Title: Abyss Web Server HTTP GET Heap Overrun Vulnerability
Severity: HIGH
Description:
Abyss Web Server is a freely available personal web server. It is maintained by Aprelium Technologies and runs on Microsoft Windows operating systems, as well as Linux.
Abyss Web Server is prone to a remotely exploitable heap overrun. This is due to insufficient bounds checking of data supplied via client HTTP GET requests which is used in a strcpy() operation. By submitting an HTTP GET request in excess of 2048 bytes, it will be possible to trigger this condition. It should be noted that the ':\' characters must be appended to the end of the request. This will permit remote attackers to corrupt adjacent regions of heap memory with attacker-supplied values.
This condition could be exploited to execute arbitrary code with the privileges of the web server.
This issue is reported to affect Abyss Web Server 1.1.2. Later versions, such as 1.1.4 and 1.1.5 may be similarly affected, though this has not been confirmed.
Affected Products:
- Aprelium Technologies Abyss Web Server 1.1.2
References:
- Aprelium Technologies: Abyss Web Server Homepage
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