Vulnerability · Published Sep 1, 2021 · Assigned by INCD
CVE-2021-37151
Medium 5.3
In plain English
A medium-severity security flaw in Identity from CyberArk. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 58% of all known vulnerabilities).
Official description
CyberArk Identity 21.5.131, when handling an invalid authentication attempt, sometimes reveals whether the username is valid. In certain authentication policy configurations with MFA, the API response length can be used to differentiate between a valid user and an invalid one (aka Username Enumeration). Response differentiation enables attackers to enumerate usernames of valid application users. Attackers can use this information to leverage brute-force and dictionary attacks in order to discover valid account information such as passwords.
Affected products (as reported)
References
- https://www.cyberark.com/products/ x_refsource_MISC
- https://www.gov.il/en/departments/faq/cve_advisories x_refsource_MISC