CVE-2021-3696
Medium
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.
SeverityMedium
CVSS4.5
Exploit probability42. percentile0.5%
Product
Gnu Grub2
PublishedJul 6, 2022
First seenJul 6, 2022
Weakness typeCWE-787Out-of-bounds write
How to fix
Update
- gnu grub22.12 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| gnu grub2 | 2.00 ≤ v < 2.12 | 2.12 |
| redhat developer_tools | 1.0 | — |
| redhat openshift | 3.0 | — |
| redhat enterprise_linux | 8.0, 8.1, 8.4, 9.0 | — |
| redhat enterprise_linux_eus | 8.2, 8.4, 8.6, 9.0 | — |
| redhat enterprise_linux_for_power_little_endian | 8.0, 9.0 | — |
| redhat enterprise_linux_for_power_little_endian_eus | 8.2, 8.4, 8.6, 9.0 | — |
| redhat enterprise_linux_server_aus | 8.2, 8.4, 8.6 | — |
| redhat enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions | 8.1, 8.2, 8.4, 8.6, 9.0 | — |
| redhat enterprise_linux_server_tus | 8.2, 8.4, 8.6 | — |
| redhat openshift_container_platform | 4.6, 4.9, 4.10 | — |
| redhat codeready_linux_builder | No range specified | — |
| netapp ontap_select_deploy_administration_utility | No range specified | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.