Summary
3rd party vendors can (and sometimes do) incorrectly implement sts:ExternalId in their
AWS role trust policies, leading to confused deputy issues. These misconfigurations could
allow customers to access other customers' data. Although vendors are responsible for
ensuring their own configurations are correct, AWS could theoretically add mitigations
to prevent and detect this issue.
Affected Services
N/A
Remediation
Audit your vendor roles.
Tracked CVEs
No tracked CVEs
References
https://www.youtube.com/watch?v=8ZXRw4Ry3mQhttps://www.praetorian.com/blog/aws-iam-assume-role-vulnerabilities/
Contributed by https://github.com/0xdabbad00
Disclosure Date
Wed, Nov 16th, 2016
Exploitablity Period
ongoing
Known ITW Exploitation
-
Detection Methods
-
Piercing Index Rating
-
Discovered by
Daniel Grzelak, Atlassian
