PT-2020-18777 · F5 · Big-Ip

Published 2020-04-30 · Updated 2021-07-21 · CVE-2020-5876

Positive Technologies (AI Summary)

CVSS v3.1

8.1

High

Base vector

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

Name of the Vulnerable Software and Affected Versions F5 BIG-IP versions 11.6.1 through 11.6.5.1 F5 BIG-IP versions 12.1.0 through 12.1.5.1 F5 BIG-IP versions 13.1.0 through 13.1.3.3 F5 BIG-IP versions 14.1.0 through 14.1.2.3 F5 BIG-IP versions 15.0.0 through 15.0.1.3

Description A race condition exists where mcpd and other processes may make unencrypted connection attempts to a new configuration sync peer. The race condition can occur when changing the ConfigSync IP address of a peer, adding a new peer, or when the Traffic Management Microkernel (TMM) first starts up.

Recommendations For F5 BIG-IP versions 11.6.1 through 11.6.5.1, update to a fixed version to resolve the issue. For F5 BIG-IP versions 12.1.0 through 12.1.5.1, update to a fixed version to resolve the issue. For F5 BIG-IP versions 13.1.0 through 13.1.3.3, update to a fixed version to resolve the issue. For F5 BIG-IP versions 14.1.0 through 14.1.2.3, update to a fixed version to resolve the issue. For F5 BIG-IP versions 15.0.0 through 15.0.1.3, update to a fixed version to resolve the issue.

Fix

Cleartext Transmission of Sensitive Information

Race Condition

Weakness Enumeration

CWE-319

CWE-362

Related Identifiers

CVE-2020-5876

Affected Products

Big-Ip

References · 4

• https://osv.dev/vulnerability/CVE-2020-5876 · Vendor Advisory
• https://support.f5.com/csp/article/K32121038 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-5876 · Security Note
• https://t.me/cvenotify/3463 · Telegram Post