CVE-1999-1053

Summary

CVE-1999-1053 is a vulnerability affecting the guestbook.pl script, which is used with Apache web servers. The issue arises from the script's flawed handling of SSI (Server Side Includes) commands. Instead of properly parsing these commands, the script removes text between the "<!--" and "-->" separators. Malicious users can exploit this vulnerability by inserting arbitrary commands within these separators, leading to potential execution of unintended code when the script is run on Apache 1.3.9 and possibly other versions. Apache's acceptance of alternative closing sequences for SSI commands might exacerbate the issue.

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