U.S. Dept Of Defense · Report #1278891
[CVE-2021-29156] LDAP Injection at https://██████
How it was found
Description: https://█████ is vulnerable to CVE-2021-29156
References
- https://hackerone.com/reports/1278050
- https://nvd.nist.gov/vuln/detail/CVE-2021-29156
- https://portswigger.net/research/hidden-oauth-attack-vectors
- https://github.com/projectdiscovery/nuclei-templates/blob/74db4223c11d27a934ca1c417aa4abca9e70ad35/cves/2021/CVE-2021-29156.yaml
Impact
ForgeRock OpenAM before 13.5.1 allows LDAP injection via the Webfinger protocol. For example, an unauthenticated attacker can perform character-by-character retrieval of password hashes, or retrieve a session token or a private key.
System Host(s)
███████
Affected Product(s) and Version(s)
CVE Numbers
CVE-2021-29156
Steps to Reproduce
The references mentioned shall be helpful for successful reproduction, especially the one I reported the earlier day (#1278050) and the PortSwigger one.
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Username starting with ██████████ exists: https://█████████/███/███████[200 OK]
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Username starting with ███████ doesn't exist: https://██████████/██████████/█████████████[404 Not Found]
For 200 OK response, it also throws out OpenAM instance address: ███
Similar thing can be done for password enumeration as well. You can find the scripts I wrote for username and password enumeration in my earlier report at a different host.