lib/MT/Upgrade.pm in mt-upgrade.cgi in Movable Type 4.2x and 4.3x through 4.38 does not require authentication for requests to database-migration functions, which allows remote attackers to conduct eval injection and SQL injection attacks via crafted parameters, as demonstrated by an eval injection attack against the core_drop_meta_for_table function, leading to execution of arbitrary Perl code.
CVSS Severity (version 2.0):
Impact Subscore: 6.4
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; Allows disruption of service
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[oss-security] 20130121 Re: CVE request for Movable Type
Advisory; Patch Information