CVE-2023-40549
Shim: out-of-bounds read in verify_buffer_authenticode() malformed pe file
Severity Score
5.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
Track
*SSVC
Descriptions
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.
Se encontró un fallo de lectura fuera de los límites en Shim debido a la falta de una verificación de límites adecuada durante la carga de un binario PE. Esta falla permite a un atacante cargar un binario PE manipulado, lo que desencadena el problema y bloquea Shim, lo que resulta en una denegación de servicio.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:Track
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2023-08-15 CVE Reserved
- 2024-01-29 CVE Published
- 2024-11-24 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-125: Out-of-bounds Read
CAPEC
References (12)
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/errata/RHSA-2024:1834 | 2024-06-10 | |
| https://access.redhat.com/errata/RHSA-2024:1835 | 2024-06-10 | |
| https://access.redhat.com/errata/RHSA-2024:1873 | 2024-06-10 | |
| https://access.redhat.com/errata/RHSA-2024:1876 | 2024-06-10 | |
| https://access.redhat.com/errata/RHSA-2024:1883 | 2024-06-10 | |
| https://access.redhat.com/errata/RHSA-2024:1902 | 2024-06-10 | |
| https://access.redhat.com/errata/RHSA-2024:1903 | 2024-06-10 | |
| https://access.redhat.com/errata/RHSA-2024:1959 | 2024-06-10 | |
| https://access.redhat.com/errata/RHSA-2024:2086 | 2024-06-10 | |
| https://access.redhat.com/security/cve/CVE-2023-40549 | 2024-04-29 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2241797 | 2024-04-29 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Redhat Search vendor "Redhat" | Shim Search vendor "Redhat" for product "Shim" | < 15.8 Search vendor "Redhat" for product "Shim" and version " < 15.8" | - |
Affected
| ||||||
| Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 39 Search vendor "Fedoraproject" for product "Fedora" and version "39" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 8.0 Search vendor "Redhat" for product "Enterprise Linux" and version "8.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 9.0 Search vendor "Redhat" for product "Enterprise Linux" and version "9.0" | - |
Affected
| ||||||