CVE Vulnerabilities

CVE-2020-13776

Improper Privilege Management

Published: Jun 03, 2020 | Modified: Nov 07, 2023
CVSS 3.x
6.7
MEDIUM
Source:
NVD
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
CVSS 2.x
6.2 MEDIUM
AV:L/AC:H/Au:N/C:C/I:C/A:C
RedHat/V2
RedHat/V3
6.7 MODERATE
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Ubuntu
LOW

systemd through v245 mishandles numerical usernames such as ones composed of decimal digits or 0x followed by hex digits, as demonstrated by use of root privileges when privileges of the 0x0 user account were intended. NOTE: this issue exists because of an incomplete fix for CVE-2017-1000082.

Weakness

The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

Affected Software

Name Vendor Start Version End Version
Systemd Systemd_project * 245 (including)
Red Hat Enterprise Linux 8 RedHat systemd-0:239-45.el8 *
Red Hat Enterprise Linux 8.2 Extended Update Support RedHat systemd-0:239-31.el8_2.7 *
Systemd Ubuntu bionic *
Systemd Ubuntu eoan *
Systemd Ubuntu esm-infra-legacy/trusty *
Systemd Ubuntu esm-infra/bionic *
Systemd Ubuntu esm-infra/xenial *
Systemd Ubuntu focal *
Systemd Ubuntu trusty *
Systemd Ubuntu trusty/esm *
Systemd Ubuntu upstream *
Systemd Ubuntu xenial *

Potential Mitigations

References