Integer Underflow Affecting grub2-efi-ia32-cdboot package, versions <1:2.02-0.87.0.21.el7_9.9
Threat Intelligence
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk ID SNYK-ORACLE7-GRUB2EFIIA32CDBOOT-2862666
- published 8 Jun 2022
- disclosed 20 Jul 2023
Introduced: 8 Jun 2022
CVE-2022-28733 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.
Integer underflow in grub_net_recv_ip4_packets; A malicious crafted IP packet can lead to an integer underflow in grub_net_recv_ip4_packets() function on rsm->total_len value. Under certain circumstances the total_len value may end up wrapping around to a small integer number which will be used in memory allocation. If the attack succeeds in such way, subsequent operations can write past the end of the buffer.
References
- https://linux.oracle.com/cve/CVE-2022-28733.html
- https://linux.oracle.com/errata/ELSA-2022-5095.html
- https://linux.oracle.com/errata/ELSA-2022-9471.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://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-28733
- https://www.openwall.com/lists/oss-security/2022/06/07/5
- https://security.netapp.com/advisory/ntap-20230825-0002/