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CVE-2020-1733

Estado: ModificadaMedia (5)—

A race condition flaw was found in Ansible Engine 2.7.17 and prior, 2.8.9 and prior, 2.9.6 and prior when running a playbook with an unprivileged become user. When Ansible needs to run a module with become user, the temporary directory is created in /var/tmp. This directory is created with "umask 77 && mkdir -p <dir>"; this operation does not fail if the directory already exists and is owned by another user. An attacker could take advantage to gain control of the become user as the target directory can be retrieved by iterating '/proc/<pid>/cmdline'.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (6)

Debian — Debian LinuxFedoraproject — FedoraRedhat — AnsibleRedhat — Ansible TowerRedhat — Cloudforms Management EngineRedhat — Openstack

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2020-1733",
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      "value": "A race condition flaw was found in Ansible Engine 2.7.17 and prior, 2.8.9 and prior, 2.9.6 and prior when running a playbook with an unprivileged become user. When Ansible needs to run a module with become user, the temporary directory is created in /var/tmp. This directory is created with \"umask 77 && mkdir -p <dir>\"; this operation does not fail if the directory already exists and is owned by another user. An attacker could take advantage to gain control of the become user as the target directory can be retrieved by iterating '/proc/<pid>/cmdline'."
    },
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      "lang": "es",
      "value": "Se encontró un fallo de condición de carrera en Ansible Engine versiones 2.7.17 y anteriores, 2.8.9 y anteriores, 2.9.6 y anteriores, cuando se ejecuta un playbook con un usuario convertido a no privilegiado. Cuando Ansible necesita ejecutar un módulo con un usuario convertido, el directorio temporal es creado en /var/tmp. Este directorio se crea con \"umask 77 &amp;&amp; mkdir -p (dir)\"; Esta operación no tiene un fallo si el directorio ya existe y es propiedad de otro usuario. Un atacante podría tomar ventaja para tomar el control del usuario convertido, ya que el directorio de destino puede ser recuperado iterando \"/proc//cmdline\"."
    }
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  "lastModified": "2026-06-17T03:02:17.740",
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