CVE-2022-21658

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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."}, {"lang": "es", "value": "Rust es un lenguaje de programaci\u00f3n multiparadigma de prop\u00f3sito general dise\u00f1ado para el rendimiento y la seguridad, especialmente la concurrencia segura. 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. La mitigaci\u00f3n existente funciona como es pretendido fuera de las condiciones de carrera"}], "id": "CVE-2022-21658", "lastModified": "2026-06-17T04:26:42.123", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 3.3, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:L/AC:M/Au:N/C:N/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 3.4, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.3, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", 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Advisory"], "url": "https://support.apple.com/kb/HT213186"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://support.apple.com/kb/HT213193"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-363"}, {"lang": "en", "value": "CWE-367"}], "source": "security-advisories@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-367"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2022:1894", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "rust-toolset:rhel8-8060020220125235043.eab6f2ea", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-05-10T00:00:00Z"}], "bugzilla": {"description": "rust: Race condition in remove_dir_all leading to removal of files outside of the directory being removed", "id": "2041504", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2041504"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N", "status": "verified"}, "cwe": "(CWE-363|CWE-367)", "details": ["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.", "A race condition flaw was found in Rust's std::fs::remove_dir_all function. Rust applications that use this function may be vulnerable to a race condition where an unprivileged attacker can trick the application into deleting files and directories, causing an impact on system data integrity. If the application is privileged, an attacker can possibly delete files they would not usually have access to."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2022-21658", "package_state": [{"cpe": "cpe:/a:redhat:devtools:", "fix_state": "Affected", "package_name": "rust-toolset-1.54-rust", "product_name": "Red Hat Developer Tools"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "stratisd", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "rust", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Will not fix", "package_name": "stratisd", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "kata-containers", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2022-01-20T11:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-21658\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-21658\nhttps://github.com/rust-lang/rust/security/advisories/GHSA-r9cc-f5pr-p3j2"], "statement": "This flaw has been given a Severity of Moderate because it is not exploitable at will on every Rust program as it requires a specific scenario where a privileged program uses a specific Rust stdlib function, the attacker has some knowledge of the program's file operations, and has the normal limitations and challenges of a \nTime-of-check to time-of-use (TOCTOU). It must also be carried out by an unprivileged attacker.", "threat_severity": "Moderate"}

{}