cbcvebase.
CVE-2019-17382
published 2019-10-09

CVE-2019-17382: An issue was discovered in zabbix.php?action=dashboard.view&dashboardid=1 in Zabbix through 4.4. An attacker can bypass the login page and access the dashboard…

PriorityP273critical9.1CVSS 3.1
AVNACLPRNUINSUCHIHAN
EXPLOIT
EPSS
54.15%
98.9th percentile
An issue was discovered in zabbix.php?action=dashboard.view&dashboardid=1 in Zabbix through 4.4. An attacker can bypass the login page and access the dashboard page, and then create a Dashboard, Report, Screen, or Map without any Username/Password (i.e., anonymously). All created elements (Dashboard/Report/Screen/Map) are accessible by other users and by an admin.

Affected

6 ranges
VendorProductVersion rangeFixed in
debianzabbix< zabbix 1:5.0.0+dfsg-1 (bookworm)zabbix 1:5.0.0+dfsg-1 (bookworm)
zabbixzabbix<= 4.4
zabbixzabbix>= 0 < 1:5.0.0+dfsg-11:5.0.0+dfsg-1
zabbixzabbix>= 0 < 1:5.0.0+dfsg-11:5.0.0+dfsg-1
zabbixzabbix>= 0 < 1:5.0.0+dfsg-11:5.0.0+dfsg-1
zabbixzabbix>= 0 < 1:5.0.0+dfsg-11:5.0.0+dfsg-1

Detection & IOCsextracted from sources · hover to see the quote

urlzabbix.php?action=dashboard.view&dashboardid=1
url/zabbix.php?action=dashboard.view&dashboardid={{ids}}
path/zabbix/zabbix.php?action=dashboard.list
otherhttp.favicon.hash:892542951
othericon_hash=892542951
  • Unauthenticated GET request to zabbix.php with action=dashboard.view and a dashboardid parameter returns HTTP 200 with 'Dashboard' in the body — indicates successful auth bypass exploitation.
  • Detect Zabbix instances by matching response body for any of: 'warning [refreshed every', 'zabbix-logo', or 'content="zabbix sia' — used as a pre-check before attempting the auth bypass.
  • Shodan query to identify exposed Zabbix servers by favicon hash for targeting/detection.
  • FOFA query to identify Zabbix servers with SAML enabled, which may be targeted for this auth bypass.
  • Google dork to identify exposed Zabbix servers.
  • The exploit chains the auth bypass (CVE-2019-17382) with a Stored XSS via the Map Navigation Tree widget 'Name' parameter on the dashboard — monitor for unauthenticated POST requests to dashboard creation endpoints.
  • ·The vulnerability is considered 'not a bug' by Zabbix upstream — it is resolved by disabling the guest account rather than a code patch. Ensure guest/anonymous access is disabled in Zabbix configuration.
  • ·The nuclei template uses a clusterbomb attack iterating dashboardid values from a numbers wordlist, meaning detection rules should account for sequential numeric dashboardid enumeration in unauthenticated requests.

CVSS provenance

nvdv3.19.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
nvdv2.06.4MEDIUMAV:N/AC:L/Au:N/C:P/I:P/A:N
osv9.1CRITICAL
vendor_debian9.1CRITICAL
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