CVE Vulnerabilities

CVE-2016-8350

Cross-Site Request Forgery (CSRF)

Published: Feb 13, 2017 | Modified: May 19, 2021
CVSS 3.x
6.3
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
CVSS 2.x
6.8 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu

An issue was discovered in Moxa ioLogik E1210, firmware Version V2.4 and prior, ioLogik E1211, firmware Version V2.3 and prior, ioLogik E1212, firmware Version V2.4 and prior, ioLogik E1213, firmware Version V2.5 and prior, ioLogik E1214, firmware Version V2.4 and prior, ioLogik E1240, firmware Version V2.3 and prior, ioLogik E1241, firmware Version V2.4 and prior, ioLogik E1242, firmware Version V2.4 and prior, ioLogik E1260, firmware Version V2.4 and prior, ioLogik E1262, firmware Version V2.4 and prior, ioLogik E2210, firmware versions prior to V3.13, ioLogik E2212, firmware versions prior to V3.14, ioLogik E2214, firmware versions prior to V3.12, ioLogik E2240, firmware versions prior to V3.12, ioLogik E2242, firmware versions prior to V3.12, ioLogik E2260, firmware versions prior to V3.13, and ioLogik E2262, firmware versions prior to V3.12. The web application may not sufficiently verify whether a request was provided by a valid user (CROSS-SITE REQUEST FORGERY).

Weakness

The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request.

Affected Software

Name Vendor Start Version End Version
Iologik_e1200_series_firmware Moxa * 2.4

Potential Mitigations

  • Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
  • For example, use anti-CSRF packages such as the OWASP CSRFGuard. [REF-330]
  • Another example is the ESAPI Session Management control, which includes a component for CSRF. [REF-45]
  • Use the “double-submitted cookie” method as described by Felten and Zeller:
  • When a user visits a site, the site should generate a pseudorandom value and set it as a cookie on the user’s machine. The site should require every form submission to include this value as a form value and also as a cookie value. When a POST request is sent to the site, the request should only be considered valid if the form value and the cookie value are the same.
  • Because of the same-origin policy, an attacker cannot read or modify the value stored in the cookie. To successfully submit a form on behalf of the user, the attacker would have to correctly guess the pseudorandom value. If the pseudorandom value is cryptographically strong, this will be prohibitively difficult.
  • This technique requires Javascript, so it may not work for browsers that have Javascript disabled. [REF-331]

References