Home/CVE/In some conditions, a snap package built by snapcraft includes the current directory in LD_LIBRARY_PATH, allowing a mali
CVE

CVE-2020-27348

In some conditions, a snap package built by snapcraft includes the current directory in LD_LIBRARY_PATH, allowing a mali

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.

MEDIUM · CVSS 6.8 EPSS 0.00071
Schedule remediation
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-427Uncontrolled Search Path Element
CWE-427Uncontrolled Search Path Element
▤

Affected Products & Versions

2
canonical snapcraft< 4.4.4
canonical ubuntu linuxall versions
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
PyPI snapcraft MODERATE fixed in 4.4.4
⚠

Public Exploits & PoCs

1
pocbugs.launchpad.net · 1901572bugs.launchpad.net
▣

Scoring & Timeline

6.8
MEDIUM · CVSS v3.1 · security@ubuntu.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD04 Dec 2020 · 03:15 AM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L
⚑

Vendor Advisories

1
usnUSN-4661-1
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/snapcore/snapcraft/pull/3345Third Party Advisory
https://usn.ubuntu.com/usn/usn-4661-1PatchThird Party Advisory
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