{"answers":{"affected":"It affects 6 products.","exploited":"There is no known exploitation of CVE-2021-42114 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-42114 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-42114 is a critical vulnerability in Micron ddr4_sdram, published on 16 Nov 2021."},"fix_prompt":"Check this codebase for CVE-2021-42114 and fix it if it is affected.\n\nWhat it is: CVE-2021-42114 is a critical vulnerability in Micron ddr4_sdram, published on 16 Nov 2021. \nExploitation: There is no known exploitation of CVE-2021-42114 in the wild and no public exploit code.\n\nAffected product: Micron ddr4_sdram. 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-2021-42114/ (Markdown: https://insights.sbomify.com/CVE-2021-42114/index.md)","id":"CVE-2021-42114","markdown":"https://insights.sbomify.com/CVE-2021-42114/index.md","name":"CVE-2021-42114","record":{"aliases":["GHSA-6wv8-rx52-7p78"],"analysis":null,"analysis_generated_by":null,"assigner":"NCSC.ch","cpe":[{"product":"ddr4_sdram_firmware","vendor":"micron"},{"product":"lddr4_firmware","vendor":"micron"},{"product":"ddr4_sdram_firmware","vendor":"samsung"},{"product":"lddr4_firmware","vendor":"samsung"},{"product":"ddr4_sdram_firmware","vendor":"skhynix"},{"product":"lddr4_firmware","vendor":"skhynix"}],"cvss":{"score":9,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"description":"Modern DRAM devices (PC-DDR4, LPDDR4X) are affected by a vulnerability in their internal Target Row Refresh (TRR) mitigation against Rowhammer attacks. Novel non-uniform Rowhammer access patterns, consisting of aggressors with different frequencies, phases, and amplitudes allow triggering bit flips on affected memory modules using our Blacksmith fuzzer. The patterns generated by Blacksmith were able to trigger bitflips on all 40 PC-DDR4 DRAM devices in our test pool, which cover the three major DRAM manufacturers: Samsung, SK Hynix, and Micron. This means that, even when chips advertised as Rowhammer-free are used, attackers may still be able to exploit Rowhammer. For example, this enables privilege-escalation attacks against the kernel or binaries such as the sudo binary, and also triggering bit flips in RSA-2048 keys (e.g., SSH keys) to gain cross-tenant virtual-machine access. We can confirm that DRAM devices acquired in July 2020 with DRAM chips from all three major DRAM vendors (Samsung, SK Hynix, Micron) are affected by this vulnerability. For more details, please refer to our publication.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Scalable Rowhammering In the Frequency Domain to Bypass TRR Mitigations On Modern DDR4/LPDDR4X Devices","id":"CVE-2021-42114","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2021"},"n_packages":0,"n_references":3,"next":{"headline":"Missing HTTPOnly flag on sensitive cookie in TopEase","id":"CVE-2021-42115"},"packages":[],"prev":{"headline":"Privilege escalation in n/a","id":"CVE-2021-42113"},"products":["Micron ddr4_sdram","Micron lpddr4","SK Hynix ddr4_sdram","SK Hynix lpddr4","Samsung ddr4_sdram","Samsung lpddr4"],"published":"2021-11-16","related":[],"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":"2024-09-17","vendors":["Micron","SK Hynix","Samsung"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2021-42114/"}