CVE-2021-3696

 

Published at: - 06-07-2022 06:15

Last modified: - 24-10-2022 03:08

Total changes: - 5

Description

A heap out-of-bounds write may heppen during the handling of Huffman tables in the PNG reader. This may lead to data corruption in the heap space. Confidentiality, Integrity and Availablity impact may be considered Low as it's very complex to an attacker control the encoding and positioning of corrupted Huffman entries to achieve results such as arbitrary code execution and/or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

 

Verification logic

 

Reference

• https://bugzilla.redhat.com/show_bug.cgi?id=1991686
• GLSA-202209-12-
• https://security.netapp.com/advisory/ntap-20220930-0001/

 

Keywords

NVD

 

CVE-2021-3696

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures