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CVE Vulnerabilities

CVE-2015-0218

Cross-Site Request Forgery (CSRF)

Published: Jun 01, 2015 | Modified: Apr 12, 2025
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
6.8 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2015-0218
CWEhttps://cwe.mitre.org/data/definitions/352.html

Cross-site request forgery (CSRF) vulnerability in auth/shibboleth/logout.php in Moodle through 2.5.9, 2.6.x before 2.6.7, 2.7.x before 2.7.4, and 2.8.x before 2.8.2 allows remote attackers to hijack the authentication of arbitrary users for requests that trigger a logout.

Weakness

The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.

Affected Software

NameVendorStart VersionEnd Version
MoodleMoodle*2.5.9 (including)
MoodleMoodle2.5.0 (including)2.5.0 (including)
MoodleMoodle2.5.1 (including)2.5.1 (including)
MoodleMoodle2.5.2 (including)2.5.2 (including)
MoodleMoodle2.5.3 (including)2.5.3 (including)
MoodleMoodle2.5.4 (including)2.5.4 (including)
MoodleMoodle2.5.5 (including)2.5.5 (including)
MoodleMoodle2.5.6 (including)2.5.6 (including)
MoodleMoodle2.5.7 (including)2.5.7 (including)
MoodleMoodle2.5.8 (including)2.5.8 (including)
MoodleMoodle2.6.0 (including)2.6.0 (including)
MoodleMoodle2.6.1 (including)2.6.1 (including)
MoodleMoodle2.6.2 (including)2.6.2 (including)
MoodleMoodle2.6.3 (including)2.6.3 (including)
MoodleMoodle2.6.4 (including)2.6.4 (including)
MoodleMoodle2.6.5 (including)2.6.5 (including)
MoodleMoodle2.6.6 (including)2.6.6 (including)
MoodleMoodle2.7.0 (including)2.7.0 (including)
MoodleMoodle2.7.1 (including)2.7.1 (including)
MoodleMoodle2.7.2 (including)2.7.2 (including)
MoodleMoodle2.7.3 (including)2.7.3 (including)
MoodleMoodle2.8.0 (including)2.8.0 (including)
MoodleUbuntuartful*
MoodleUbuntulucid*
MoodleUbuntuprecise*
MoodleUbuntutrusty*
MoodleUbuntuupstream*
MoodleUbuntuutopic*
MoodleUbuntuvivid*
MoodleUbuntuwily*
MoodleUbuntuyakkety*
MoodleUbuntuzesty*

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 [REF-1482].
  • 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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