Out-of-bounds Write Affecting grub2-efi-ia32-cdboot package, versions <1:2.02-0.87.0.21.el7_9.9
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Test your applications- Snyk ID SNYK-ORACLE7-GRUB2EFIIA32CDBOOT-2862555
- published 8 Jun 2022
- disclosed 6 Jul 2022
Introduced: 8 Jun 2022
CVE-2021-3696 Open this link in a new tabHow to fix?
Upgrade Oracle:7 grub2-efi-ia32-cdboot to version 1:2.02-0.87.0.21.el7_9.9 or higher.
This issue was patched in ELSA-2022-9469.
NVD Description
Note: Versions mentioned in the description apply only to the upstream grub2-efi-ia32-cdboot package and not the grub2-efi-ia32-cdboot package as distributed by Oracle.
See How to fix? for Oracle:7 relevant fixed versions and status.
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.
References
- https://linux.oracle.com/cve/CVE-2021-3696.html
- https://linux.oracle.com/errata/ELSA-2022-5095.html
- https://linux.oracle.com/errata/ELSA-2022-9469.html
- https://linux.oracle.com/errata/ELSA-2022-9595.html
- https://linux.oracle.com/errata/ELSA-2022-9596.html
- https://linux.oracle.com/errata/ELSA-2023-12952.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1991686
- https://security.gentoo.org/glsa/202209-12
- https://security.netapp.com/advisory/ntap-20220930-0001/