SB2023090616 - Denial of service in Linux kernel ksmbd
Published: September 6, 2023
Security Bulletin ID
SB2023090616
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Resource exhaustion (CVE-ID: CVE-2023-32247)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to ksmbd does not properly control consumption of internal resources when handling SMB2_SESSION_SETUP commands. A remote attacker can send specially crafted data to the server during session setup, trigger memory exhaustion and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.