PT-2019-18259 · F5 · F5 Big-Ip

Published 2019-12-23 · Updated 2020-08-24 · CVE-2019-6677

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 versions 12.1.0 through 12.1.5 F5 BIG-IP versions 13.1.0 through 13.1.3.1 F5 BIG-IP versions 14.0.0 through 14.0.1 F5 BIG-IP versions 14.1.0 through 14.1.2 F5 BIG-IP versions 15.0.0 through 15.0.1

Description The issue occurs under certain conditions when using custom TCP congestion control settings in a TCP profile. This can cause TMM to stop processing traffic when processed by an iRule.

Recommendations For F5 BIG-IP versions 12.1.0 through 12.1.5, consider removing custom TCP congestion control settings from TCP profiles to prevent TMM from stopping traffic processing. For F5 BIG-IP versions 13.1.0 through 13.1.3.1, consider removing custom TCP congestion control settings from TCP profiles to prevent TMM from stopping traffic processing. For F5 BIG-IP versions 14.0.0 through 14.0.1, consider removing custom TCP congestion control settings from TCP profiles to prevent TMM from stopping traffic processing. For F5 BIG-IP versions 14.1.0 through 14.1.2, consider removing custom TCP congestion control settings from TCP profiles to prevent TMM from stopping traffic processing. For F5 BIG-IP versions 15.0.0 through 15.0.1, consider removing custom TCP congestion control settings from TCP profiles to prevent TMM from stopping traffic processing.

Fix

Related Identifiers

CVE-2019-6677

Affected Products

F5 Big-Ip

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2019-6677 · Security Note
• https://support.f5.com/csp/article/K06747393 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-6677 · Vendor Advisory