{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-21829 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-21829 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-21829 is a high-severity memory corruption vulnerability in AT\u0026T, published on 13 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-21829 and fix it if it is affected.\n\nWhat it is: CVE-2021-21829 is a high-severity memory corruption vulnerability in AT\u0026T, published on 13 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-21829 in the wild and no public exploit code.\n\nAffected product: AT\u0026T. 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-2021-21829/ (Markdown: https://insights.sbomify.com/CVE-2021-21829/index.md)","id":"CVE-2021-21829","markdown":"https://insights.sbomify.com/CVE-2021-21829/index.md","name":"CVE-2021-21829","record":{"aliases":["GHSA-whj6-8xvc-hmjm"],"analysis":{"component_type":"library","fix_type":"no_fix_stated","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"XMI parsing library","requires_auth":"none","summary":"A heap-based buffer overflow in Xmill allows remote code execution via a specially crafted XMI file.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"talos","cpe":[{"product":"xmill","vendor":"att"}],"cvss":{"score":8.1,"severity":"high","source":"cna","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.0"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"},{"id":"CWE-122","name":"Heap-based Buffer Overflow"}],"description":"A heap-based buffer overflow vulnerability exists in the XML Decompression EnumerationUncompressor::UncompressItem functionality of AT\u0026T Labs’ Xmill 0.7. A specially crafted XMI file can lead to remote code execution. An attacker can provide a malicious file to trigger this vulnerability.","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":"Memory corruption in AT\u0026T","id":"CVE-2021-21829","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Memory corruption in AT\u0026T","id":"CVE-2021-21830"},"packages":[],"prev":{"headline":"Memory corruption in AT\u0026T","id":"CVE-2021-21828"},"products":["AT\u0026T"],"published":"2021-08-13","related":[{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2022-26507","kev_date_added":null,"published":"2022-04-14"},{"cvss_score":8.1,"headline":"Memory corruption in AT\u0026T","id":"CVE-2021-21811","kev_date_added":null,"published":"2021-08-31"},{"cvss_score":8.1,"headline":"Memory corruption in AT\u0026T","id":"CVE-2021-21826","kev_date_added":null,"published":"2021-08-20"},{"cvss_score":8.1,"headline":"Memory corruption in AT\u0026T","id":"CVE-2021-21827","kev_date_added":null,"published":"2021-08-20"},{"cvss_score":8.1,"headline":"Memory corruption in AT\u0026T","id":"CVE-2021-21828","kev_date_added":null,"published":"2021-08-20"},{"cvss_score":8.1,"headline":"Memory corruption in AT\u0026T","id":"CVE-2021-21825","kev_date_added":null,"published":"2021-08-18"},{"cvss_score":8.1,"headline":"Memory corruption in AT\u0026T Labs","id":"CVE-2021-21810","kev_date_added":null,"published":"2021-08-17"}],"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 heap-based buffer overflow in Xmill allows remote code execution via a specially crafted XMI file.","url":"https://insights.sbomify.com/CVE-2021-21829/"}