CVE-2020-13696 (GCVE-0-2020-13696)
Vulnerability from cvelistv5 – Published: 2020-06-08 16:32 – Updated: 2024-08-04 12:25
VLAI?
Summary
An issue was discovered in LinuxTV xawtv before 3.107. The function dev_open() in v4l-conf.c does not perform sufficient checks to prevent an unprivileged caller of the program from opening unintended filesystem paths. This allows a local attacker with access to the v4l-conf setuid-root program to test for the existence of arbitrary files and to trigger an open on arbitrary files with mode O_RDWR. To achieve this, relative path components need to be added to the device path, as demonstrated by a v4l-conf -c /dev/../root/.bash_history command.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
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La funci\u00f3n dev_open() en el archivo v4l-conf.c no realiza comprobaciones suficientes para evitar que un llamador sin privilegios del programa de apertura a rutas de sistema de archivos no deseadas. Esto permite a un atacante local con acceso al programa v4l-conf setuid-root probar la existencia de archivos arbitrarios y activar una apertura en archivos arbitrarios con el modo O_RDWR. Para lograr esto, los componentes de ruta relativa necesitan ser agregados a la ruta del dispositivo, como es demostrado por un comando v4l-conf -c 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}
}
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Sightings
| Author | Source | Type | Date |
|---|
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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