CVE-2019-16263

Public Exploit

Description

The Twitter Kit framework through 3.4.2 for iOS does not properly validate the api.twitter.com SSL certificate. Although the certificate chain must contain one of a set of pinned certificates, there are certain implementation errors such as a lack of hostname verification. NOTE: this is an end-of-life product.

Category

7.4
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.20%
Third-Party Advisory appicaptor.com Third-Party Advisory github.com Third-Party Advisory fraunhofer.de
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/twitter-archive/twitter-kit-ios/blob/ac42e1351a66afa5ff7718d04d64a905dafe1f41/TwitterCore/TwitterCore/Networking/Security/TWTRServerTrustEvaluator.m#L75-L81 third party advisory
https://www.sit.fraunhofer.de/fileadmin/dokumente/CVE/Advisory_TwitterKit_for_iOS_CVE-2019-16263.pdf third party advisory exploit
https://blog.appicaptor.com/2019/10/04/vulnerable-library-warning-twitterkit-for-ios/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2019-16263?
CVE-2019-16263 has been scored as a high severity vulnerability.
How to fix CVE-2019-16263?
To fix CVE-2019-16263, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-16263 being actively exploited in the wild?
It is possible that CVE-2019-16263 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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