CVE-2021-32554 apport read_file() function could follow maliciously constructed symbolic links

2021-05-2500:00:00

CWE-59

CWE-61

canonical

www.cve.org

7.3 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

LOW

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

0.0004 Low

EPSS

Percentile

5.1%

JSON

It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the xorg package apport hooks, it could expose private data to other local users.

CNA Affected

[
  {
    "product": "apport",
    "vendor": "Canonical",
    "versions": [
      {
        "lessThan": "2.20.1-0ubuntu2.30+esm1",
        "status": "affected",
        "version": "2.20.1",
        "versionType": "custom"
      },
      {
        "lessThan": "2.20.9-0ubuntu7.24",
        "status": "affected",
        "version": "2.20.9",
        "versionType": "custom"
      },
      {
        "lessThan": "2.20.11-0ubuntu27.18",
        "status": "affected",
        "version": "2.20.11-0ubuntu27",
        "versionType": "custom"
      },
      {
        "lessThan": "2.20.11-0ubuntu50.7",
        "status": "affected",
        "version": "2.20.11-0ubuntu50",
        "versionType": "custom"
      },
      {
        "lessThan": "2.20.11-0ubuntu65.1",
        "status": "affected",
        "version": "2.20.11-0ubuntu65",
        "versionType": "custom"
      },
      {
        "lessThan": "2.14.1-0ubuntu3.29+esm7",
        "status": "affected",
        "version": "2.14.1-0ubuntu3",
        "versionType": "custom"
      }
    ]
  }
]