CVE-2020-27348 snapcraft may build snaps with incorrect LD_LIBRARY_PATH

2020-12-0300:00:00

CWE-427

canonical

www.cve.org

6.8 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

LOW

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

0.001 Low

EPSS

Percentile

38.8%

JSON

In some conditions, a snap package built by snapcraft includes the current directory in LD_LIBRARY_PATH, allowing a malicious snap to gain code execution within the context of another snap if both plug the home interface or similar. This issue affects snapcraft versions prior to 4.4.4, prior to 2.43.1+16.04.1, and prior to 2.43.1+18.04.1.

CNA Affected

[
  {
    "product": "snapcraft",
    "vendor": "Canonical",
    "versions": [
      {
        "lessThan": "4.4.4",
        "status": "affected",
        "version": "4.4",
        "versionType": "custom"
      },
      {
        "changes": [
          {
            "at": "2.43.1+18.04.1",
            "status": "unaffected"
          }
        ],
        "lessThan": "2.43.1+16.04.1",
        "status": "affected",
        "version": "2.43.1",
        "versionType": "custom"
      }
    ]
  }
]