PT-2020-18836 · F5 · Big-Ip

Published 2020-10-29 · Updated 2020-11-09 · CVE-2020-5938

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions BIG-IP versions 11.6.1 through 11.6.5.2 BIG-IP versions 12.1.0 through 12.1.5.2 BIG-IP versions 13.1.0 through 13.1.3.4

Description The issue arises when negotiating IPSec tunnels with configured, authenticated peers. In this scenario, the peer may negotiate a different key length than the BIG-IP configuration would otherwise allow.

Recommendations For BIG-IP versions 11.6.1 through 11.6.5.2, update to a version outside of this range to resolve the issue. For BIG-IP versions 12.1.0 through 12.1.5.2, update to a version outside of this range to resolve the issue. For BIG-IP versions 13.1.0 through 13.1.3.4, update to a version outside of this range to resolve the issue.

Fix

Inadequate Encryption Strength

Weakness Enumeration

CWE-326

Related Identifiers

CVE-2020-5938

Affected Products

Big-Ip

References · 4

• https://osv.dev/vulnerability/CVE-2020-5938 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-5938 · Security Note
• https://support.f5.com/csp/article/K76610106 · Vendor Advisory
• https://t.me/cvenotify/5359 · Telegram Post