CVE-2023-32247

Session setup memory exhaustion denial-of-service vulnerability

Description

A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the handling of SMB2_SESSION_SETUP commands. The issue results from the lack of control of resource consumption. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.05%
Third-Party Advisory redhat.com Third-Party Advisory redhat.com Third-Party Advisory netapp.com Third-Party Advisory zerodayinitiative.com
Affected: n/a kernel
Affected: Red Hat Red Hat Enterprise Linux 6
Affected: Red Hat Red Hat Enterprise Linux 7
Affected: Red Hat Red Hat Enterprise Linux 7
Affected: Red Hat Red Hat Enterprise Linux 8
Affected: Red Hat Red Hat Enterprise Linux 8
Affected: Red Hat Red Hat Enterprise Linux 9
Affected: Red Hat Red Hat Enterprise Linux 9
Affected: Fedora Fedora
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/security/cve/CVE-2023-32247 third party advisory vdb entry
https://bugzilla.redhat.com/show_bug.cgi?id=2219803 patch third party advisory issue tracking
https://security.netapp.com/advisory/ntap-20230915-0011/ third party advisory
https://www.zerodayinitiative.com/advisories/ZDI-CAN-20478/ patch third party advisory vdb entry

Frequently Asked Questions

What is the severity of CVE-2023-32247?
CVE-2023-32247 has been scored as a high severity vulnerability.
How to fix CVE-2023-32247?
To fix CVE-2023-32247, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-32247 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-32247 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-32247?
CVE-2023-32247 affects n/a kernel, Red Hat Red Hat Enterprise Linux 6, Red Hat Red Hat Enterprise Linux 7, Red Hat Red Hat Enterprise Linux 7, Red Hat Red Hat Enterprise Linux 8, Red Hat Red Hat Enterprise Linux 8, Red Hat Red Hat Enterprise Linux 9, Red Hat Red Hat Enterprise Linux 9, Fedora Fedora.
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