CVE-2019-20044
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
02 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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.49% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 42.2% of scored records. A rank, not a probability.
- NVD base score
- 7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2020-02-24 13:09Z6 YR AGO
- Last updated
- 2024-08-05 02:32Z2 YR AGO
- Reserved
- 2019-12-27
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- ae89831eb0a023742fbef2045bedd9e7521139b135c554d54d0aa5af14b6d184
05 Affected products
06 References
- zsh.sourceforge.nethttp://zsh.sourceforge.net/releases.html
- github.comhttps://github.com/XMB5/zsh-privileged-upgrade
- www.zsh.orghttps://www.zsh.org/mla/zsh-announce/141
- lists.debian.org[debian-lts-announce] 20200302 [SECURITY] [DLA 2117-1] zsh security updatehttps://lists.debian.org/debian-lts-announce/2020/03/msg00004.html
- lists.fedoraproject.orgFEDORA-2020-3f38f3e517https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FP64FFIZI2CKQOEAOI5A72PVQULE7ZZC/
- lists.fedoraproject.orgFEDORA-2020-9009363f0fhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PN5V7MPHRRP7QNHOEK56S7QGRU53WUN6/
- security.gentoo.orgGLSA-202003-55https://security.gentoo.org/glsa/202003-55
- support.apple.comhttps://support.apple.com/kb/HT211170
- support.apple.comhttps://support.apple.com/kb/HT211175
- support.apple.comhttps://support.apple.com/kb/HT211171
- support.apple.comhttps://support.apple.com/kb/HT211168
- seclists.org20200529 APPLE-SA-2020-05-26-1 iOS 13.5 and iPadOS 13.5http://seclists.org/fulldisclosure/2020/May/49
- seclists.org20200529 APPLE-SA-2020-05-26-5 watchOS 6.2.5http://seclists.org/fulldisclosure/2020/May/55
- seclists.org20200529 APPLE-SA-2020-05-26-3 macOS Catalina 10.15.5, Security Update 2020-003 Mojave, Security Update 2020-003 High Sierrahttp://seclists.org/fulldisclosure/2020/May/53
- seclists.org20200529 APPLE-SA-2020-05-26-4 tvOS 13.4.5http://seclists.org/fulldisclosure/2020/May/59
- support.apple.comhttps://support.apple.com/HT211168
- support.apple.comhttps://support.apple.com/HT211170
- support.apple.comhttps://support.apple.com/HT211171
- support.apple.comhttps://support.apple.com/HT211175
- lists.debian.org[debian-lts-announce] 20201201 [SECURITY] [DLA 2470-1] zsh security updatehttps://lists.debian.org/debian-lts-announce/2020/12/msg00000.html
07 Fixed in
AlmaLinux 8
- zsh-html Fixed in 5.5.1-6.el8_1.2
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 8
- zsh-html Fixed in 5.5.1-6.el8_1.2
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 12
- zsh Fixed in 5.8-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- zsh Fixed in 5.8-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- zsh Fixed in 5.8-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- zsh Fixed in 5.4.2-3ubuntu3.2
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- zsh No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 16.04 LTS
- zsh Fixed in 5.1.1-1ubuntu2.3+esm1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.