{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-18776 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2020-18776 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-18776 is a medium-severity denial of service vulnerability in Libav Libav, published on 23 Aug 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2020-18776 and fix it if it is affected.\n\nWhat it is: CVE-2020-18776 is a medium-severity denial of service vulnerability in Libav Libav, published on 23 Aug 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2020-18776 in the wild and no public exploit code.\n\nAffected product: Libav Libav. 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-2020-18776/ (Markdown: https://insights.sbomify.com/CVE-2020-18776/index.md)","id":"CVE-2020-18776","markdown":"https://insights.sbomify.com/CVE-2020-18776/index.md","name":"CVE-2020-18776","record":{"aliases":["GHSA-2wm2-q986-vfw5","UBUNTU-CVE-2020-18776"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Libav media library","requires_auth":"none","summary":"An attacker can cause a denial of service via a crafted file due to a segmentation fault in the Libav media library.","user_interaction":"required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"libav","vendor":"libav"}],"cvss":{"score":6.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-125","name":"Out-of-bounds Read"}],"description":"In Libav 12.3, there is a segmentation fault in vc1_decode_b_mb_intfr in vc1_block.c that allows an attacker to cause denial-of-service via a crafted file.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Denial of service in n/a","id":"CVE-2020-18776","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"libav:libav","products":["libav:libav"],"type":"denial_of_service","year":"2020"},"n_packages":0,"n_references":1,"next":{"headline":"Memory corruption in n/a","id":"CVE-2020-18778"},"packages":[],"prev":{"headline":"Memory corruption in n/a","id":"CVE-2020-18775"},"products":["n/a"],"published":"2021-08-23","related":[{"cvss_score":10,"headline":"Multiple unspecified vulnerabilities in Libav before 0.8.12 allow remote attackers to have unknown impact and vectors.","id":"CVE-2014-3984","kev_date_added":null,"published":"2014-06-06"},{"cvss_score":9.8,"headline":"Null dereference in n/a","id":"CVE-2017-9051","kev_date_added":null,"published":"2017-05-18"},{"cvss_score":8.8,"headline":"Integer overflow in n/a","id":"CVE-2014-4609","kev_date_added":null,"published":"2020-01-14"},{"cvss_score":8.8,"headline":"Memory corruption in n/a","id":"CVE-2019-9719","kev_date_added":null,"published":"2019-09-19"},{"cvss_score":8.8,"headline":"Memory corruption in n/a","id":"CVE-2018-5766","kev_date_added":null,"published":"2018-01-18"},{"cvss_score":8.8,"headline":"Memory corruption in n/a","id":"CVE-2018-5684","kev_date_added":null,"published":"2018-01-14"},{"cvss_score":8.8,"headline":"Null dereference in n/a","id":"CVE-2017-17129","kev_date_added":null,"published":"2017-12-04"}],"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":"2024-08-04","vendors":["n/a"]},"summary":"An attacker can cause a denial of service via a crafted file due to a segmentation fault in the Libav media library.","url":"https://insights.sbomify.com/CVE-2020-18776/"}