CyberSecBulletin
CVE-2022-23019NVD status: Modified

On BIG-IP version 16.1.x before 16.1.2, 15.1.x before 15.1.4.1, 14.1.x before 14.1.4.4, and…

Published Updated By the CyberSecBulletin desk

CVE-2022-23019 is a high-severity improper input validation vulnerability in BIG-IP, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. There is no confirmed exploitation so far. EPSS estimates a 0.92% chance of exploitation within 30 days, higher than 61% of scored CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update Big-ip Access Policy Manager to 14.1.4.4 or 15.1.4.1 or 16.1.2, whichever matches your release line, or a later version.
  2. Update Big-ip Advanced Firewall Manager to 14.1.4.4 or 15.1.4.1 or 16.1.2, whichever matches your release line, or a later version.
  3. Update Big-ip Analytics to 14.1.4.4 or 15.1.4.1 or 16.1.2, whichever matches your release line, or a later version.
  4. Read the advisory on support.f5.com for workarounds and exact fixed builds.
  5. Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.

Affected products and versions

VendorProductAffected versionsFixed in
BIG-IPBIG-IPNot specified in the recordNot stated
F5Big-ip Access Policy Manager12.1.0 through 12.1.6; 13.1.0 through 13.1.4; 14.1.0 up to, but not including, 14.1.4.4; 15.1.0 up to, but not including, 15.1.4.1; 16.1.0 up to, but not including, 16.1.214.1.4.4, 15.1.4.1, 16.1.2
F5Big-ip Advanced Firewall Manager12.1.0 through 12.1.6; 13.1.0 through 13.1.4; 14.1.0 up to, but not including, 14.1.4.4; 15.1.0 up to, but not including, 15.1.4.1; 16.1.0 up to, but not including, 16.1.214.1.4.4, 15.1.4.1, 16.1.2
F5Big-ip Analytics12.1.0 through 12.1.6; 13.1.0 through 13.1.4; 14.1.0 up to, but not including, 14.1.4.4; 15.1.0 up to, but not including, 15.1.4.1; 16.1.0 up to, but not including, 16.1.214.1.4.4, 15.1.4.1, 16.1.2
F5Big-ip Application Acceleration Manager12.1.0 through 12.1.6; 13.1.0 through 13.1.4; 14.1.0 up to, but not including, 14.1.4.4; 15.1.0 up to, but not including, 15.1.4.1; 16.1.0 up to, but not including, 16.1.214.1.4.4, 15.1.4.1, 16.1.2
F5Big-ip Application Security Manager12.1.0 through 12.1.6; 13.1.0 through 13.1.4; 14.1.0 up to, but not including, 14.1.4.4; 15.1.0 up to, but not including, 15.1.4.1; 16.1.0 up to, but not including, 16.1.214.1.4.4, 15.1.4.1, 16.1.2
F5Big-ip Domain Name System12.1.0 through 12.1.6; 13.1.0 through 13.1.4; 14.1.0 up to, but not including, 14.1.4.4; 15.1.0 up to, but not including, 15.1.4.1; 16.1.0 through 16.1.214.1.4.4, 15.1.4.1
F5Big-ip Fraud Protection Service12.1.0 through 12.1.6; 13.1.0 through 13.1.4; 14.1.0 up to, but not including, 14.1.4.4; 15.1.0 up to, but not including, 15.1.4.1; 16.1.0 up to, but not including, 16.1.214.1.4.4, 15.1.4.1, 16.1.2
F5Big-ip Global Traffic Manager12.1.0 through 12.1.6; 13.1.0 through 13.1.4; 14.1.0 up to, but not including, 14.1.4.4; 15.1.0 up to, but not including, 15.1.4.1; 16.1.0 through 16.1.214.1.4.4, 15.1.4.1
F5Big-ip Link Controller12.1.0 through 12.1.6; 13.1.0 through 13.1.4; 14.1.0 up to, but not including, 14.1.4.4; 15.1.0 up to, but not including, 15.1.4.1; 16.1.0 up to, but not including, 16.1.214.1.4.4, 15.1.4.1, 16.1.2
F5Big-ip Local Traffic Manager12.1.0 through 12.1.6; 13.1.0 through 13.1.4; 14.1.0 up to, but not including, 14.1.4.4; 15.1.0 up to, but not including, 15.1.4.1; 16.1.0 up to, but not including, 16.1.214.1.4.4, 15.1.4.1, 16.1.2
F5Big-ip Policy Enforcement Manager12.1.0 through 12.1.6; 13.1.0 through 13.1.4; 14.1.0 up to, but not including, 14.1.4.4; 15.1.0 up to, but not including, 15.1.4.1; 16.1.0 up to, but not including, 16.1.214.1.4.4, 15.1.4.1, 16.1.2

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
NoneNo account or login is needed.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
NoneNo data is disclosed.
Integrity
NoneNothing can be modified.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. Scored by NVD.

Scoring systemScoreSeverityScored by
CVSS 3.17.5HighNVD
CVSS 2.07.1HighNVD

Official description

On BIG-IP version 16.1.x before 16.1.2, 15.1.x before 15.1.4.1, 14.1.x before 14.1.4.4, and all versions of 13.1.x and 12.1.x, when a message routing type virtual server is configured with both Diameter Session and Router Profiles, undisclosed traffic can cause an increase in memory resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

How developers prevent this class of flaw

  • Consider using language-theoretic security (LangSec) techniques that characterize inputs using a formal language and build recognizers for that language. This effectively requires parsing to be a distinct layer that effectively enforces a boundary between raw input and internal data representations, instead of allowing parser code to be scattered throughout the program, where it could be subject to errors or inconsistencies that create weaknesses.
  • Use an input validation framework such as Struts or the OWASP ESAPI Validation API. Note that using a framework does not automatically address all input validation problems; be mindful of weaknesses that could arise from misusing the framework itself (CWE-1173).
  • Understand all the potential areas where untrusted inputs can enter the product, including but not limited to: parameters or arguments, cookies, anything read from the network, environment variables, reverse DNS lookups, query results, request headers, URL components, e-mail, files, filenames, databases, and any external systems that provide data to the application. Remember that such inputs may be obtained indirectly through API calls.

More Improper Input Validation vulnerabilities (CWE-20)

Timeline

  1. CVE record published.
  2. Record last changed materially (score, affected products, status or references).

References

Other vulnerabilities in BIG-IP

All BIG-IP vulnerabilities

Recent Improper Input Validation vulnerabilities

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