PT-2017-16910 · F5 · F5 Big-Ip

Published 2017-12-21 · Updated 2018-01-05 · CVE-2017-6138

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions F5 BIG-IP software versions 12.1.0 through 12.1.2 F5 BIG-IP software version 13.0.0

Description The issue allows malicious requests made to virtual servers with an HTTP profile to cause the TMM to restart. This is exposed with BIG-IP APM profiles, regardless of settings, and with the non-default "normalize URI" configuration options used in iRules and/or BIG-IP LTM policies.

Recommendations For F5 BIG-IP software versions 12.1.0 through 12.1.2, consider disabling the HTTP profile on virtual servers until a patch is available. For F5 BIG-IP software version 13.0.0, consider disabling the HTTP profile on virtual servers until a patch is available. As a temporary workaround, consider restricting the use of BIG-IP APM profiles and the non-default "normalize URI" configuration options in iRules and/or BIG-IP LTM policies to minimize the risk of exploitation.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2017-6138

Affected Products

F5 Big-Ip

References · 4

• https://support.f5.com/csp/article/K34514540 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2017-6138 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-6138 · Security Note
• http://securitytracker.com/id/1040051 · Note