CVE-2023-2640

Published Jul 26, 2023

Last updated 2 years ago

Overview

Description: On Ubuntu kernels carrying both c914c0e27eb0 and "UBUNTU: SAUCE: overlayfs: Skip permission checking for trusted.overlayfs.* xattrs", an unprivileged user may set privileged extended attributes on the mounted files, leading them to be set on the upper files without the appropriate security checks.
Source: security@ubuntu.com
NVD status: Analyzed

Risk scores

CVSS 3.1

Type: Primary
Base score: 7.8
Impact score: 5.9
Exploitability score: 1.8
Vector string: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Severity: HIGH

Weaknesses

nvd@nist.gov: CWE-863
security@ubuntu.com: CWE-863

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:canonical:ubuntu_linux:23.04:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "B2E702D7-F8C0-49BF-9FFB-883017076E98"
          }
        ],
        "operator": "OR"
      }
    ]
  }
]

References