CVE-2019-20044

Published: Feb 24, 2020Modified: Nov 21, 2024

7.8

Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability: 1.8 / Impact: 5.9

Source: NVD

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().

Affected (34)

Products: Zsh: Zsh · Fedoraproject: Fedora · Debian: Debian Linux · +1 more

Show all products

Zsh: Zsh · Fedoraproject: Fedora · Debian: Debian Linux · Apple: Ipados, Iphone Os, Mac Os X, Tvos, Watchos

1 product

1 product

1 product

5 products

Configuration A

1 vulnerable · 2 platform

Vulnerable Software	Affected Versions
Zsh Zsh	Before 5.8

Running on/with	Platform Versions
Apple Macos	All versions
Linux Linux Kernel	All versions

Configuration B

2 vulnerable

Vulnerable Software	Affected Versions
Fedoraproject Fedora	Version 30
Fedoraproject Fedora	Version 31

Configuration C

2 vulnerable

Vulnerable Software	Affected Versions
Debian Debian Linux	Version 8.0
Debian Debian Linux	Version 9.0

Configuration D

29 vulnerable

Vulnerable Software	Affected Versions
Apple Ipados	Before 13.5
Apple Iphone Os	Before 13.5
Apple Mac Os X	Before 10.15.5
Apple Mac Os X	From 10.13.0 to 10.13.6
Apple Mac Os X	From 10.14.0 to 10.14.6
Apple Mac Os X	From 10.15 to 10.15.5
Apple Mac Os X	Version 10.13.6
Apple Mac Os X	Version 10.13.6 security_update_2018-002
Apple Mac Os X	Version 10.13.6 security_update_2018-003
Apple Mac Os X	Version 10.13.6 security_update_2019-001
Apple Mac Os X	Version 10.13.6 security_update_2019-002
Apple Mac Os X	Version 10.13.6 security_update_2019-003
Apple Mac Os X	Version 10.13.6 security_update_2019-004
Apple Mac Os X	Version 10.13.6 security_update_2019-005
Apple Mac Os X	Version 10.13.6 security_update_2019-006
Apple Mac Os X	Version 10.13.6 security_update_2019-007
Apple Mac Os X	Version 10.13.6 security_update_2020-001
Apple Mac Os X	Version 10.13.6 security_update_2020-002
Apple Mac Os X	Version 10.14.6
Apple Mac Os X	Version 10.14.6 security_update_2019-001
Apple Mac Os X	Version 10.14.6 security_update_2019-002
Apple Mac Os X	Version 10.14.6 security_update_2019-004
Apple Mac Os X	Version 10.14.6 security_update_2019-005
Apple Mac Os X	Version 10.14.6 security_update_2019-006
Apple Mac Os X	Version 10.14.6 security_update_2019-007
Apple Mac Os X	Version 10.14.6 security_update_2020-001
Apple Mac Os X	Version 10.14.6 security_update_2020-002
Apple Tvos	Before 13.4.5
Apple Watchos	Before 6.2.5

Related CWEs

CWE-273

Improper Check for Dropped Privileges

The product attempts to drop privileges but does not check or incorrectly checks to see if the drop succeeded.

References (40)

http://seclists.org/fulldisclosure/2020/May/49

Source: cve@mitre.org

Mailing ListThird Party Advisory

http://seclists.org/fulldisclosure/2020/May/53

Source: cve@mitre.org

Mailing ListThird Party Advisory

http://seclists.org/fulldisclosure/2020/May/55

Source: cve@mitre.org

Mailing ListThird Party Advisory

http://seclists.org/fulldisclosure/2020/May/59

Source: cve@mitre.org

Mailing ListThird Party Advisory

http://zsh.sourceforge.net/releases.html

Source: cve@mitre.org

Release NotesThird Party Advisory

https://github.com/XMB5/zsh-privileged-upgrade

Source: cve@mitre.org

Broken Link

https://lists.debian.org/debian-lts-announce/2020/03/msg00004.html

Source: cve@mitre.org

Mailing ListThird Party Advisory

https://lists.debian.org/debian-lts-announce/2020/12/msg00000.html

Source: cve@mitre.org

Mailing ListThird Party Advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FP64FFIZI2CKQOEAOI5A72PVQULE7ZZC/

Source: cve@mitre.org

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PN5V7MPHRRP7QNHOEK56S7QGRU53WUN6/

Source: cve@mitre.org

https://security.gentoo.org/glsa/202003-55

Source: cve@mitre.org

Third Party Advisory

https://support.apple.com/HT211168

Source: cve@mitre.org

Third Party Advisory

https://support.apple.com/HT211170

Source: cve@mitre.org

Third Party Advisory

https://support.apple.com/HT211171

Source: cve@mitre.org

Third Party Advisory

https://support.apple.com/HT211175

Source: cve@mitre.org

Third Party Advisory

https://support.apple.com/kb/HT211168

Source: cve@mitre.org

Third Party Advisory

https://support.apple.com/kb/HT211170

Source: cve@mitre.org

Third Party Advisory

https://support.apple.com/kb/HT211171

Source: cve@mitre.org

Third Party Advisory

https://support.apple.com/kb/HT211175

Source: cve@mitre.org

Third Party Advisory

https://www.zsh.org/mla/zsh-announce/141

Source: cve@mitre.org

Release NotesVendor Advisory

http://seclists.org/fulldisclosure/2020/May/49