Title: HP-UX RWrite Buffer Overflow Vulnerability
Severity: MODERATE
Description:
HP-UX /usr/lbin/rwrite utility has been reported prone to a buffer overflow vulnerability. Although unconfirmed code execution with elevated privileges may be possible.
The condition presents itself when excessive data, consisting of more than 14628 bytes, is supplied as part of an argument passed to the vulnerable utility. When the rwrite application parses the argument it will segfault. The segfault is likely due to lack of sufficient bounds checking performed on the data before it is copied into an internal memory buffer. Excessive data may overrun the boundary of the buffer and adjacent memory containing values crucial to program flow or execution management may be corrupted. Although unconfirmed, because of the nature of this vulnerability, arbitrary code execution may be possible. Code execution, in a default install, would take place in the context of the root user.
The precise technical details of this vulnerability are currently unknown. This BID will be updated, as further information is available.
It should be noted that although this vulnerability has been reported to affect HP-UX version 11.00 other versions might also be affected.
Affected Products:
- HP HP-UX 11.0.0
- HP HP-UX 11.11.0
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