IT security company Sense of Security has discovered a serious bug in Apache's HTTP web server, which could allow a remote attacker to gain complete control of a database.

Discovered by the company's security consultant Brett Gervasoni, the vulnerability exists in Apache's core "mod_isapi" module. By exploiting the module, an attacker could remotely gain system privileges that would compromise data security.

Users of Apache 2.2.14 and earlier are advised to upgrade to Apache 2.2.15, which fixes the exploit.

According to Sense of Security spokesperson Jason Edelstein, Apache is one of the most popular pieces of web server software used today and the vulnerability was one of the most significant bugs in Apache for years.

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