CSRF in Twitter Kit
CVE-2019-5431
This vulnerability was caused by an incomplete fix to CVE-2017-0911. Twitter Kit for iOS versions 3.0 to 3.4.0 is vulnerable to a callback verification flaw in the "Login with Twitter" component allowing an attacker to provide alternate credentials. In the final step of "Login with Twitter" authentication information is passed back to the application using the registered custom URL scheme (typically twitterkit-<consumer-key>) on iOS. Because the callback handler did not verify the authenticity of the response, this step is vulnerable to forgery, potentially allowing attacker to associate a Twitter account with a third-party service.
Vulnerability class: CSRF (Cross-Site Request Forgery)
EPSS: 0.004 (31.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.
Affected products
- Twitter Twitter_kit
- N/a Twitter Kit For Ios — versions v3.4.2
Weakness classification (CWE)
References
- support@hackerone.com (x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2019-5431?
- CVE-2019-5431 is a medium-severity vulnerability in Twitter Kit, classified under Cross-Site Request Forgery (CSRF). CVSS score: 5.4/10. Published 2019-05-06.
- How severe is CVE-2019-5431?
- Medium severity. CVSS v3 base score is 5.4 out of 10.