PT-2020-19588 · Freebsd · Freebsd

Ilja Van Sprundel · Published 2020-03-19 · Updated 2022-07-12 · CVE-2020-7452

Positive Technologies (AI Summary)

CVSS v3.1

9.1

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions FreeBSD versions 12.1-STABLE before r357490 FreeBSD versions 12.1-RELEASE before 12.1-RELEASE-p3 FreeBSD versions 11.3-STABLE before r357489 FreeBSD versions 11.3-RELEASE before 11.3-RELEASE-p7

Description The issue is related to the incorrect use of a user-controlled pointer in the epair virtual network module. This allowed vnet jailed privileged users to panic the host system and potentially execute arbitrary code in the kernel.

Recommendations For FreeBSD versions 12.1-STABLE before r357490, update to a version after r357490 to resolve the issue. For FreeBSD versions 12.1-RELEASE before 12.1-RELEASE-p3, update to 12.1-RELEASE-p3 or later to resolve the issue. For FreeBSD versions 11.3-STABLE before r357489, update to a version after r357489 to resolve the issue. For FreeBSD versions 11.3-RELEASE before 11.3-RELEASE-p7, update to 11.3-RELEASE-p7 or later to resolve the issue.

Fix

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

CVE-2020-7452

FREEBSD-SA-20_07

Affected Products

Freebsd

References · 5

• https://security.freebsd.org/advisories/FreeBSD-SA-20:07.epair.asc · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-7452 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-7452 · Security Note
• https://freebsd.org/security/advisories/FreeBSD-SA-20:07.epair.asc · Note
• https://t.me/cvenotify/3367 · Telegram Post