Home/CVE/Revive Adserver before 5.1.0 is vulnerable to open redirects via the `dest`, `oadest`, and/or `ct0` parameters of the lg
CVE

CVE-2021-22873

Revive Adserver before 5.1.0 is vulnerable to open redirects via the `dest`, `oadest`, and/or `ct0` parameters of the lg

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.

MEDIUM · CVSS 6.1 EPSS 0.48321
Schedule remediation
  • EPSS ≥ 0.10 - elevated exploitation probability
  • EPSS percentile: top 2% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-601URL Redirection to Untrusted Site ('Open Redirect')
CWE-601URL Redirection to Untrusted Site ('Open Redirect')
▤

Affected Products & Versions

1
revive-adserver revive adserver< 5.1.0
⚠

Public Exploits & PoCs

3
nucleiRevive Adserver <5.1.0 - Open Redirectmedium
pocpacketstormsecurity.com · Revive-Adserver-5.0.5-Cross-Site-Scripting-Open-Redirect....packetstormsecurity.com
pochackerone.com · 1081406hackerone.com
▣

Scoring & Timeline

6.1
MEDIUM · CVSS v3.1 · support@hackerone.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD26 Jan 2021 · 06:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://seclists.org/fulldisclosure/2021/Jan/60Broken LinkMailing ListThird Party Advisory
https://github.com/revive-adserver/revive-adserver/issues/1068Issue TrackingThird Party Advisory
https://www.revive-adserver.com/security/revive-sa-2021-001/Vendor Advisory
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