Vulnerability in Canonical Snapcraft
CVE-2020-27348
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L.
EPSS exploit prediction
EPSS: 0.007 (51.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Canonical Snapcraft — versions 4.4, 2.43.1
- Canonical Ubuntu Linux — versions 16.04, 18.04
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/snapcore/snapcraft/pull/3345 (Third Party Advisory)
- usn.ubuntu.com/usn/usn-4661-1 (Patch, Third Party Advisory)
- bugs.launchpad.net/bugs/1901572 (Exploit, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2020-27348?
- CVE-2020-27348 is a medium-severity vulnerability in Canonical Snapcraft, classified under Uncontrolled Search Path Element. CVSS score: 6.8/10. Published 2020-12-04.
- How severe is CVE-2020-27348?
- Medium severity. CVSS v3 base score is 6.8 out of 10.
- Is CVE-2020-27348 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.