CVE-2017-0911
First published: Tue Nov 28 2017(Updated: )
Twitter Kit for iOS versions 3.0 to 3.2.1 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.
Credit: support@hackerone.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Twitter Twitter Kit | >=3.0<=3.2.1 |
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Reference Links
- https://blog.twitter.com/developer/en_us/topics/tips/2018/vulnerability-in-twitter-kit-for-ios.html
- https://github.com/twitter/twitter-kit-ios/blob/b6eb49d149b056d826cbc4b53eaeb39a3ebd591e/TwitterKit/TwitterKit/Social/Identity/TWTRMobileSSO.m#L71
- https://github.com/twitter/twitter-kit-ios/blob/b6eb49d149b056d826cbc4b53eaeb39a3ebd591e/TwitterKit/TwitterKit/TWTRTwitter.m#L411
- https://github.com/twitter/twitter-kit-ios/wiki/Changelog#322-november-28-2017
- https://hackerone.com/reports/290229
Frequently Asked Questions
What is the severity of CVE-2017-0911?
CVE-2017-0911 has been classified as a medium severity vulnerability due to the potential exposure of user credentials.
How do I fix CVE-2017-0911?
To resolve CVE-2017-0911, update Twitter Kit for iOS to version 3.2.2 or later.
What is the vulnerability in CVE-2017-0911?
CVE-2017-0911 is a callback verification flaw that allows attackers to provide alternate credentials during Twitter authentication.
Which versions of Twitter Kit for iOS are affected by CVE-2017-0911?
Twitter Kit for iOS versions 3.0 to 3.2.1 are affected by CVE-2017-0911.
What can attackers do with CVE-2017-0911?
Attackers can exploit CVE-2017-0911 to intercept and manipulate authentication information, potentially compromising user accounts.
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- version/twitter twitter kit/3.2.1