A vulnerability has been reported in IBM Informix Dynamic Server, which can be exploited by malicious users to compromise a vulnerable system.
The vulnerability is caused due to a boundary error in the oninit process (port 9088/TCP) when processing arguments to the "USELASTCOMMITTED" environment option in a SQL query. This can be exploited to cause a stack-based buffer overflow via an overly long argument.
Successful exploitation may allow execution of arbitrary code, but requires SQL query execution privileges.
The vulnerability is reported in version 11.50. Other versions may also be affected.
Solution: Restrict access to the service.
Provided and/or discovered by: An anonymous person via ZDI.
Original Advisory: ZDI:
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Subject: IBM Informix Dynamic Server USELASTCOMMITTED Option Buffer Overflow
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