Out-of-bounds Write Affecting shim-aa64 package, versions <0:15.6-1.el8
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Test your applications- Snyk ID SNYK-RHEL8-SHIMAA64-4286571
- published 9 Jun 2022
- disclosed 7 Jun 2022
Introduced: 7 Jun 2022
CVE-2022-28734 Open this link in a new tabHow to fix?
Upgrade RHEL:8 shim-aa64 to version 0:15.6-1.el8 or higher.
This issue was patched in RHSA-2022:5095.
NVD Description
Note: Versions mentioned in the description apply only to the upstream shim-aa64 package and not the shim-aa64 package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
Out-of-bounds write when handling split HTTP headers; When handling split HTTP headers, GRUB2 HTTP code accidentally moves its internal data buffer point by one position. This can lead to a out-of-bound write further when parsing the HTTP request, writing a NULL byte past the buffer. It's conceivable that an attacker controlled set of packets can lead to corruption of the GRUB2's internal memory metadata.