CVE-2022-21658 (GCVE-0-2022-21658)

Vulnerability from cvelistv5 – Published: 2022-01-20 00:00 – Updated: 2025-04-22 18:32
VLAI?
Title
Race condition in std::fs::remove_dir_all in rustlang
Summary
Rust is a multi-paradigm, general-purpose programming language designed for performance and safety, especially safe concurrency. The Rust Security Response WG was notified that the `std::fs::remove_dir_all` standard library function is vulnerable a race condition enabling symlink following (CWE-363). An attacker could use this security issue to trick a privileged program into deleting files and directories the attacker couldn't otherwise access or delete. Rust 1.0.0 through Rust 1.58.0 is affected by this vulnerability with 1.58.1 containing a patch. Note that the following build targets don't have usable APIs to properly mitigate the attack, and are thus still vulnerable even with a patched toolchain: macOS before version 10.10 (Yosemite) and REDOX. We recommend everyone to update to Rust 1.58.1 as soon as possible, especially people developing programs expected to run in privileged contexts (including system daemons and setuid binaries), as those have the highest risk of being affected by this. Note that adding checks in your codebase before calling remove_dir_all will not mitigate the vulnerability, as they would also be vulnerable to race conditions like remove_dir_all itself. The existing mitigation is working as intended outside of race conditions.
Severity ?
7.3 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H
CWE
  • CWE-363 - Race Condition Enabling Link Following
  • CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
Impacted products
Vendor Product Version
rust-lang rust Affected: < 1.58.1
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    "nvd": "{\"cve\":{\"id\":\"CVE-2022-21658\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2022-01-20T18:15:07.703\",\"lastModified\":\"2024-11-21T06:45:10.343\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Rust is a multi-paradigm, general-purpose programming language designed for performance and safety, especially safe concurrency. The Rust Security Response WG was notified that the `std::fs::remove_dir_all` standard library function is vulnerable a race condition enabling symlink following (CWE-363). An attacker could use this security issue to trick a privileged program into deleting files and directories the attacker couldn\u0027t otherwise access or delete. Rust 1.0.0 through Rust 1.58.0 is affected by this vulnerability with 1.58.1 containing a patch. 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El Grupo de Trabajo de Respuesta de Seguridad de Rust fue notificado de que la funci\u00f3n de la biblioteca est\u00e1ndar \\\"std::fs::remove_dir_all\\\" es vulnerable a una condici\u00f3n de carrera que permite el seguimiento de enlaces simb\u00f3licos (CWE-363). Un atacante podr\u00eda usar este problema de seguridad para enga\u00f1ar a un programa con privilegios para que elimine archivos y directorios a los que el atacante no podr\u00eda acceder o eliminar de otro modo. Rust versiones 1.0.0 hasta Rust versi\u00f3n 1.58.0 est\u00e1n afectados por esta vulnerabilidad, con la versi\u00f3n 1.58.1 que contiene un parche. Tenga en cuenta que los siguientes objetivos de construcci\u00f3n no presentan APIs usables para mitigar apropiadamente el ataque, y por lo tanto siguen siendo vulnerables incluso con una cadena de herramientas parcheada: macOS versiones anteriores a 10.10 (Yosemite) y REDOX. Recomendamos a todo el mundo que actualice a Rust versi\u00f3n 1.58.1 tan pronto como sea posible, especialmente a las personas que desarrollan programas que esperan que sean ejecutados en contextos privilegiados (incluidos los demonios del sistema y los binarios setuid), ya que son los que presentan el mayor riesgo de estar afectados por esto. Tenga en cuenta que a\u00f1adir comprobaciones en su c\u00f3digo base antes de llamar a remove_dir_all no mitigar\u00e1 la vulnerabilidad, ya que tambi\u00e9n ser\u00edan vulnerables a condiciones de carrera como el propio remove_dir_all. 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}


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Tags
Taxonomy of the tags.




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.



Detection rules are retrieved from Rulezet.