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[email protected]CVE-2020-1733

HistoryMar 11, 2020 - 7:15 p.m.

CVE-2020-1733

2020-03-1119:15:13

CWE-377

CWE-362

[email protected]

web.nvd.nist.gov

182

cve-2020-1733

ansible engine

security flaw

race condition

unprivileged user

temporary directory

nvd

3.7 Low

CVSS2

Attack Vector

LOCAL

Attack Complexity

HIGH

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:H/Au:N/C:P/I:P/A:P

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

5.8 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’.

Affected configurations

Vulners

NVD

Node

redhatansibleRange≤2.7.17

redhatansibleRange≤2.8.9

redhatansibleRange≤2.9.6

VendorProductVersionCPE
redhatansible*cpe:2.3:a:redhat:ansible:*:*:*:*:*:*:*:*
redhatansible*cpe:2.3:a:redhat:ansible:*:*:*:*:*:*:*:*
redhatansible*cpe:2.3:a:redhat:ansible:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
redhat	ansible	*	cpe:2.3:a:redhat:ansible::::::::
redhat	ansible	*	cpe:2.3:a:redhat:ansible::::::::
redhat	ansible	*	cpe:2.3:a:redhat:ansible::::::::

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"
      }
    ]
  }
]