CVE Vulnerability

CVE-2022-47952

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.

3.3 /10

CVSS v3.0 : LOW

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/MaherAzzouzi/CVE-2022-47952 Third Party Advisory
https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1783591/comments/45 Issue Tracking Vendor Advisory
https://github.com/lxc/lxc/blob/0b83d71c2c8f3bac9503f894cd84584f79258bb3/lxc.spec.in#L274 Third Party Advisory
https://github.com/lxc/lxc/blob/0b83d71c2c8f3bac9503f894cd84584f79258bb3/src/lxc/cmd/lxc_user_nic.c#L1085-L1104 Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:linuxcontainers:lxc:*:*:*:*:*:*:*:*
Information

Published : 2023-01-01 06:15

Updated : 2023-01-09 03:20

NVD link : CVE-2022-47952

Mitre link : CVE-2022-47952

Products Affected
No products.
CWE
CWE-668