Apple · Security Update 2018-001 El Capitan · CVE-2017-13889
**Name of the Vulnerable Software and Affected Versions**
macOS High Sierra versions prior to 10.13.3
Security Update 2018-001 Sierra (affected versions not specified)
Security Update 2018-001 El Capitan (affected versions not specified)
**Description**
A logic error existed in the validation of credentials. This issue was addressed with improved credential validation.
**Recommendations**
For macOS High Sierra versions prior to 10.13.3, update to version 10.13.3 or later to resolve the issue.
For Security Update 2018-001 Sierra and Security Update 2018-001 El Capitan, at the moment, there is no information about a newer version that contains a fix for this vulnerability.