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CVE-2022-28737

Date: July 19, 2023

There's a possible overflow in handle_image() when shim tries to load and execute crafted EFI executables; The handle_image() function takes into account the SizeOfRawData field from each section to be loaded. An attacker can leverage this to perform out-of-bound writes into memory. Arbitrary code execution is not discarded in such scenario.

Language: C

Severity Score

Related Resources (7)

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-28737
https://nvd.nist.gov/vuln/detail/CVE-2022-28737
https://security-tracker.debian.org/tracker/CVE-2022-28737
https://www.openwall.com/lists/oss-security/2022/06/07/5
https://people.canonical.com/~ubuntu-security/cve/CVE-2022-28737
https://access.redhat.com/security/cve/CVE-2022-28737
https://www.mend.io/vulnerability-database/CVE-2022-28737

Severity Score

Weakness Type (CWE)

Out-of-bounds Write

CWE-787

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): HIGH
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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