{"answers":{"affected":"1 open source package ship an affected version, including exiv2. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-18899 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2020-18899 is a medium-severity denial of service vulnerability in Exiv2 Exiv2, published on 19 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-2020-18899 and fix it if it is affected.\n\nWhat it is: CVE-2020-18899 is a medium-severity denial of service vulnerability in Exiv2 Exiv2, published on 19 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: It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-18899 exists.\n\nAffected packages and fixed versions:\n- exiv2 (PyPI): affected all versions; no fix listed\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-2020-18899/ (Markdown: https://insights.sbomify.com/CVE-2020-18899/index.md)","id":"CVE-2020-18899","markdown":"https://insights.sbomify.com/CVE-2020-18899/index.md","name":"CVE-2020-18899","record":{"aliases":["DEBIAN-CVE-2020-18899","GHSA-44mj-pwh6-pw78","PYSEC-2021-879"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Exiv2 image library","requires_auth":"none","summary":"Attackers can cause a denial of service in applications using Exiv2 by providing crafted input that triggers uncontrolled memory allocation.","user_interaction":"required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"exiv2","vendor":"exiv2"}],"cvss":{"score":6.5,"severity":"medium","source":"cisa-adp","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-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"An uncontrolled memory allocation in DataBufdata(subBox.length-sizeof(box)) function of Exiv2 0.27 allows attackers to cause a denial of service (DOS) via a crafted input.","ecosystems":["PyPI"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Denial of service in n/a","id":"CVE-2020-18899","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":"exiv2:exiv2","products":["exiv2:exiv2"],"type":"denial_of_service","year":"2020"},"n_packages":1,"n_references":3,"next":{"headline":"Memory corruption in n/a","id":"CVE-2020-18900"},"packages":[{"ecosystem":"PyPI","fixed":[],"introduced":["0"],"last_affected":[],"package":"exiv2","purl":"pkg:pypi/exiv2","source":"PYSEC-2021-879"}],"prev":{"headline":"Denial of service in n/a","id":"CVE-2020-18898"},"products":["n/a"],"published":"2021-08-19","related":[{"cvss_score":8.8,"headline":"Out-of-bounds write in exiv2","id":"CVE-2023-44398","kev_date_added":null,"published":"2023-11-06"},{"cvss_score":8.8,"headline":"Denial of service in n/a","id":"CVE-2019-9143","kev_date_added":null,"published":"2019-02-25"},{"cvss_score":8.8,"headline":"Denial of service in n/a","id":"CVE-2019-9144","kev_date_added":null,"published":"2019-02-25"},{"cvss_score":8.8,"headline":"Memory corruption in n/a","id":"CVE-2018-14046","kev_date_added":null,"published":"2018-07-13"},{"cvss_score":8.8,"headline":"Memory corruption in n/a","id":"CVE-2017-12955","kev_date_added":null,"published":"2017-08-18"},{"cvss_score":8.1,"headline":"Memory corruption in n/a","id":"CVE-2018-14338","kev_date_added":null,"published":"2018-07-17"},{"cvss_score":8.1,"headline":"Information disclosure in n/a","id":"CVE-2018-9305","kev_date_added":null,"published":"2018-04-04"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"PyPA Advisory Database","prefix":"PYSEC"},{"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":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2024-10-15","vendors":["n/a"]},"summary":"Attackers can cause a denial of service in applications using Exiv2 by providing crafted input that triggers uncontrolled memory allocation.","url":"https://insights.sbomify.com/CVE-2020-18899/"}