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.
Published: 2022-07-06
Score: 4.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2021-26981 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.
Ubuntu USN Ubuntu USN USN-6355-1 GRUB2 vulnerabilities
History

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Subscriptions

Gnu Grub2
Netapp Ontap Select Deploy Administration Utility
Redhat Codeready Linux Builder Developer Tools Enterprise Linux Enterprise Linux Eus Enterprise Linux For Power Little Endian Enterprise Linux For Power Little Endian Eus Enterprise Linux Server Aus Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions Enterprise Linux Server Tus Openshift Openshift Container Platform Rhel E4s Rhel Eus
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-03T17:01:08.303Z

Reserved: 2021-08-10T00:00:00.000Z

Link: CVE-2021-3696

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2022-07-06T16:15:08.270

Modified: 2024-11-21T06:22:10.657

Link: CVE-2021-3696

cve-icon Redhat

Severity : Moderate

Publid Date: 2022-06-07T00:00:00Z

Links: CVE-2021-3696 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses