CVE-2022-39284

CodeIgniter is a PHP full-stack web framework. In versions prior to 4.2.7 setting $secure or $httponly value to true in ConfigCookie is not reflected in set_cookie() or Response::setCookie(). As a result cookie values are erroneously exposed to scripts. It should be noted that this vulnerability does not affect session cookies. Users are advised to upgrade to v4.2.7 or later. Users unable to upgrade are advised to manually construct their cookies either by setting the options in code or by constructing Cookie objects. Examples of each workaround are available in the linked GHSA.

Weakness

The product does not initialize or incorrectly initializes a resource, which might leave the resource in an unexpected state when it is accessed or used.

Affected Software

Potential Mitigations

• Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
• For example, in Java, if the programmer does not explicitly initialize a variable, then the code could produce a compile-time error (if the variable is local) or automatically initialize the variable to the default value for the variable’s type. In Perl, if explicit initialization is not performed, then a default value of undef is assigned, which is interpreted as 0, false, or an equivalent value depending on the context in which the variable is accessed.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/26.html
• https://cwe.mitre.org/data/definitions/29.html

References

• https://codeigniter4.github.io/userguide/helpers/cookie_helper.html#set_cookie
• https://codeigniter4.github.io/userguide/outgoing/response.html#CodeIgniter%5CHTTP%5CResponse::setCookie
• https://developer.mozilla.org/en-US/docs/Web/HTTP/Cookies#restrict_access_to_cookies
• https://github.com/codeigniter4/CodeIgniter4/issues/6540
• https://github.com/codeigniter4/CodeIgniter4/pull/6544
• https://github.com/codeigniter4/CodeIgniter4/security/advisories/GHSA-745p-r637-7vvp
• https://codeigniter4.github.io/userguide/helpers/cookie_helper.html#set_cookie
• https://codeigniter4.github.io/userguide/outgoing/response.html#CodeIgniter%5CHTTP%5CResponse::setCookie
• https://developer.mozilla.org/en-US/docs/Web/HTTP/Cookies#restrict_access_to_cookies
• https://github.com/codeigniter4/CodeIgniter4/issues/6540
• https://github.com/codeigniter4/CodeIgniter4/pull/6544
• https://github.com/codeigniter4/CodeIgniter4/security/advisories/GHSA-745p-r637-7vvp