Vulnerabilities
Misconfiguration
Runtime Security
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CVE Vulnerabilities

CVE-2018-12364

Cross-Site Request Forgery (CSRF)

Published: Oct 18, 2018 | Modified: Dec 03, 2018
CVSS 3.x
8.8
HIGH
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.x
6.8 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2018-12364
CWEhttps://cwe.mitre.org/data/definitions/352.html

NPAPI plugins, such as Adobe Flash, can send non-simple cross-origin requests, bypassing CORS by making a same-origin POST that does a 307 redirect to the target site. This allows for a malicious site to engage in cross-site request forgery (CSRF) attacks. This vulnerability affects Thunderbird < 60, Thunderbird < 52.9, Firefox ESR < 60.1, Firefox ESR < 52.9, and Firefox < 61.

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
Enterprise_linux_desktop Redhat 6.0 (including) 6.0 (including)
Enterprise_linux_desktop Redhat 7.0 (including) 7.0 (including)
Enterprise_linux_server Redhat 6.0 (including) 6.0 (including)
Enterprise_linux_server Redhat 7.0 (including) 7.0 (including)
Enterprise_linux_server_aus Redhat 7.6 (including) 7.6 (including)
Enterprise_linux_server_eus Redhat 7.5 (including) 7.5 (including)
Enterprise_linux_server_eus Redhat 7.6 (including) 7.6 (including)
Enterprise_linux_server_tus Redhat 7.6 (including) 7.6 (including)
Enterprise_linux_workstation Redhat 6.0 (including) 6.0 (including)
Enterprise_linux_workstation Redhat 7.0 (including) 7.0 (including)

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

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