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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…
High7.8EPSS 0.50%
- Published
- Updated
- Reserved
- Assigned by
- mitre
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().
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.50% · top 57% of all CVEs (6 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
n/a
- affected n/a
References (20)
- http://zsh.sourceforge.net/releases.html (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/XMB5/zsh-privileged-upgrade (opens in a new tab)x_refsource_MISCx_transferred
- https://www.zsh.org/mla/zsh-announce/141 (opens in a new tab)x_refsource_MISCx_transferred
- [debian-lts-announce] 20200302 [SECURITY] [DLA 2117-1] zsh security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- FEDORA-2020-3f38f3e517 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FEDORA-2020-9009363f0f (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- GLSA-202003-55 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- https://support.apple.com/kb/HT211170 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://support.apple.com/kb/HT211175 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://support.apple.com/kb/HT211171 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://support.apple.com/kb/HT211168 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 20200529 APPLE-SA-2020-05-26-1 iOS 13.5 and iPadOS 13.5 (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- 20200529 APPLE-SA-2020-05-26-5 watchOS 6.2.5 (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- 20200529 APPLE-SA-2020-05-26-3 macOS Catalina 10.15.5, Security Update 2020-003 Mojave, Security Update 2020-003 High Sierra (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- 20200529 APPLE-SA-2020-05-26-4 tvOS 13.4.5 (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- https://support.apple.com/HT211168 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://support.apple.com/HT211170 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://support.apple.com/HT211171 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://support.apple.com/HT211175 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [debian-lts-announce] 20201201 [SECURITY] [DLA 2470-1] zsh security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2019-20044)Record last updated .