CVE-2021-27927
medium
CVSS v3
—
CVSS v2
—
VIR risk
5.5
Description
In Zabbix from 4.0.x before 4.0.28rc1, 5.0.0alpha1 before 5.0.10rc1, 5.2.x before 5.2.6rc1, and 5.4.0alpha1 before 5.4.0beta2, the CControllerAuthenticationUpdate controller lacks a CSRF protection mechanism. The code inside this controller calls diableSIDValidation inside the init() method. An attacker doesn't have to know Zabbix user login credentials, but has to know the correct Zabbix URL and contact information of an existing user with sufficient privileges.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-27927
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 5.2.6-1 | |
| debian | bookworm | fixed | 1:5.0.8+dfsg-1 |
| debian | bullseye | fixed | 1:5.0.8+dfsg-1 |
| debian | forky | fixed | 1:5.0.8+dfsg-1 |
| debian | sid | fixed | 1:5.0.8+dfsg-1 |
| debian | trixie | fixed | 1:5.0.8+dfsg-1 |
References
Verify integrity in audit chain (admin only). AS-IS.