2021-22872: [Reference 1](http://packetstormsecurity.com/files/161070/Revive-Adserver-5.0.5-Cross-Site-Scripting-Open-Redirect.html), [Reference 2](http://seclists.org/fulldisclosure/2021/Jan/60), [Reference 3](https://github.com/revive-adserver/revive-adserver/commit/00fdb8d0e).

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vendor/revive-adserver
canonical/revive-adserver revive adserver

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