| Name | CVE-2021-3155 |
| Description | snapd 2.54.2 and earlier created ~/snap directories in user home directories without specifying owner-only permissions. This could allow a local attacker to read information that should have been private. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1 |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| snapd (PTS) | stretch (security) | 2.21-2+deb9u1 | vulnerable |
| stretch (lts), stretch | 2.21-2+deb9u3 | vulnerable |
| buster (security), buster, buster (lts) | 2.37.4-1+deb10u3 | vulnerable |
| bullseye (security), bullseye | 2.49-1+deb11u2 | vulnerable |
| bookworm | 2.57.6-1 | fixed |
| trixie | 2.65.3-1 | fixed |
| sid | 2.66.1-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| snapd | source | (unstable) | 2.54-1 | | | |
Notes
[bullseye] - snapd <no-dsa> (Minor issue)
[buster] - snapd <no-dsa> (Minor issue)
https://github.com/snapcore/snapd/pull/9841
https://github.com/snapcore/snapd/commit/6bcaeeccd16ed8298a301dd92f6907f88c24cc85 (2.52)
https://github.com/snapcore/snapd/commit/7d2a966620002149891446a53cf114804808dcca (2.54)
[stretch] - snapd <no-dsa> (Minor issue, patch might break things, fix only after other releases are done)