Published:2016/05/13  Last Updated:2016/05/16

JVN#44657371
WordPress plugin "Ninja Forms" vulnerable to PHP object injection

Overview

WordPress plugin "Ninja Forms" contains a PHP object injection vulnerability.

Products Affected

  • Ninja Forms Version 2.9.36 to 2.9.42

Description

WordPress plugin "Ninja Forms" contains a PHP object injection vulnerability due to a flaw where untrusted POST values are unserialized.

Impact

A remote attacker may execute an arbitrary PHP code.

Solution

Update the Software
Update to a version that addresses the vulnerability according to the information provided by the developer.

The developer states that versions 2.9.43 and .1 versions of 2.9.36 through 2.9.42 address this vulnerability (e.g. 2.9.36.1, 2.9.37.1, etc.).
Also, the developer suggests updating to version 2.9.45, which contains fixes for other vulnerabilities.

References

  1. Pritect Network
    Ninja Forms <= 2.9.42 Multiple Critical Security Vulnerabilities

JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

CVSS v3 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Base Score: 5.6
Attack Vector(AV) Physical (P) Local (L) Adjacent (A) Network (N)
Attack Complexity(AC) High (H) Low (L)
Privileges Required(PR) High (H) Low (L) None (N)
User Interaction(UI) Required (R) None (N)
Scope(S) Unchanged (U) Changed (C)
Confidentiality Impact(C) None (N) Low (L) High (H)
Integrity Impact(I) None (N) Low (L) High (H)
Availability Impact(A) None (N) Low (L) High (H)
CVSS v2 AV:N/AC:M/Au:N/C:P/I:P/A:P
Base Score: 6.8
Access Vector(AV) Local (L) Adjacent Network (A) Network (N)
Access Complexity(AC) High (H) Medium (M) Low (L)
Authentication(Au) Multiple (M) Single (S) None (N)
Confidentiality Impact(C) None (N) Partial (P) Complete (C)
Integrity Impact(I) None (N) Partial (P) Complete (C)
Availability Impact(A) None (N) Partial (P) Complete (C)

Credit

Other Information

JPCERT Alert
JPCERT Reports
CERT Advisory
CPNI Advisory
TRnotes
CVE CVE-2016-1209
JVN iPedia JVNDB-2016-000064

Update History

2016/05/16
Information under the section "Credit" was deleted.