CVE-2017-0911 — Twitter Kit for iOS versions 3

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

01What is this vulnerability?

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…

02Affected products

Vendor	Product	Versions
Twitter	Twitter Kit for iOS	Versions 3.0 to 3.2.1

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2018-02-09T22:00:00.000Z
• Last modified: 2024-09-17T03:32:53.282Z

09References

• hackerone.com — https://hackerone.com/reports/290229
• blog.twitter.com — https://blog.twitter.com/developer/en_us/topics/tips/2018/vulnerability-in-twitt…
• github.com — https://github.com/twitter/twitter-kit-ios/blob/b6eb49d149b056d826cbc4b53eaeb39a…
• github.com — https://github.com/twitter/twitter-kit-ios/wiki/Changelog#322-november-28-2017
• github.com — https://github.com/twitter/twitter-kit-ios/blob/b6eb49d149b056d826cbc4b53eaeb39a…