CVE-2023-4458
Last modified
CVE-2023-4458 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.83% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 6.6 |
References
- https://access.redhat.com/security/cve/CVE-2023-4458Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2325516Issue Tracking, Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-24-590/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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