CVE-2020-27348 - CVE House
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Status published Medium CVE-2020-27348

snapcraft may build snaps with incorrect LD_LIBRARY_PATH

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • itszn

References

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Affected Vendor

Affected Software

snapcraft
Vulnerable Versions:
4.4, 2.43.1

Timeline

Official Publish: December 4th, 2020
Last Modified: September 16th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L

Weaknesses (CWE)

CWE-427

MITRE ATT&CK TTPs

T1574 Hijack Execution Flow
Persistence
T1574.001 DLL Search Order Hijacking
Privilege Escalation
T1547 Boot or Logon Autostart Execution
Persistence
T1036 Masquerading
Defense Evasion
T1059 Command and Scripting Interpreter
Execution