Vulnerability CVE-2021-27927: Information
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.
Severity: HIGH (8.8) Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Fixed packages
Package name | Branch | Fixed in version | Version from repository | Errata ID | Task # | State |
|---|---|---|---|---|---|---|
| zabbix | sisyphus | 4.2.1-alt1 | 6.0.29-alt1 | ALT-PU-2019-1862-1 | 229639 | Fixed |
| zabbix | p10 | 4.2.1-alt1 | 6.0.29-alt0.p10.1 | ALT-PU-2019-1862-1 | 229639 | Fixed |
| zabbix | p9 | 4.4.4-alt0.p9.1 | 5.0.12-alt0.p9.1 | ALT-PU-2020-1083-1 | 244181 | Fixed |
| zabbix | p9_e2k | 5.0.12-alt0.p9.3 | 5.0.12-alt0.p9.3 | ALT-PU-2022-6601-1 | - | Fixed |
| zabbix | c10f1 | 4.2.1-alt1 | 6.0.27-alt0.c10f1.1 | ALT-PU-2019-1862-1 | 229639 | Fixed |
| zabbix | c9f2 | 4.4.4-alt0.p9.1 | 5.0.40-alt1 | ALT-PU-2020-1083-1 | 244181 | Fixed |
References to Advisories, Solutions, and Tools
Hyperlink | Resource |
|---|---|
| https://support.zabbix.com/browse/ZBX-18942 |
|
| [debian-lts-announce] 20230412 [SECURITY] [DLA 3390-1] zabbix security update |