Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
Low
Attack Vector
Local
0

CVE-2022-47952

Disclosure Date: January 01, 2023
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

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.

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CVSS V3 Severity and Metrics
Base Score:
3.3 Low
Impact Score:
1.4
Exploitability Score:
1.8
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack Vector (AV):
Local
Attack Complexity (AC):
Low
Privileges Required (PR):
Low
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
Low
Integrity (I):
None
Availability (A):
None

General Information

Vendors

  • linuxcontainers

Products

  • lxc
Technical Analysis