Auth bypass in Sysaid Itil
CVE-2021-43974
An issue was discovered in SysAid ITIL 20.4.74 b10. The /enduserreg endpoint is used to register end users anonymously, but does not respect the server-side setting that determines if anonymous users are allowed to register new accounts. Configuring the server-side setting to disable anonymous user registration only hides the client-side registration form. An attacker can still post registration data to create new accounts without prior authentication.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.014 (71.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 71.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000
Affected products
- Sysaid Itil — versions 20.4.74
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.sysaid.com/it-service-management-software/incident-management (Vendor Advisory)
- github.com/atredispartners/advisories/blob/master/ATREDIS-2021-0002.md (Third Party Advisory, Broken Link)
- github.com/atredispartners/advisories/blob/master/ATREDIS-2022-0001.md (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-43974?
- CVE-2021-43974 is a medium-severity vulnerability in Sysaid Itil, classified under Missing Authentication for Critical Function. CVSS score: 5.3/10. Published 2022-01-11.
- How severe is CVE-2021-43974?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2021-43974 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.