The Administration console for Abyss Web Server 1.0.3 before Patch 2 allows remote attackers to gain privileges and modify server configuration via direct requests to CHL files such as (1) srvstatus.chl, (2) consport.chl, (3) general.chl, (4) srvparam.chl, and (5) advanced.chl.
The Administration console for Abyss Web Server 1.0.3 allows remote attackers to read files without providing login credentials via an HTTP request to a target file that ends in a "+" character.