FKIE_CVE-2019-20044
Vulnerability from fkie_nvd - Published: 2020-02-24 14:15 - Updated: 2026-06-17 02:29
Severity
Summary
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().
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| zsh | zsh | * | |
| apple | macos | - | |
| linux | linux_kernel | - | |
| fedoraproject | fedora | 30 | |
| fedoraproject | fedora | 31 | |
| debian | debian_linux | 8.0 | |
| debian | debian_linux | 9.0 | |
| apple | ipados | * | |
| apple | iphone_os | * | |
| apple | mac_os_x | * | |
| apple | mac_os_x | * | |
| apple | mac_os_x | * | |
| apple | mac_os_x | * | |
| apple | mac_os_x | 10.13.6 | |
| apple | mac_os_x | 10.13.6 | |
| apple | mac_os_x | 10.13.6 | |
| apple | mac_os_x | 10.13.6 | |
| apple | mac_os_x | 10.13.6 | |
| apple | mac_os_x | 10.13.6 | |
| apple | mac_os_x | 10.13.6 | |
| apple | mac_os_x | 10.13.6 | |
| apple | mac_os_x | 10.13.6 | |
| apple | mac_os_x | 10.13.6 | |
| apple | mac_os_x | 10.13.6 | |
| apple | mac_os_x | 10.13.6 | |
| apple | mac_os_x | 10.14.6 | |
| apple | mac_os_x | 10.14.6 | |
| apple | mac_os_x | 10.14.6 | |
| apple | mac_os_x | 10.14.6 | |
| apple | mac_os_x | 10.14.6 | |
| apple | mac_os_x | 10.14.6 | |
| apple | mac_os_x | 10.14.6 | |
| apple | mac_os_x | 10.14.6 | |
| apple | mac_os_x | 10.14.6 | |
| apple | tvos | * | |
| apple | watchos | * |
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"value": "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()."
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"lang": "es",
"value": "En Zsh versiones anteriores a 5.8, los atacantes capaces de ejecutar comandos pueden recuperar privilegios eliminados mediante la opci\u00f3n --no-PRIVILEGED. Zsh presenta un fallo al sobrescribir el uid guardado, ya que los privilegios originales pueden ser restaurados mediante una ejecuci\u00f3n de zmodload de MODULE_PATH=/dir/with/module con un m\u00f3dulo que llama a la funci\u00f3n setuid()."
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"id": "CVE-2019-20044",
"lastModified": "2026-06-17T02:29:53.250",
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"published": "2020-02-24T14:15:11.667",
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}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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