Vulnerability Details : CVE-2017-0911
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.
Vulnerability category: BypassGain privilege
Products affected by CVE-2017-0911
- Twitter » Twitter Kit » For Iphone OsVersions from including (>=) 3.0 and up to, including, (<=) 3.2.1cpe:2.3:a:twitter:twitter_kit:*:*:*:*:*:iphone_os:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-0911
0.10%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 40 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-0911
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.5
|
MEDIUM | AV:N/AC:L/Au:S/C:P/I:P/A:N |
8.0
|
4.9
|
NIST | |
|
5.4
|
MEDIUM | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N |
2.8
|
2.5
|
NIST |
CWE ids for CVE-2017-0911
-
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.Assigned by: nvd@nist.gov (Primary)
-
Security based on event locations are insecure and can be spoofed.Assigned by: support@hackerone.com (Secondary)
References for CVE-2017-0911
-
https://github.com/twitter/twitter-kit-ios/blob/b6eb49d149b056d826cbc4b53eaeb39a3ebd591e/TwitterKit/TwitterKit/TWTRTwitter.m#L411
twitter-kit-ios/TWTRTwitter.m at b6eb49d149b056d826cbc4b53eaeb39a3ebd591e · twitter-archive/twitter-kit-ios · GitHubPatch;Third Party Advisory
-
https://hackerone.com/reports/290229
Sign inPermissions Required;Third Party Advisory
-
https://github.com/twitter/twitter-kit-ios/blob/b6eb49d149b056d826cbc4b53eaeb39a3ebd591e/TwitterKit/TwitterKit/Social/Identity/TWTRMobileSSO.m#L71
twitter-kit-ios/TWTRMobileSSO.m at b6eb49d149b056d826cbc4b53eaeb39a3ebd591e · twitter-archive/twitter-kit-ios · GitHubPatch;Third Party Advisory
-
https://blog.twitter.com/developer/en_us/topics/tips/2018/vulnerability-in-twitter-kit-for-ios.html
Vulnerability in Twitter Kit for iOSThird Party Advisory
-
https://github.com/twitter/twitter-kit-ios/wiki/Changelog#322-november-28-2017
Changelog · twitter-archive/twitter-kit-ios Wiki · GitHubRelease Notes;Third Party Advisory
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