PT-2021-11159 · Freebsd · Freebsd

Mateusz Guzik · Published 2021-02-24 · Updated 2022-07-12 · CVE-2020-25582

Positive Technologies (AI Summary)

CVSS v3.1

8.7

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: FreeBSD versions 12.2-STABLE before r369334 FreeBSD versions 11.4-STABLE before r369335 FreeBSD versions 12.2-RELEASE before p4 FreeBSD versions 11.4-RELEASE before p8

Description: The issue occurs when a process, such as jexec(8) or killall(1), calls jail attach(2) to enter a jail. In this scenario, the jailed root can attach to it using ptrace(2) before the current working directory is changed.

Recommendations: For FreeBSD versions 12.2-STABLE before r369334, update to a version after r369334. For FreeBSD versions 11.4-STABLE before r369335, update to a version after r369335. For FreeBSD versions 12.2-RELEASE before p4, update to a version after p4. For FreeBSD versions 11.4-RELEASE before p8, update to a version after p8.

Fix

Race Condition

Weakness Enumeration

CWE-362

Related Identifiers

CVE-2020-25582

FREEBSD-SA-21_05

Affected Products

Freebsd

References · 7

• https://security.freebsd.org/advisories/FreeBSD-SA-21:05.jail_chdir.asc · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-25582 · Security Note
• https://osv.dev/vulnerability/CVE-2020-25582 · Vendor Advisory
• https://freebsd.org/security/advisories/FreeBSD-SA-21:05.jail_chdir.asc · Note
• https://t.me/cvenotify/13573 · Telegram Post
• https://t.me/cvenotify/12130 · Telegram Post
• https://security.netapp.com/advisory/ntap-20210423-0003 · Note