Bug 2257584 (CVE-2022-36765) - CVE-2022-36765 EDK2: integer overflow in CreateHob() could lead to HOB OOB R/W
Summary: CVE-2022-36765 EDK2: integer overflow in CreateHob() could lead to HOB OOB R/W
Keywords:
Status: NEW
Alias: CVE-2022-36765
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
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Depends On: 2257592 2257589
Blocks: 2257597
TreeView+ depends on / blocked
 
Reported: 2024-01-10 06:12 UTC by TEJ RATHI
Modified: 2024-03-22 22:26 UTC (History)
0 users

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A flaw was found in the CreateHob() function in EDK2. An attacker, leveraging a local network, can initiate an integer overflow leading to a buffer overflow. This issue arises during size alignment within the CreateHob() function, requiring activation in the PEI phase. Successful exploitation of this flaw poses a moderate threat to confidentiality and integrity, however, the primary consequence is likely a crash or denial of service.
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Description TEJ RATHI 2024-01-10 06:12:15 UTC 
EDK2 is susceptible to a vulnerability in the CreateHob() function, allowing a user to trigger a integer overflow to buffer overflow via a local network. Successful exploitation of this vulnerability may result in a compromise of confidentiality, integrity, and/or availability.

https://github.com/tianocore/edk2/security/advisories/GHSA-ch4w-v7m3-g8wx
Comment 1 TEJ RATHI 2024-01-10 06:36:04 UTC 
Created edk2 tracking bugs for this issue:

Affects: epel-all [bug 2257592]
Affects: fedora-all [bug 2257589]
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