GHSA-qxm5-vx5j-pp6w

snapcraft Access Restriction Bypass

Source: GitHub Advisory Database (reviewed) Moderate CVE-2020-27348

Packages

Ecosystem	Package	Affected	Fixed in
PyPI	snapcraft	< 4.4.4	4.4.4

Details

As written in the advisory (Markdown source, shown as plain text).

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.

References

External links from the advisory. They lead to third-party sites.

https://nvd.nist.gov/vuln/detail/CVE-2020-27348 advisory
https://github.com/snapcore/snapcraft/pull/3345 web
https://github.com/snapcore/snapcraft/commit/a0ceca9d531a34c979251030ed67b5fa2abfdd9a web
https://bugs.launchpad.net/bugs/1901572 web
https://github.com/pypa/advisory-database/tree/main/vulns/snapcraft/PYSEC-2020-109.yaml web
https://github.com/snapcore/snapcraft package
https://usn.ubuntu.com/usn/usn-4661-1 web