inc/ticket.class.php in GLPI 0.83.9 and earlier allows remote attackers to unserialize arbitrary PHP objects via the _predefined_fields parameter to front/ticket.form.php.
"CWE-502: Deserialization of Untrusted Data"
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 modification; Allows disruption of service
References to Advisories, Solutions, and Tools
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[oss-security] 20130627 CVE request for GLPI
Patch Information; Exploit
[oss-security] 20130630 Re: CVE request for GLPI