PT-2020-2034 · F5 · Big-Ip

Published 2020-03-27 · Updated 2021-07-21 · CVE-2020-5859

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions F5 BIG-IP versions 15.1.0.1

Description The issue is related to the processing of specially formatted HTTP/3 messages, which may cause the Traffic Management Microkernel (TMM) to produce a core file. This is also associated with errors in handling input data by the BIG-IP Access Policy Manager, a tool for access control and remote authentication. Exploitation of this issue could allow a remote attacker to cause a denial of service.

Recommendations For version 15.1.0.1, consider disabling the handling of HTTP/3 messages until a patch is available to prevent TMM from producing a core file. Restrict access to the BIG-IP Access Policy Manager to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2020-01648

CVE-2020-5859

Affected Products

Big-Ip

References · 6

• https://support.f5.com/csp/article/K61367237 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-5859 · Security Note
• https://safe-surf.ru/upload/VULN/VULN-20200330.3.pdf · Security Note
• https://osv.dev/vulnerability/CVE-2020-5859 · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-01648 · Security Note
• https://t.me/cvenotify/2235 · Telegram Post