CVE-2023-39176

Kernel: ksmbd: transform header out-of-bounds read information disclosure vulnerability

Published Nov 18, 2024 CVSS 3.1 · 5.8 Medium EPSS < 1% KEV · Not listed
Description
A flaw was found within the parsing of SMB2 requests that have a transform header in the kernel ksmbd module. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this to disclose sensitive information on affected installations of Linux. Only systems with ksmbd enabled are vulnerable to this CVE.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
EUVD EUVD EUVD-2023-42911 A flaw was found within the parsing of SMB2 requests that have a transform header in the kernel ksmbd module. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this to disclose sensitive information on affected installations of Linux. Only systems with ksmbd enabled are vulnerable to this CVE.
History
Type Values Removed Values Added
CPEs cpe:2.3:o:linux:linux_kernel:*:-:*:*:*:*:*:*
Type Values Removed Values Added
CPEs cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:-:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title kernel: ksmbd: Transform Header Out-Of-Bounds Read Information Disclosure Vulnerability Kernel: ksmbd: transform header out-of-bounds read information disclosure vulnerability
First Time appeared Redhat
Redhat enterprise Linux
CPEs cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
References
Type Values Removed Values Added
Description A flaw was found within the parsing of SMB2 requests that have a transform header in the kernel ksmbd module. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this to disclose sensitive information on affected installations of Linux. Only systems with ksmbd enabled are vulnerable to this CVE.
Title kernel: ksmbd: Transform Header Out-Of-Bounds Read Information Disclosure Vulnerability
Weaknesses CWE-125
References
Metrics threat_severity

None

cvssV3_1

{'score': 5.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N'}

threat_severity

Low

Weaknesses

Sources

Status
PUBLISHED
Assigner
fedora
Published
Updated
Nov 18, 2024, 3:10 PM
Reserved
Jul 25, 2023, 3:45 PM
Status
Analyzed
Published
Nov 18, 2024, 10:15 AM
Modified
Oct 8, 2026, 7:15 PM
Severity
Low
Public date
Jun 10, 2024, 12:00 AM