CVE-2022-38078
Published: 24 August 2022
Summary
CVE-2022-38078 is a critical-severity Code Injection (CWE-94) vulnerability in Sixapart Movable Type. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 9.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
Movable Type XMLRPC API, a component of Six Apart's Movable Type content management system, contains a command injection vulnerability (CWE-94). Affected releases include Movable Type 7 r.5202 and earlier, Movable Type Advanced 7 r.5202 and earlier, Movable Type 6.8.6 and earlier, Movable Type Advanced 6.8.6 and earlier, Movable Type Premium 1.52 and earlier, Movable Type Premium Advanced 1.52 and earlier, and all versions from 4.0 onward, including unsupported EOL releases. The flaw permits an unauthenticated attacker to supply a crafted XML-RPC POST request that results in arbitrary Perl script execution.
An attacker with network access can exploit the issue without authentication or user interaction to run arbitrary operating-system commands on the server. The vulnerability carries a CVSS 3.1 base score of 9.8, reflecting its critical severity and the full compromise potential of confidentiality, integrity, and availability.
Vendor advisories and the associated JVN notification direct administrators to apply the fixes released in August 2022, specifically Movable Type 7.9.5, 6.8.7, and corresponding Premium updates. The EPSS score remains flat at 0.0522 with no observed increase after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-40681
Vulnerability details
Movable Type XMLRPC API provided by Six Apart Ltd. contains a command injection vulnerability. Sending a specially crafted message by POST method to Movable Type XMLRPC API may allow arbitrary Perl script execution, and an arbitrary OS command may be…
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executed through it. Affected products and versions are as follows: Movable Type 7 r.5202 and earlier, Movable Type Advanced 7 r.5202 and earlier, Movable Type 6.8.6 and earlier, Movable Type Advanced 6.8.6 and earlier, Movable Type Premium 1.52 and earlier, and Movable Type Premium Advanced 1.52 and earlier. Note that all versions of Movable Type 4.0 or later including unsupported (End-of-Life, EOL) versions are also affected by this vulnerability.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Makes persistent code injection into loaded programs impossible when the executable image itself resides on hardware-protected read-only media.
Dynamically generated code can be produced and executed inside the isolated chamber, preventing host compromise from code-injection payloads.
Validates inputs used in dynamic code generation to block injected directives.
Directly prevents execution of attacker-supplied code written into data memory regions.