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Revive Adserver versions prior to 5.1.0 contain an open redirect vulnerability in the lg.php and ck.php delivery scripts. The vulnerability is triggered by improper validation of the 'dest', 'oadest', and 'ct0' parameters, which can be manipulated to redirect users to arbitrary external URLs. This functionality was originally intended for third-party ad tracking but is now considered a security risk.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository provides a proof-of-concept (PoC) exploit for CVE-2021-22873, an open redirect vulnerability in Revive Adserver versions prior to 5.1.0. The exploit consists of a Bash script (CVE-2021-22873.sh) that takes a target URL as input, appends a crafted path to the lg.php script with the 'dest' parameter set to an external site, and uses curl to check the HTTP response headers for a redirect (Location header). The README.md explains the vulnerability, its impact, and provides manual reproduction steps. The exploit demonstrates the ability to test if a Revive Adserver instance is vulnerable to open redirects, which could be abused for phishing or malware distribution. No weaponized payload is included; the script is a simple PoC for detection and demonstration purposes.
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