{"answers":{"affected":"It affects 12 products.","exploited":"There is no known exploitation of CVE-2021-3697 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2021-3697 is a high-severity memory corruption vulnerability in Redhat Enterprise Linux, published on 6 Jul 2022. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-3697 and fix it if it is affected.\n\nWhat it is: CVE-2021-3697 is a high-severity memory corruption vulnerability in Redhat Enterprise Linux, published on 6 Jul 2022. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-3697 in the wild and no public exploit code.\n\nAffected product: Redhat Enterprise Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2021-3697/ (Markdown: https://insights.sbomify.com/CVE-2021-3697/index.md)","id":"CVE-2021-3697","markdown":"https://insights.sbomify.com/CVE-2021-3697/index.md","name":"CVE-2021-3697","record":{"aliases":["ALPINE-CVE-2021-3697","AZL-31036","AZL-34785","DEBIAN-CVE-2021-3697","GHSA-pr45-j47f-755r","UBUNTU-CVE-2021-3697"],"analysis":{"component_type":"operating_system","fix_type":"upgrade","impacts":["code_execution","security_bypass"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"GRUB2 bootloader","requires_auth":"low_privilege","summary":"A crafted JPEG image can cause heap underflow in GRUB2, potentially allowing code execution or secure boot circumvention.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"grub2","vendor":"gnu"},{"product":"codeready_linux_builder","vendor":"redhat"},{"product":"developer_tools","vendor":"redhat"},{"product":"enterprise_linux","vendor":"redhat"},{"product":"enterprise_linux_eus","vendor":"redhat"},{"product":"enterprise_linux_for_power_little_endian","vendor":"redhat"},{"product":"enterprise_linux_for_power_little_endian_eus","vendor":"redhat"},{"product":"enterprise_linux_server_aus","vendor":"redhat"},{"product":"enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions","vendor":"redhat"},{"product":"enterprise_linux_server_tus","vendor":"redhat"},{"product":"openshift","vendor":"redhat"},{"product":"openshift_container_platform","vendor":"redhat"}],"cvss":{"score":7,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"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.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Memory corruption in grub2","id":"CVE-2021-3697","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"redhat:enterprise_linux","products":["redhat:enterprise_linux","redhat:enterprise_linux_eus","redhat:enterprise_linux_for_power_little_endian","redhat:enterprise_linux_for_power_little_endian_eus","redhat:enterprise_linux_server_aus","redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions","redhat:enterprise_linux_server_tus","redhat:openshift","redhat:openshift_container_platform"],"type":"memory_corruption","year":"2021"},"n_packages":0,"n_references":3,"next":{"headline":"Security feature bypass in cockpit","id":"CVE-2021-3698"},"packages":[],"prev":{"headline":"Memory corruption in grub2","id":"CVE-2021-3696"},"products":["grub2"],"published":"2022-07-06","related":[{"cvss_score":8.8,"headline":"Memory corruption in GRUB2","id":"CVE-2024-56737","kev_date_added":null,"published":"2024-12-29"},{"cvss_score":8.1,"headline":"Integer underflow in grub_net_recv_ip4_packets","id":"CVE-2022-28733","kev_date_added":null,"published":"2023-07-20"},{"cvss_score":8.1,"headline":"Out-of-bounds write when handling split HTTP headers","id":"CVE-2022-28734","kev_date_added":null,"published":"2023-07-20"},{"cvss_score":7.8,"headline":"Grub2: missing unregister call for gettext command may lead to use-after-free","id":"CVE-2025-61662","kev_date_added":null,"published":"2025-11-18"},{"cvss_score":7.8,"headline":"Grub2: fs/hfs: strcpy() using the volume name (fs/hfs.c:382)","id":"CVE-2024-45782","kev_date_added":null,"published":"2025-03-03"},{"cvss_score":7.8,"headline":"Grub2: squash4: integer overflow may lead to heap based out-of-bounds write when reading data","id":"CVE-2025-0678","kev_date_added":null,"published":"2025-03-03"},{"cvss_score":7.8,"headline":"Grub2: udf: heap based buffer overflow in grub_udf_read_block() may lead to arbitrary code execution","id":"CVE-2025-0689","kev_date_added":null,"published":"2025-03-03"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["n/a"]},"summary":"A crafted JPEG image can cause heap underflow in GRUB2, potentially allowing code execution or secure boot circumvention.","url":"https://insights.sbomify.com/CVE-2021-3697/"}