Vulnerability Details CVE-2021-3696
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 30.8%
CVSS Severity
CVSS v3 Score 4.5
CVSS v2 Score 6.9
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1991686
- https://security.gentoo.org/glsa/202209-12
- https://security.netapp.com/advisory/ntap-20220930-0001/
- https://bugzilla.redhat.com/show_bug.cgi?id=1991686
- https://security.gentoo.org/glsa/202209-12
- https://security.netapp.com/advisory/ntap-20220930-0001/
Products affected by CVE-2021-3696
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cpe:2.3:a:gnu:grub2:2.00
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cpe:2.3:a:gnu:grub2:2.01
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cpe:2.3:a:gnu:grub2:2.02
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cpe:2.3:a:gnu:grub2:2.04
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cpe:2.3:a:gnu:grub2:2.06
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cpe:2.3:a:gnu:grub2:2.06-150400.7.1
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cpe:2.3:a:gnu:grub2:2.06-18.1
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cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-
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cpe:2.3:a:redhat:codeready_linux_builder:-
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cpe:2.3:a:redhat:developer_tools:1.0
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cpe:2.3:a:redhat:openshift:3.0
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cpe:2.3:a:redhat:openshift_container_platform:4.10
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cpe:2.3:a:redhat:openshift_container_platform:4.6
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cpe:2.3:a:redhat:openshift_container_platform:4.9
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cpe:2.3:o:redhat:enterprise_linux:8.0
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cpe:2.3:o:redhat:enterprise_linux:8.1
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cpe:2.3:o:redhat:enterprise_linux:8.4
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cpe:2.3:o:redhat:enterprise_linux:9.0
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cpe:2.3:o:redhat:enterprise_linux_eus:8.2
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cpe:2.3:o:redhat:enterprise_linux_eus:8.4
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cpe:2.3:o:redhat:enterprise_linux_eus:8.6
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cpe:2.3:o:redhat:enterprise_linux_eus:9.0
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cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0
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cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:9.0
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cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.2
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cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.4
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cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.6
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cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:9.0
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cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2
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cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4
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cpe:2.3:o:redhat:enterprise_linux_server_aus:8.6
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Redhat » Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions » Version: 8.1cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.1
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Redhat » Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions » Version: 8.2cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.2
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Redhat » Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions » Version: 8.4cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.4
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Redhat » Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions » Version: 8.6cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.6
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Redhat » Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions » Version: 9.0cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:9.0
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cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2
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cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4
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cpe:2.3:o:redhat:enterprise_linux_server_tus:8.6