CVE-2023-32251 Information

Aug 01, 2025 cve

Description

A vulnerability has been identified in the Linux kernel’s ksmbd component (kernel SMB/CIFS server). A security control designed to prevent dictionary attacks which introduces a 5-second delay during session setup can be bypassed through the use of asynchronous requests. This bypass negates the intended anti-brute-force protection potentially allowing attackers to conduct dictionary attacks more efficiently against user credentials or other authentication mechanisms.

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Reference

https://access.redhat.com/security/cve/CVE-2023-32251 https://bugzilla.redhat.com/show_bug.cgi?id=2385852 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b096d97f47326b1e2dbdef1c91fab69ffda54d17 https://www.zerodayinitiative.com/advisories/ZDI-23-699/

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

NONE

Base Score

NONE

Base Severity

3.7

CNNVD-202507-3954 (Published: 2025-07-31)

Share on: