CVE-2022-47952
Fixed in a distro release EPSS <1%CVSS 3.3
lxc-user-nic in lxc through 5.0.1 is installed setuid root, and may allow local users to infer whether any file exists, even within a protected directory tree, because "Failed to open" often indicates that a file does not exist, whereas "does not refer to a network namespace path" often indicates that a file exists. NOTE: this is different from CVE-2018-6556 because the CVE-2018-6556 fix design was based on the premise that "we will report back to the user that the open() failed but the user has no way of knowing why it failed"; however, in many realistic cases, there are no plausible reasons for failing except that the file does not exist.
Products: linuxcontainers lxc
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Alpine 3.14 | lxc | 4.0.10-r2 |
| Alpine 3.15 | lxc | 4.0.12-r2 |
| Alpine 3.16 | lxc | 4.0.12-r2 |
| Alpine 3.17 | lxc | 5.0.1-r2 |
| Alpine 3.18 | lxc | 5.0.1-r2 |
| Alpine 3.19 | lxc | 5.0.1-r2 |
| Alpine 3.20 | lxc | 5.0.1-r2 |
| Alpine 3.21 | lxc | 5.0.1-r2 |
| Alpine 3.22 | lxc | 5.0.1-r2 |
| Alpine 3.23 | lxc | 5.0.1-r2 |
| Alpine 3.24 | lxc | 5.0.1-r2 |
| Debian 10 | lxc | 1:3.1.0+really3.0.3-8+deb10u1 |
| Debian 12 | lxc | 1:5.0.2-1 |
| Debian 13 | lxc | 1:5.0.2-1 |
| Debian 14 | lxc | 1:5.0.2-1 |
| SUSE Package Hub 15 SP5 | lxc | 6.0.2-bp156.2.3.1 |
| SUSE Package Hub 15 SP6 | lxc | 6.0.2-bp156.2.3.1 |
| Ubuntu Pro 16.04 LTS | lxc | 2.0.11-0ubuntu1~16.04.3+esm1 |
| Ubuntu Pro 18.04 LTS | lxc | 3.0.3-0ubuntu1~18.04.3+esm1 |
| Ubuntu Pro 20.04 LTS | lxc | 1:4.0.12-0ubuntu1~20.04.1+esm1 |
| Ubuntu Pro 22.04 LTS | lxc | 1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1+esm1 |
| Ubuntu Pro 24.04 LTS | lxc | 1:5.0.3-2ubuntu7.3+esm1 |
| Ubuntu Pro 26.04 LTS | lxc | 1:6.0.6-1ubuntu1+esm1 |
| openSUSE Leap 15.5 | lxc | 6.0.2-bp156.2.3.1 |
| openSUSE Leap 15.6 | lxc | 6.0.2-bp156.2.3.1 |
| openSUSE Tumbleweed | lxc | 5.0.2-1.1 |