CVE-2019-20044

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

24/02/2020

Last modified:

07/11/2023

Description

In Zsh before 5.8, attackers able to execute commands can regain privileges dropped by the --no-PRIVILEGED option. Zsh fails to overwrite the saved uid, so the original privileges can be restored by executing MODULE_PATH=/dir/with/module zmodload with a module that calls setuid().

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

7.80

Severity 3.x

HIGH

Vector 2.0

AV:L/AC:L/Au:N/C:C/I:C/A:C CVSS v2.0 Severity and Metrics:

Base Score: 7.20 HIGH
Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Attack Vector (AV): Local
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete

Base Score 2.0

7.20

Severity 2.0

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:zsh:zsh::::::::		5.8 (excluding)
cpe:2.3:o:apple:macos:-:::::::*
cpe:2.3:o:linux:linux_kernel:-:::::::*
cpe:2.3:o:fedoraproject:fedora:30:::::::*
cpe:2.3:o:fedoraproject:fedora:31:::::::*
cpe:2.3:o:debian:debian_linux:8.0:::::::*
cpe:2.3:o:debian:debian_linux:9.0:::::::*
cpe:2.3:o:apple:ipados::::::::		13.5 (excluding)
cpe:2.3:o:apple:iphone_os::::::::		13.5 (excluding)
cpe:2.3:o:apple:mac_os_x::::::::		10.15.5 (excluding)
cpe:2.3:o:apple:mac_os_x::::::::	10.13.0 (including)	10.13.6 (excluding)
cpe:2.3:o:apple:mac_os_x::::::::	10.14.0 (including)	10.14.6 (excluding)
cpe:2.3:o:apple:mac_os_x::::::::	10.15 (including)	10.15.5 (excluding)
cpe:2.3:o:apple:mac_os_x:10.13.6:-::::::
cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2018-002::::::

To consult the complete list of CPE names with products and versions, see this page

CPE	From	Up to
cpe:2.3:a:zsh:zsh::::::::		5.8 (excluding)
cpe:2.3:o:apple:macos:-:::::::*
cpe:2.3:o:linux:linux_kernel:-:::::::*
cpe:2.3:o:fedoraproject:fedora:30:::::::*
cpe:2.3:o:fedoraproject:fedora:31:::::::*
cpe:2.3:o:debian:debian_linux:8.0:::::::*
cpe:2.3:o:debian:debian_linux:9.0:::::::*
cpe:2.3:o:apple:ipados::::::::		13.5 (excluding)
cpe:2.3:o:apple:iphone_os::::::::		13.5 (excluding)
cpe:2.3:o:apple:mac_os_x::::::::		10.15.5 (excluding)
cpe:2.3:o:apple:mac_os_x::::::::	10.13.0 (including)	10.13.6 (excluding)
cpe:2.3:o:apple:mac_os_x::::::::	10.14.0 (including)	10.14.6 (excluding)
cpe:2.3:o:apple:mac_os_x::::::::	10.15 (including)	10.15.5 (excluding)
cpe:2.3:o:apple:mac_os_x:10.13.6:-::::::
cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2018-002::::::

CVE-2019-20044

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools