CVE-2023-4458

low-risk
Published 2024-11-14

A flaw was found within the parsing of extended attributes 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.

Do I need to act?

-
0.12% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.0/10 Medium
NETWORK / HIGH complexity

Affected Products (1)

Affected Vendors

Linux

References (3)

Vendor Advisory https://access.redhat.com/security/cve/CVE-2023-4458
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=2325516
Third Party Advisory https://www.zerodayinitiative.com/advisories/ZDI-24-590/
19
/ 100
low-risk
Severity 13/34 · Low
Exploitability 1/34 · Minimal
Exposure 5/34 · Minimal