Exposure of Resource to Wrong Sphere in LXC - CVE-2022-47952

Vulnerability identifier: #VU71474

CSH Severity: Low

CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2022-47952

CWE-ID: CWE-668

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to compromise the system.

The vulnerability exists due to exposure of resource to wrong sphere in lxc-user-nic. A local user can obtain file existence information.

LXC
openEuler
lxc-devel
lxc-help
lxc-debuginfo
lxc-debugsource
lxc-libs
lxc

Install updates from vendor's website.

LXC - update to 5.0.2
lxc-devel - update to 4.0.3-2022102408
lxc-help - update to 4.0.3-2022102408
lxc-debuginfo - update to 4.0.3-2022102408
lxc-debugsource - update to 4.0.3-2022102408
lxc-libs - update to 4.0.3-2022102408
lxc - update to 4.0.3-2022102408

• https://github.com/MaherAzzouzi/CVE-2022-47952
• https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1783591/comments/45
• https://github.com/lxc/lxc/blob/0b83d71c2c8f3bac9503f894cd84584f79258bb3/lxc.spec.in#L274
• https://github.com/lxc/lxc/blob/0b83d71c2c8f3bac9503f894cd84584f79258bb3/src/lxc/cmd/lxc_user_nic.c#L1085-L1104

• Information disclosure in LXC
• openEuler 20.03 LTS SP3 update for lxc
• openEuler 22.03 LTS update for lxc
• openEuler 22.03 LTS SP1 update for lxc