CVE-2024-32462 (GCVE-0-2024-32462)
Vulnerability from cvelistv5 – Published: 2024-04-18 18:11 – Updated: 2025-12-16 18:13
VLAI
EPSS
VEX
Title
Flatpak vulnerable to a sandbox escape via RequestBackground portal due to bad argument parsing
Summary
Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. in versions before 1.10.9, 1.12.9, 1.14.6, and 1.15.8, a malicious or compromised Flatpak app could execute arbitrary code outside its sandbox. Normally, the `--command` argument of `flatpak run` expects to be given a command to run in the specified Flatpak app, optionally along with some arguments. However it is possible to instead pass `bwrap` arguments to `--command=`, such as `--bind`. It's possible to pass an arbitrary `commandline` to the portal interface `org.freedesktop.portal.Background.RequestBackground` from within a Flatpak app. When this is converted into a `--command` and arguments, it achieves the same effect of passing arguments directly to `bwrap`, and thus can be used for a sandbox escape. The solution is to pass the `--` argument to `bwrap`, which makes it stop processing options. This has been supported since bubblewrap 0.3.0. All supported versions of Flatpak require at least that version of bubblewrap. xdg-desktop-portal version 1.18.4 will mitigate this vulnerability by only allowing Flatpak apps to create .desktop files for commands that do not start with --. The vulnerability is patched in 1.15.8, 1.10.9, 1.12.9, and 1.14.6.
Severity
8.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-04-20 04:00 UTC
CWE
- CWE-88 - Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://github.com/flatpak/flatpak/security/advis… | x_refsource_CONFIRM |
| https://github.com/flatpak/flatpak/commit/72016e3… | x_refsource_MISC |
| https://github.com/flatpak/flatpak/commit/81abe2a… | x_refsource_MISC |
| https://github.com/flatpak/flatpak/commit/b7c1a55… | x_refsource_MISC |
| https://github.com/flatpak/flatpak/commit/bbab7ed… | x_refsource_MISC |
| https://lists.fedoraproject.org/archives/list/pac… | |
| https://lists.fedoraproject.org/archives/list/pac… | |
| http://www.openwall.com/lists/oss-security/2024/04/18/5 |
Impacted products
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"value": "Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. in versions before 1.10.9, 1.12.9, 1.14.6, and 1.15.8, a malicious or compromised Flatpak app could execute arbitrary code outside its sandbox. Normally, the `--command` argument of `flatpak run` expects to be given a command to run in the specified Flatpak app, optionally along with some arguments. However it is possible to instead pass `bwrap` arguments to `--command=`, such as `--bind`. It\u0027s possible to pass an arbitrary `commandline` to the portal interface `org.freedesktop.portal.Background.RequestBackground` from within a Flatpak app. When this is converted into a `--command` and arguments, it achieves the same effect of passing arguments directly to `bwrap`, and thus can be used for a sandbox escape. The solution is to pass the `--` argument to `bwrap`, which makes it stop processing options. This has been supported since bubblewrap 0.3.0. All supported versions of Flatpak require at least that version of bubblewrap. xdg-desktop-portal version 1.18.4 will mitigate this vulnerability by only allowing Flatpak apps to create .desktop files for commands that do not start with --. The vulnerability is patched in 1.15.8, 1.10.9, 1.12.9, and 1.14.6."
},
{
"lang": "es",
"value": "Flatpak es un sistema para crear, distribuir y ejecutar aplicaciones de escritorio en espacio aislado en Linux. en versiones anteriores a la 1.10.9, 1.12.9, 1.14.6 y 1.15.8, una aplicaci\u00f3n Flatpak maliciosa o comprometida podr\u00eda ejecutar c\u00f3digo arbitrario fuera de su zona de pruebas. Normalmente, el argumento `--command` de `flatpak run` espera recibir un comando para ejecutar en la aplicaci\u00f3n Flatpak especificada, opcionalmente junto con algunos argumentos. Sin embargo, es posible pasar argumentos `bwrap` a `--command=`, como `--bind`. Es posible pasar una \"l\u00ednea de comando\" arbitraria a la interfaz del portal \"org.freedesktop.portal.Background.RequestBackground\" desde una aplicaci\u00f3n Flatpak. Cuando esto se convierte en un `--command` y argumentos, logra el mismo efecto de pasar argumentos directamente a `bwrap` y, por lo tanto, puede usarse para un escape sandbox. La soluci\u00f3n es pasar el argumento `--` a `bwrap`, lo que hace que deje de procesar las opciones. Esto ha sido compatible desde bubblewrap 0.3.0. Todas las versiones compatibles de Flatpak requieren al menos esa versi\u00f3n de bubblewrap. xdg-desktop-portal versi\u00f3n 1.18.4 mitigar\u00e1 esta vulnerabilidad al permitir que las aplicaciones Flatpak solo creen archivos .desktop para comandos que no comiencen con --. La vulnerabilidad est\u00e1 parcheada en 1.15.8, 1.10.9, 1.12.9 y 1.14.6."
}
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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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