Published:2015/05/20  Last Updated:2015/05/22

mt-phpincgi vulnerable to PHP object injection


mt-phpincgi contains a PHP object Injection vulnerability.

Products Affected

  • mt-phpincgi
This vulnerability has been addressed in mt-phpincgi.php security update released on 2015/05/15.


mt-phpincgi is script that runs Movable Type templates as PHP. mt-phpincgi contains a PHP object Injection vulnerability.

According to the reporter, attacks that attempt to exploit this vulnerability have been confirmed.


Arbitrary PHP code may be executed on the server by an unauthenticated attacker.


Apply the update
The developer has released an update at mt-phpincgi.php security update.
Apply the update according to the information provided by the developer.

Vendor Status

Vendor Status Last Update Vendor Notes
Hajime Fujimoto Vulnerable 2015/05/20 Hajime Fujimoto website


JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2015.05.20 (CVSS Base Metrics)

What is CVSS?

Measures Severity Description
Access Vector(AV) Local (L) Adjacent Network (A) Network (N) A vulnerability exploitable with network access means the vulnerable software is bound to the network stack and the attacker does not require local network access or local access. Such a vulnerability is often termed "remotely exploitable".
Access Complexity(AC) High (H) Medium (M) Low (L) Specialized access conditions or extenuating circumstances do not exist.
Authentication(Au) Multiple (M) Single (S) None (N) Authentication is not required to exploit the vulnerability.
Confidentiality Impact(C) None (N) Partial (P) Complete (C) There is considerable informational disclosure. Access to some system files is possible, but the attacker does not have control over what is obtained, or the scope of the loss is constrained.
Integrity Impact(I) None (N) Partial (P) Complete (C) Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.
Availability Impact(A) None (N) Partial (P) Complete (C) There is reduced performance or interruptions in resource availability.

Base Score:7.5


Other Information

JPCERT Reports
CERT Advisory
CPNI Advisory
CVE CVE-2015-2945
JVN iPedia JVNDB-2015-000067

Update History

Fixed wording error under "Solution".