PT-2018-16994 · F5 · F5 Big-Ip

Published 2018-03-01 · Updated 2018-03-23 · CVE-2018-5500

Positive Technologies (AI Summary)

CVSS v3.1

5.9

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions F5 BIG-IP versions 11.6.1 through 11.6.2 F5 BIG-IP versions 12.1.0 through 12.1.3.1 F5 BIG-IP version 13.0.0

Description The issue affects F5 BIG-IP systems where every Multipath TCP (MCTCP) connection established leaks a small amount of memory. Virtual servers using a TCP profile with the Multipath TCP (MCTCP) feature enabled are affected by this issue.

Recommendations For F5 BIG-IP version 13.0.0, consider disabling the Multipath TCP (MCTCP) feature until a patch is available. For F5 BIG-IP versions 12.1.0 through 12.1.3.1, restrict the use of the TCP profile with the Multipath TCP (MCTCP) feature enabled to minimize the risk of exploitation. For F5 BIG-IP versions 11.6.1 through 11.6.2, avoid using the Multipath TCP (MCTCP) feature in virtual servers until the issue is resolved.

Fix

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

CVE-2018-5500

Affected Products

F5 Big-Ip

References · 4

• https://osv.dev/vulnerability/CVE-2018-5500 · Vendor Advisory
• https://support.f5.com/csp/article/K33211839 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-5500 · Security Note
• http://securityfocus.com/bid/103217 · Note