Description
The addUser function in UserManager.java in Free Web Chat 2.0 allows remote attackers to cause a denial of service (uncaught NullPointerException) via unknown attack vectors that cause the usrName variable to be null.
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- Free Web Chat Initial Release - UserManager.java Null Pointer Denial of Service EDB-24351 · dos · Aug 4, 2004 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- 20040804 Multiple Vulnerabilities in Free Web Chat mailing-list
- 10863 vdb-entry
- 1010851 vdb-entry
- 20040804 Multiple Vulnerabilities in Free Web Chat mailing-list
- 8369 vdb-entry
- freewebchat-usermanager-dos(16893) vdb-entry