CVE-2018-5548

Name: CVE-2018-5548
Creator: NVD / NIST
Published: 2018-09-13T14:29:00.513+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.44%

Last modified Jun 17, 2026

CVE-2018-5548 is a vulnerability of currently unknown severity. On BIG-IP APM 11.6.0-11.6.3, an insecure AES ECB mode is used for orig_uri parameter in an undisclosed /vdesk link of APM virtual server configured with an access profile, allowing a malicious user to build a redirect URI value using different blocks of cipher texts.. EPSS estimates a 1.44% chance of exploitation in the next 30 days.

Description

On BIG-IP APM 11.6.0-11.6.3, an insecure AES ECB mode is used for orig_uri parameter in an undisclosed /vdesk link of APM virtual server configured with an access profile, allowing a malicious user to build a redirect URI value using different blocks of cipher texts.

Metrics

EPSS Probability

1.44%

69.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-601

Affected Software

Vendor	Product	Versions
F5	Big-Ip Access Policy Manager	>= 11.6.1, <= 11.6.3

References

http://sbudella.altervista.org/blog/20180911-cve-2018-5548.htmlExploit, Technical Description, Third Party Advisory
http://www.securityfocus.com/bid/105353Third Party Advisory, VDB Entry
https://support.f5.com/csp/article/K66171422Vendor Advisory
http://sbudella.altervista.org/blog/20180911-cve-2018-5548.htmlExploit, Technical Description, Third Party Advisory
http://www.securityfocus.com/bid/105353Third Party Advisory, VDB Entry
https://support.f5.com/csp/article/K66171422Vendor Advisory

Timeline

Published: Sep 13, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-5548?

How severe is CVE-2018-5548?

Severity scoring for CVE-2018-5548 is pending analysis. The EPSS model estimates a 1.44% probability of exploitation in the next 30 days.

How do I fix CVE-2018-5548?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-5548?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST