{"answers":{"affected":"3 open source packages ship an affected version, including github.com/ulikunitz/xz. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-29482 in the wild and no public exploit code.","fix":"Upgrade github.com/ulikunitz/xz to 0.5.8 or later.","what":"CVE-2021-29482 is a high-severity denial of service vulnerability in ulikunitz xz, published on 28 Apr 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-2021-29482 and fix it if it is affected.\n\nWhat it is: CVE-2021-29482 is a high-severity denial of service vulnerability in ulikunitz xz, published on 28 Apr 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-2021-29482 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/ulikunitz/xz (Go): affected all versions; fixed in 0.5.8\n- github.com/ulikunitz/xz (Go): affected all versions; fixed in 0.5.8\n- github.com/ulikunitz/xz (Go): affected all versions; fixed in 0.5.8\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-2021-29482/ (Markdown: https://insights.sbomify.com/CVE-2021-29482/index.md)","id":"CVE-2021-29482","markdown":"https://insights.sbomify.com/CVE-2021-29482/index.md","name":"CVE-2021-29482","record":{"aliases":["DEBIAN-CVE-2021-29482","GHSA-25xm-hr59-7c27","GO-2020-0016","UBUNTU-CVE-2021-29482"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Go xz compression library","requires_auth":"none","summary":"An attacker can cause a denial of service by providing malicious input to the xz decompression library, leading to an infinite loop.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"xz","vendor":"xz_project"}],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-835","name":"Loop with Unreachable Exit Condition"}],"description":"xz is a compression and decompression library focusing on the xz format completely written in Go. The function readUvarint used to read the xz container format may not terminate a loop provide malicous input. The problem has been fixed in release v0.5.8. As a workaround users can limit the size of the compressed file input to a reasonable size for their use case. The standard library had recently the same issue and got the CVE-2020-16845 allocated.","ecosystems":["Go"],"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":"denial of service in github.com/ulikunitz/xz","id":"CVE-2021-29482","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"denial_of_service","year":"2021"},"n_packages":3,"n_references":2,"next":{"headline":"wikiconfig API leaked private config variables set through ManageWiki","id":"CVE-2021-29483"},"packages":[{"ecosystem":"Go","fixed":["0.5.8"],"introduced":["0"],"last_affected":[],"package":"github.com/ulikunitz/xz","purl":null,"source":"GHSA-25xm-hr59-7c27"},{"ecosystem":"Go","fixed":["0.5.8"],"introduced":["0"],"last_affected":[],"package":"github.com/ulikunitz/xz","purl":"pkg:golang/github.com/ulikunitz/xz","source":"GHSA-25xm-hr59-7c27"},{"ecosystem":"Go","fixed":["0.5.8"],"introduced":["0"],"last_affected":[],"package":"github.com/ulikunitz/xz","purl":"pkg:golang/github.com/ulikunitz/xz","source":"GO-2020-0016"}],"prev":{"headline":"Client side sessions should not allow unencrypted storage","id":"CVE-2021-29481"},"products":["xz"],"published":"2021-04-28","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"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":["ulikunitz"]},"summary":"An attacker can cause a denial of service by providing malicious input to the xz decompression library, leading to an infinite loop.","url":"https://insights.sbomify.com/CVE-2021-29482/"}