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-2862732
- published 8 Jun 2022
- disclosed 6 Jul 2022
Introduced: 8 Jun 2022
CVE-2021-3697 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 crafted JPEG image may lead the JPEG reader to underflow its data pointer, allowing user-controlled data to be written in heap. To a successful to be performed the attacker needs to perform some triage over the heap layout and craft an image with a malicious format and payload. This vulnerability can lead to data corruption and eventual code execution or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.
References
- https://linux.oracle.com/cve/CVE-2021-3697.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=1991687
- https://security.gentoo.org/glsa/202209-12
- https://security.netapp.com/advisory/ntap-20220930-0001/