Denial of Service Vulnerability in F5 BIG-IP by Malicious Client Certificates
CVE-2018-5502

7.5HIGH

Key Information:

Vendor
F5
Status
Big-ip (ltm, Aam, Afm, Analytics, Apm, Asm, Dns, Edge Gateway, Gtm, Link Controller, Pem, Webaccelerator, Websafe)
Vendor
CVE Published:
22 March 2018

Summary

On certain versions of F5 BIG-IP, it is possible for attackers to disrupt services by utilizing specially crafted client certificates during authentication. This vulnerability primarily targets virtual servers linked to the Client SSL profile, which is designed for client certificate authentication. It's important to note that client certificate authentication is not activated by default within the Client SSL profile configuration. Despite this, administrators should remain vigilant and implement necessary security measures to mitigate any potential threats, given the exploitation risks associated with this vulnerability.

Affected Version(s)

BIG-IP (LTM, AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, GTM, Link Controller, PEM, WebAccelerator, WebSafe) 13.0.0 - 13.1.0.3

References

https://support.f5.com/csp/article/K43121447
x_refsource_CONFIRM
http://www.securitytracker.com/id/1040561
vdb-entryx_refsource_SECTRACK

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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