High severity7.8NVD Advisory· Published Feb 24, 2020· Updated Jun 17, 2026

CVE-2019-20044

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().

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Zsh/Zsh2 versions
cpe:2.3:a:zsh:zsh:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:zsh:zsh:*:*:*:*:*:*:*:*range: <5.8
- (no CPE)range: <5.8
Apple Inc./Ipados
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
Range: <13.5
Apple Inc./Iphone OS
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
Range: <13.5
Apple Inc./Mac OS X22 versions
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*+ 21 more
- cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*range: <10.15.5
- 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:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2018-003:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2019-001:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2019-002:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2019-003:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2019-004:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2019-005:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2019-006:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2019-007:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2020-001:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2020-002:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.14.6:-:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-001:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-002:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-004:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-005:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-006:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-007:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-001:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-002:*:*:*:*:*:*
Apple Inc./tvOS
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
Range: <13.4.5
Apple Inc./watchOS
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
Range: <6.2.5
Debian/linux2 versions
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Fedoraproject/Fedora2 versions
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
Zsh/Zshdescription
osv-coords39 versions
pkg:rpm/almalinux/zsh-html pkg:rpm/opensuse/zsh&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/zsh&distro=openSUSE%20Tumbleweed pkg:rpm/suse/zsh&distro=HPE%20Helion%20OpenStack%208 pkg:rpm/suse/zsh&distro=SUSE%20Enterprise%20Storage%206 pkg:rpm/suse/zsh&distro=SUSE%20Enterprise%20Storage%207 pkg:rpm/suse/zsh&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOS pkg:rpm/suse/zsh&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSS pkg:rpm/suse/zsh&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-ESPOS pkg:rpm/suse/zsh&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSS pkg:rpm/suse/zsh&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOS pkg:rpm/suse/zsh&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSS pkg:rpm/suse/zsh&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3 pkg:rpm/suse/zsh&distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3 pkg:rpm/suse/zsh&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2015%20SP2 pkg:rpm/suse/zsh&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSS pkg:rpm/suse/zsh&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCL pkg:rpm/suse/zsh&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCL pkg:rpm/suse/zsh&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSS pkg:rpm/suse/zsh&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSS pkg:rpm/suse/zsh&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5 pkg:rpm/suse/zsh&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCL pkg:rpm/suse/zsh&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSS pkg:rpm/suse/zsh&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-BCL pkg:rpm/suse/zsh&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSS pkg:rpm/suse/zsh&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSS pkg:rpm/suse/zsh&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3 pkg:rpm/suse/zsh&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4 pkg:rpm/suse/zsh&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5 pkg:rpm/suse/zsh&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015 pkg:rpm/suse/zsh&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1 pkg:rpm/suse/zsh&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2 pkg:rpm/suse/zsh&distro=SUSE%20Manager%20Proxy%204.1 pkg:rpm/suse/zsh&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.1 pkg:rpm/suse/zsh&distro=SUSE%20Manager%20Server%204.1 pkg:rpm/suse/zsh&distro=SUSE%20OpenStack%20Cloud%208 pkg:rpm/suse/zsh&distro=SUSE%20OpenStack%20Cloud%209 pkg:rpm/suse/zsh&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208 pkg:rpm/suse/zsh&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209
< 5.5.1-6.el8_1.2+ 38 more
- (no CPE)range: < 5.5.1-6.el8_1.2
- (no CPE)range: < 5.6-7.5.1
- (no CPE)range: < 5.8-7.7
- (no CPE)range: < 5.0.5-6.19.1
- (no CPE)range: < 5.6-7.5.1
- (no CPE)range: < 5.6-7.5.1
- (no CPE)range: < 5.6-7.5.1
- (no CPE)range: < 5.6-7.5.1
- (no CPE)range: < 5.6-7.5.1
- (no CPE)range: < 5.6-7.5.1
- (no CPE)range: < 5.6-3.11.1
- (no CPE)range: < 5.6-3.11.1
- (no CPE)range: < 5.6-7.5.1
- (no CPE)range: < 4.3.6-67.9.8.1
- (no CPE)range: < 5.6-7.5.1
- (no CPE)range: < 4.3.6-67.9.8.1
- (no CPE)range: < 5.0.5-6.19.1
- (no CPE)range: < 5.0.5-6.19.1
- (no CPE)range: < 5.0.5-6.19.1
- (no CPE)range: < 5.0.5-6.19.1
- (no CPE)range: < 5.0.5-6.19.1
- (no CPE)range: < 5.6-7.5.1
- (no CPE)range: < 5.6-7.5.1
- (no CPE)range: < 5.6-7.5.1
- (no CPE)range: < 5.6-7.5.1
- (no CPE)range: < 5.6-3.11.1
- (no CPE)range: < 5.0.5-6.19.1
- (no CPE)range: < 5.0.5-6.19.1
- (no CPE)range: < 5.0.5-6.19.1
- (no CPE)range: < 5.6-3.11.1
- (no CPE)range: < 5.6-7.5.1
- (no CPE)range: < 5.6-7.5.1
- (no CPE)range: < 5.6-7.5.1
- (no CPE)range: < 5.6-7.5.1
- (no CPE)range: < 5.6-7.5.1
- (no CPE)range: < 5.0.5-6.19.1
- (no CPE)range: < 5.0.5-6.19.1
- (no CPE)range: < 5.0.5-6.19.1
- (no CPE)range: < 5.0.5-6.19.1

Patches

Vulnerability mechanics

References

seclists.org/fulldisclosure/2020/May/49nvdMailing ListThird Party Advisory
seclists.org/fulldisclosure/2020/May/53nvdMailing ListThird Party Advisory
seclists.org/fulldisclosure/2020/May/55nvdMailing ListThird Party Advisory
seclists.org/fulldisclosure/2020/May/59nvdMailing ListThird Party Advisory
zsh.sourceforge.net/releases.htmlnvdRelease NotesThird Party Advisory
lists.debian.org/debian-lts-announce/2020/03/msg00004.htmlnvdMailing ListThird Party Advisory
lists.debian.org/debian-lts-announce/2020/12/msg00000.htmlnvdMailing ListThird Party Advisory
security.gentoo.org/glsa/202003-55nvdThird Party Advisory
support.apple.com/HT211168nvdThird Party Advisory
support.apple.com/HT211170nvdThird Party Advisory
support.apple.com/HT211171nvdThird Party Advisory
support.apple.com/HT211175nvdThird Party Advisory
support.apple.com/kb/HT211168nvdThird Party Advisory
support.apple.com/kb/HT211170nvdThird Party Advisory
support.apple.com/kb/HT211171nvdThird Party Advisory
support.apple.com/kb/HT211175nvdThird Party Advisory
www.zsh.org/mla/zsh-announce/141nvdRelease NotesVendor Advisory
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FP64FFIZI2CKQOEAOI5A72PVQULE7ZZC/nvd
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PN5V7MPHRRP7QNHOEK56S7QGRU53WUN6/nvd

News mentions

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