CVE-2010-5088

Multiple cross-site request forgery (CSRF) vulnerabilities in SilverStripe 2.3.x before 2.3.9 and 2.4.x before 2.4.3 allow remote attackers to hijack the authentication of administrators via destructive controller actions, a different vulnerability than CVE-2010-5087.

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

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]

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/111.html
• https://cwe.mitre.org/data/definitions/462.html
• https://cwe.mitre.org/data/definitions/467.html
• https://cwe.mitre.org/data/definitions/62.html

References

• http://doc.silverstripe.org/sapphire/en/trunk/changelogs//2.3.9
• http://doc.silverstripe.org/sapphire/en/trunk/changelogs//2.4.3
• http://holisticinfosec.org/content/view/157/45/
• http://open.silverstripe.org/changeset/113275
• http://open.silverstripe.org/changeset/113282
• http://secunia.com/advisories/41717
• http://www.openwall.com/lists/oss-security/2011/01/03/12
• http://www.openwall.com/lists/oss-security/2012/04/30/1
• http://www.openwall.com/lists/oss-security/2012/04/30/3
• http://www.openwall.com/lists/oss-security/2012/05/01/3
• http://www.osvdb.org/69113
• http://www.securityfocus.com/bid/44768
• https://exchange.xforce.ibmcloud.com/vulnerabilities/63156