Is CVE-2021-22873 actively exploited?

CVE-2021-22873 has no public evidence of in-the-wild exploitation as of 2024-11-21.

What is the CVSS score for CVE-2021-22873?

CVE-2021-22873 has a CVSS score of 6.1 (MEDIUM severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

How do I patch CVE-2021-22873?

Patch guidance is available from revive-adserver security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2021-22873.

Which products are affected by CVE-2021-22873?

1 product: revive-adserver revive adserver.

CVE-2021-22873 - remediation guidance & executive summary

Description

Revive Adserver before 5.1.0 is vulnerable to open redirects via the `dest`, `oadest`, and/or `ct0` parameters of the lg.php and ck.php delivery scripts. Such open redirects had previously been available by design to allow third party ad servers to track such metrics when delivering ads. However, third party click tracking via redirects is not a viable option anymore, leading to such open redirect functionality being removed and reclassified as a vulnerability.

CVSS Metrics

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 Action: required
Scope: changed
Confidentiality: low
Integrity: low
Availability: none
Weaknesses: CWE-601 CWE-601

Metadata

Primary Vendor: REVIVE-ADSERVER
Published: 1/26/2021
Last Modified: 11/21/2024
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2021-22873

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary