{"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-2020-18831 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2020-18831 is a high-severity memory corruption vulnerability in Exiv2 Exiv2, published on 22 Aug 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2020-18831 and fix it if it is affected.\n\nWhat it is: CVE-2020-18831 is a high-severity memory corruption vulnerability in Exiv2 Exiv2, published on 22 Aug 2023. It can only be exploited from the same machine or local network, 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-2020-18831 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-2020-18831/ (Markdown: https://insights.sbomify.com/CVE-2020-18831/index.md)","id":"CVE-2020-18831","markdown":"https://insights.sbomify.com/CVE-2020-18831/index.md","name":"CVE-2020-18831","record":{"aliases":["DEBIAN-CVE-2020-18831","GHSA-xwp4-phw7-5mfh","PYSEC-2023-150"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service","other"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Exiv2 image library","requires_auth":"none","summary":"Remote attackers can cause denial of service and other impacts via crafted files due to a buffer overflow in the Exiv2 image library.","user_interaction":"required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"exiv2","vendor":"exiv2"}],"cvss":{"score":7.8,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"Buffer Overflow vulnerability in tEXtToDataBuf function in pngimage.cpp in Exiv2 0.27.1 allows remote attackers to cause a denial of service and other unspecified impacts via use of crafted file.","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":"Memory corruption in n/a","id":"CVE-2020-18831","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":"exiv2:exiv2","products":["exiv2:exiv2"],"type":"memory_corruption","year":"2020"},"n_packages":1,"n_references":2,"next":{"headline":"Memory corruption in n/a","id":"CVE-2020-18839"},"packages":[{"ecosystem":"PyPI","fixed":[],"introduced":["0"],"last_affected":[],"package":"exiv2","purl":"pkg:pypi/exiv2","source":"PYSEC-2023-150"}],"prev":{"headline":"Memory corruption in n/a","id":"CVE-2020-18781"},"products":["n/a"],"published":"2023-08-22","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":"total"},"state":"PUBLISHED","updated":"2024-10-04","vendors":["n/a"]},"summary":"Remote attackers can cause denial of service and other impacts via crafted files due to a buffer overflow in the Exiv2 image library.","url":"https://insights.sbomify.com/CVE-2020-18831/"}