// For flags

CVE-2022-36763

Heap Buffer Overflow in Tcg2MeasureGptTable

Severity Score

7.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

EDK2 is susceptible to a vulnerability in the Tcg2MeasureGptTable() function, allowing a user to trigger a heap buffer overflow via a local network. Successful exploitation of this vulnerability may result in a compromise of confidentiality, integrity, and/or availability.

EDK2 es susceptible a una vulnerabilidad en la función Tcg2MeasureGptTable(), lo que permite a un usuario desencadenar un desbordamiento de búfer de almacenamiento dinámico a través de una red local. La explotación exitosa de esta vulnerabilidad puede resultar en un compromiso de confidencialidad, integridad y/o disponibilidad.

A heap buffer overflow flaw was found via the Tcg2MeasureGptTable() function in EDK2, arising from inadequate validation of the GPT Primary Header, presenting a minor risk to confidentiality and integrity. The primary consequence is likely a crash or denial of service. This issue may allow a local attacker to craft a GPT table, causing an integer overflow and consequent buffer overflow.

*Credits: Doug Flick
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2022-07-25 CVE Reserved
  • 2024-01-09 CVE Published
  • 2024-01-17 EPSS Updated
  • 2024-08-03 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
  • CWE-122: Heap-based Buffer Overflow
  • CWE-680: Integer Overflow to Buffer Overflow
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Tianocore
Search vendor "Tianocore"
 Edk2
Search vendor "Tianocore" for product "Edk2"
 <= 202311
Search vendor "Tianocore" for product "Edk2" and version " <= 202311"
-
Affected