CVE-2020-1733

2020-03-1118:47:40

CWE-377

redhat

www.cve.org

5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:L

6.2 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

38.9%

JSON

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’.

CNA Affected

[
  {
    "product": "Ansible",
    "vendor": "Red Hat",
    "versions": [
      {
        "status": "affected",
        "version": "2.7.17 and prior"
      },
      {
        "status": "affected",
        "version": "2.8.9 and prior"
      },
      {
        "status": "affected",
        "version": "2.9.6 and prior"
      }
    ]
  }
]