On BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, and 12.1.x before 12.1.5.3 amd BIG-IQ 7.1.0.x before 7.1.0.3 and 7.0.0.x before 7.0.0.2, the iControl REST interface has an unauthenticated remote command execution vulnerability. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.
Published 2021-03-31 15:15:15
Updated 2022-07-12 17:42:04
Source F5 Networks
View at NVD,   CVE.org
Vulnerability category: Server-side request forgery (SSRF)

CVE-2021-22986 is in the CISA Known Exploited Vulnerabilities Catalog

This issue is known to have been leveraged as part of a ransomware campaign.
CISA vulnerability name:
F5 BIG-IP and BIG-IQ Centralized Management iControl REST Remote Code Execution Vulnerability
CISA required action:
Apply updates per vendor instructions.
CISA description:
F5 BIG-IP and BIG-IQ Centralized Management contain a remote code execution vulnerability in the iControl REST interface that allows unauthenticated attackers with network access to execute system commands, create or delete files, and disable services.
Added on 2021-11-03 Action due date 2021-11-17

Exploit prediction scoring system (EPSS) score for CVE-2021-22986

Probability of exploitation activity in the next 30 days: 97.45%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 100 % EPSS Score History EPSS FAQ

Metasploit modules for CVE-2021-22986

  • F5 iControl REST Unauthenticated SSRF Token Generation RCE
    Disclosure Date: 2021-03-10
    First seen: 2021-04-01
    exploit/linux/http/f5_icontrol_rest_ssrf_rce
    This module exploits a pre-auth SSRF in the F5 iControl REST API's /mgmt/shared/authn/login endpoint to generate an X-F5-Auth-Token that can be used to execute root commands on an affected BIG-IP or BIG-IQ device. This vulnerability is known as CVE-2021-22986

CVSS scores for CVE-2021-22986

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source
10.0
HIGH AV:N/AC:L/Au:N/C:C/I:C/A:C
10.0
10.0
NIST
9.8
CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.9
5.9
NIST

CWE ids for CVE-2021-22986

  • The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-22986

Products affected by CVE-2021-22986

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