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MEDIUM · 6.2

CVE-2023-40549

An out-of-bounds read flaw was found in Shim due to the lack of proper boundary verification during the load of a PE binary. This flaw allows an attacker to load a crafted PE binary, triggering the is...

Vulnerability Description

An out-of-bounds read flaw was found in Shim due to the lack of proper boundary verification during the load of a PE binary. This flaw allows an attacker to load a crafted PE binary, triggering the issue and crashing Shim, resulting in a denial of service.

CVSS Score

6.2

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
RedhatShim< 15.8
FedoraprojectFedora39
RedhatEnterprise Linux8.0

Related Weaknesses (CWE)

CWE-125

References

FAQ

What is CVE-2023-40549?

CVE-2023-40549 is a vulnerability with a CVSS score of 6.2 (MEDIUM). An out-of-bounds read flaw was found in Shim due to the lack of proper boundary verification during the load of a PE binary. This flaw allows an attacker to load a crafted PE binary, triggering the is...

How severe is CVE-2023-40549?

CVE-2023-40549 has been rated MEDIUM with a CVSS base score of 6.2/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2023-40549?

Check the references section above for vendor advisories and patch information. Affected products include: Redhat Shim, Fedoraproject Fedora, Redhat Enterprise Linux.