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id : CVE-2021-22873
info :
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name : Revive Adserver <5.1.0 - Open Redirect
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author : pudsec
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severity : medium
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description : Revive Adserver before 5.1.0 contains an open redirect vulnerability via the dest, oadest, and ct0 parameters of the lg.php and ck.php delivery scripts. An attacker can redirect a user to a malicious site and possibly obtain sensitive information, modify data, and/or execute unauthorized operations.
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reference :
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- https://hackerone.com/reports/1081406
- https://github.com/revive-adserver/revive-adserver/issues/1068
- http://seclists.org/fulldisclosure/2021/Jan/60
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- https://nvd.nist.gov/vuln/detail/CVE-2021-22873
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- http://packetstormsecurity.com/files/161070/Revive-Adserver-5.0.5-Cross-Site-Scripting-Open-Redirect.html
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classification :
cvss-metrics : CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
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cvss-score : 6.1
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cve-id : CVE-2021-22873
cwe-id : CWE-601
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epss-score : 0.00717
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cpe : cpe:2.3:a:revive-adserver:revive_adserver:*:*:*:*:*:*:*:*
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metadata :
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max-request : 6
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shodan-query : http.favicon.hash:106844876
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verified : true
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vendor : revive-adserver
product : revive_adserver
tags : hackerone,seclists,packetstorm,cve2021,redirect,revive,cve
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http :
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- method : GET
path :
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- "{{BaseURL}}/ads/www/delivery/lg.php?dest=http://interact.sh"
- "{{BaseURL}}/adserve/www/delivery/lg.php?dest=http://interact.sh"
- "{{BaseURL}}/adserver/www/delivery/lg.php?dest=http://interact.sh"
- "{{BaseURL}}/openx/www/delivery/lg.php?dest=http://interact.sh"
- "{{BaseURL}}/revive/www/delivery/lg.php?dest=http://interact.sh"
- "{{BaseURL}}/www/delivery/lg.php?dest=http://interact.sh"
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stop-at-first-match : true
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host-redirects : true
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max-redirects : 2
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matchers :
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- type : regex
part : header
regex :
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- '(?m)^(?:Location\s*?:\s*?)(?:https?:\/\/|\/\/|\/\\\\|\/\\)(?:[a-zA-Z0-9\-_\.@]*)interact\.sh\/?(\/|[^.].*)?$' # https://regex101.com/r/L403F0/1