{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-18839 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2020-18839 is a medium-severity memory corruption vulnerability in Freedesktop Poppler, published on 22 Aug 2023. 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-2020-18839 and fix it if it is affected.\n\nWhat it is: CVE-2020-18839 is a medium-severity memory corruption vulnerability in Freedesktop Poppler, published on 22 Aug 2023. 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-2020-18839 exists.\n\nAffected product: Freedesktop Poppler. 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-2020-18839/ (Markdown: https://insights.sbomify.com/CVE-2020-18839/index.md)","id":"CVE-2020-18839","markdown":"https://insights.sbomify.com/CVE-2020-18839/index.md","name":"CVE-2020-18839","record":{"aliases":["DEBIAN-CVE-2020-18839","GHSA-9qxr-688p-9w44"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Poppler PDF library","requires_auth":"none","summary":"A buffer overflow in the Poppler PDF library allows attackers to cause a denial of service via crafted PDF files.","user_interaction":"required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"poppler","vendor":"freedesktop"}],"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-787","name":"Out-of-bounds Write"}],"description":"Buffer Overflow vulnerability in HtmlOutputDev::page in poppler 0.75.0 allows attackers to cause a denial of service.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Memory corruption in n/a","id":"CVE-2020-18839","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"freedesktop:poppler","products":["freedesktop:poppler"],"type":"memory_corruption","year":"2020"},"n_packages":0,"n_references":1,"next":{"headline":"Code injection in n/a","id":"CVE-2020-18875"},"packages":[],"prev":{"headline":"Memory corruption in n/a","id":"CVE-2020-18831"},"products":["n/a"],"published":"2023-08-22","related":[{"cvss_score":8.8,"headline":"Integer overflow in n/a","id":"CVE-2018-21009","kev_date_added":null,"published":"2019-09-05"},{"cvss_score":8.8,"headline":"Memory corruption in n/a","id":"CVE-2019-12293","kev_date_added":null,"published":"2019-05-23"},{"cvss_score":8.8,"headline":"Memory corruption in n/a","id":"CVE-2019-10872","kev_date_added":null,"published":"2019-04-05"},{"cvss_score":8.8,"headline":"Denial of service in n/a","id":"CVE-2019-9543","kev_date_added":null,"published":"2019-03-01"},{"cvss_score":8.8,"headline":"Denial of service in n/a","id":"CVE-2019-9545","kev_date_added":null,"published":"2019-03-01"},{"cvss_score":8.8,"headline":"Integer overflow in Poppler","id":"CVE-2017-2820","kev_date_added":null,"published":"2017-07-12"},{"cvss_score":7.8,"headline":"Integer overflow in n/a","id":"CVE-2022-38171","kev_date_added":null,"published":"2022-08-22"}],"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":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2024-10-04","vendors":["n/a"]},"summary":"A buffer overflow in the Poppler PDF library allows attackers to cause a denial of service via crafted PDF files.","url":"https://insights.sbomify.com/CVE-2020-18839/"}