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PRIOn knowledge basePRION:CVE-2021-3697HistoryJul 06, 2022 - 4:15 p.m.
Design/Logic Flaw
2022-07-0616:15:00
PRIOn knowledge base
www.prio-n.com
10
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.
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