{"id":"ALPINE-CVE-2021-3697","details":"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.","modified":"2025-12-03T22:49:00.957305Z","published":"2022-07-06T16:15:08.320Z","upstream":["CVE-2021-3697"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2021-3697"}],"affected":[{"package":{"name":"grub","ecosystem":"Alpine:v3.15","purl":"pkg:apk/alpine/grub?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.06-r3"}]}],"versions":["2.02-r0","2.02-r1","2.02-r10","2.02-r11","2.02-r12","2.02-r13","2.02-r14","2.02-r15","2.02-r16","2.02-r17","2.02-r18","2.02-r19","2.02-r2","2.02-r20","2.02-r3","2.02-r4","2.02-r5","2.02-r6","2.02-r7","2.02-r8","2.02-r9","2.02_beta3-r0","2.02_beta3-r1","2.02_beta3-r2","2.02_beta3-r3","2.02_beta3-r4","2.02_beta3-r5","2.02_beta3-r6","2.02_beta3-r7","2.04-r0","2.04-r1","2.04-r2","2.04-r3","2.06-r0","2.06-r1","2.06-r2"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3697.json"}},{"package":{"name":"grub","ecosystem":"Alpine:v3.16","purl":"pkg:apk/alpine/grub?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.06-r3"}]}],"versions":["2.02-r0","2.02-r1","2.02-r10","2.02-r11","2.02-r12","2.02-r13","2.02-r14","2.02-r15","2.02-r16","2.02-r17","2.02-r18","2.02-r19","2.02-r2","2.02-r20","2.02-r3","2.02-r4","2.02-r5","2.02-r6","2.02-r7","2.02-r8","2.02-r9","2.02_beta3-r0","2.02_beta3-r1","2.02_beta3-r2","2.02_beta3-r3","2.02_beta3-r4","2.02_beta3-r5","2.02_beta3-r6","2.02_beta3-r7","2.04-r0","2.04-r1","2.04-r2","2.04-r3","2.06-r0","2.06-r1","2.06-r2"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3697.json"}},{"package":{"name":"grub","ecosystem":"Alpine:v3.17","purl":"pkg:apk/alpine/grub?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.06-r8"}]}],"versions":["2.02-r0","2.02-r1","2.02-r10","2.02-r11","2.02-r12","2.02-r13","2.02-r14","2.02-r15","2.02-r16","2.02-r17","2.02-r18","2.02-r19","2.02-r2","2.02-r20","2.02-r3","2.02-r4","2.02-r5","2.02-r6","2.02-r7","2.02-r8","2.02-r9","2.02_beta3-r0","2.02_beta3-r1","2.02_beta3-r2","2.02_beta3-r3","2.02_beta3-r4","2.02_beta3-r5","2.02_beta3-r6","2.02_beta3-r7","2.04-r0","2.04-r1","2.04-r2","2.04-r3","2.06-r0","2.06-r1","2.06-r2","2.06-r3","2.06-r4","2.06-r5","2.06-r6","2.06-r7"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3697.json"}},{"package":{"name":"grub","ecosystem":"Alpine:v3.18","purl":"pkg:apk/alpine/grub?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.06-r12"}]}],"versions":["2.02-r0","2.02-r1","2.02-r10","2.02-r11","2.02-r12","2.02-r13","2.02-r14","2.02-r15","2.02-r16","2.02-r17","2.02-r18","2.02-r19","2.02-r2","2.02-r20","2.02-r3","2.02-r4","2.02-r5","2.02-r6","2.02-r7","2.02-r8","2.02-r9","2.02_beta3-r0","2.02_beta3-r1","2.02_beta3-r2","2.02_beta3-r3","2.02_beta3-r4","2.02_beta3-r5","2.02_beta3-r6","2.02_beta3-r7","2.04-r0","2.04-r1","2.04-r2","2.04-r3","2.06-r0","2.06-r1","2.06-r10","2.06-r11","2.06-r2","2.06-r3","2.06-r4","2.06-r5","2.06-r6","2.06-r7","2.06-r8","2.06-r9"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3697.json"}},{"package":{"name":"grub","ecosystem":"Alpine:v3.19","purl":"pkg:apk/alpine/grub?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.06-r13"}]}],"versions":["2.02-r0","2.02-r1","2.02-r10","2.02-r11","2.02-r12","2.02-r13","2.02-r14","2.02-r15","2.02-r16","2.02-r17","2.02-r18","2.02-r19","2.02-r2","2.02-r20","2.02-r3","2.02-r4","2.02-r5","2.02-r6","2.02-r7","2.02-r8","2.02-r9","2.02_beta3-r0","2.02_beta3-r1","2.02_beta3-r2","2.02_beta3-r3","2.02_beta3-r4","2.02_beta3-r5","2.02_beta3-r6","2.02_beta3-r7","2.04-r0","2.04-r1","2.04-r2","2.04-r3","2.06-r0","2.06-r1","2.06-r10","2.06-r11","2.06-r12","2.06-r2","2.06-r3","2.06-r4","2.06-r5","2.06-r6","2.06-r7","2.06-r8","2.06-r9"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3697.json"}},{"package":{"name":"grub","ecosystem":"Alpine:v3.20","purl":"pkg:apk/alpine/grub?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.06-r13"}]}],"versions":["2.02-r0","2.02-r1","2.02-r10","2.02-r11","2.02-r12","2.02-r13","2.02-r14","2.02-r15","2.02-r16","2.02-r17","2.02-r18","2.02-r19","2.02-r2","2.02-r20","2.02-r3","2.02-r4","2.02-r5","2.02-r6","2.02-r7","2.02-r8","2.02-r9","2.02_beta3-r0","2.02_beta3-r1","2.02_beta3-r2","2.02_beta3-r3","2.02_beta3-r4","2.02_beta3-r5","2.02_beta3-r6","2.02_beta3-r7","2.04-r0","2.04-r1","2.04-r2","2.04-r3","2.06-r0","2.06-r1","2.06-r10","2.06-r11","2.06-r12","2.06-r2","2.06-r3","2.06-r4","2.06-r5","2.06-r6","2.06-r7","2.06-r8","2.06-r9"],"ecosystem_specific":{},"database_specific":{"source":"https:/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