Home/CVE/F5 BIG-IP Configuration Utility Authentication Bypass Vulnerability
CVE

CVE-2023-46747

F5 BIG-IP Configuration Utility Authentication Bypass Vulnerability

Undisclosed requests may bypass configuration utility authentication, allowing an attacker with network access to the BIG-IP system through the management port and/or self IP addresses to execute arbitrary system commands. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CRITICAL · CVSS 9.8 ⚠ CISA KEV EPSS 0.94436 Ransomware: known
Act now
  • Listed on CISA KEV (known exploited in the wild)
  • Linked to known ransomware campaigns
  • SSVC exploitation status: active
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 0% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules10 YARA rules0
⬢

Required Remediation

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

◆

Threat Actors Linked

2
actorTAG-100
actorVelvet Ant
⬡

Weakness Classification

CWE-288Authentication Bypass Using an Alternate Path or Channel
CWE-306Missing Authentication for Critical Function
▤

Affected Products & Versions

60
f5 big-ip access policy manager>= 13.1.0 and <= 13.1.5
f5 big-ip access policy manager>= 14.1.0 and <= 14.1.5
f5 big-ip access policy manager>= 15.1.0 and <= 15.1.10
f5 big-ip access policy manager>= 16.1.0 and <= 16.1.4
f5 big-ip access policy manager>= 17.1.0 and <= 17.1.1
f5 big-ip advanced firewall manager>= 13.1.0 and <= 13.1.5
f5 big-ip advanced firewall manager>= 14.1.0 and <= 14.1.5
f5 big-ip advanced firewall manager>= 15.1.0 and <= 15.1.10
⚠

Public Exploits & PoCs

3
nucleiF5 BIG-IP - Unauthenticated RCE via AJP Smugglingcritical
pocpacketstormsecurity.com · F5-BIG-IP-TMUI-AJP-Smuggling-Remote-Command-Execution.htmlpacketstormsecurity.com
pocwww.secpod.com · f5-issues-warning-big-ip-vulnerability-used-in-active-exp...www.secpod.com
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Detection Rules (IDS/IPS)

4
et-openET WEB_SPECIFIC_APPS Possible F5 BIG-IP AJP Request Smuggling Attempt (CVE-2023-46747)web-application-attack
et-openET EXPLOIT F5 BIG-IP - Unauthenticated RCE via AJP Smuggling Request - User Deletion (CVE-2023-46747)attempted-admin
et-openET EXPLOIT F5 BIG-IP - Unauthenticated RCE via AJP Smuggling Request - User Creation (CVE-2023-46747)attempted-admin
et-openET EXPLOIT F5 BIG-IP - Unauthenticated RCE via AJP Smuggling Request (CVE-2023-46747)attempted-admin
Open rulesets (ET Open, Snort Community, abuse.ch) link to source. Commercial rulesets are reference-only.
◈

Sigma Hunt Rules

10
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
relatedcriticalAntivirus Password Dumper Detection
relatedcriticalHacktool Execution - Imphash
relatedcriticalHackTool - Rubeus Execution
relatedcriticalPotential Credential Dumping Via LSASS Process Clone
relatedcriticalWCE wceaux.dll Access
relatedcriticalHackTool - Dumpert Process Dumper Default File
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · f5sirt@f5.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD26 Oct 2023 · 09:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
active
Automatable
yes
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

2
cisaKEV-CVE-2023-46747
splunk-security-content88bf127c-613e-4579-99e4-c4d4b02f3840
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-46747US Government Resource
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