Dynamic variable evaluation vulnerability in index.php in Stadtaus Guestbook Script 1.7 and earlier, when register_globals is enabled, allows remote attackers to modify arbitrary program variables via parameters, which are evaluated as PHP variable variables, as demonstrated by performing PHP remote file inclusion using the include_files array parameter.
CVSS Severity (version 2.0):
Impact Subscore: 4.9
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification
Download Guestbook Script 1.9
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Vulnerable software and versions