{"answers":{"affected":"4 open source packages ship an affected version, including pillow. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-25291 in the wild and no public exploit code.","fix":"Upgrade pillow to a fixed version for your release line: 8.1.1 or 8.2.0.","what":"CVE-2021-25291 is a high-severity memory corruption vulnerability in Python Pillow, published on 19 Mar 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-2021-25291 and fix it if it is affected.\n\nWhat it is: CVE-2021-25291 is a high-severity memory corruption vulnerability in Python Pillow, published on 19 Mar 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-2021-25291 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- pillow (Bitnami): affected all versions; fixed in 8.1.1\n- pillow (PyPI): affected all versions; fixed in 8.1.1\n- pillow (PyPI): affected all versions; fixed in 8.2.0\n- pillow (PyPI): affected all versions; fixed in 8.2.0\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-2021-25291/ (Markdown: https://insights.sbomify.com/CVE-2021-25291/index.md)","id":"CVE-2021-25291","markdown":"https://insights.sbomify.com/CVE-2021-25291/index.md","name":"CVE-2021-25291","record":{"aliases":["ALPINE-CVE-2021-25291","BIT-pillow-2021-25291","DEBIAN-CVE-2021-25291","GHSA-mvg9-xffr-p774","PYSEC-2021-37","UBUNTU-CVE-2021-25291"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Python image library","requires_auth":"none","summary":"An out-of-bounds read in Pillow's TIFF decoder allows attackers to cause denial of service or disclose sensitive memory contents via crafted images.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"pillow","vendor":"python"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","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-125","name":"Out-of-bounds Read"}],"description":"An issue was discovered in Pillow before 8.1.1. In TiffDecode.c, there is an out-of-bounds read in TiffreadRGBATile via invalid tile boundaries.","ecosystems":["Bitnami","PyPI"],"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":"Out of bounds read in Pillow","id":"CVE-2021-25291","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"python:pillow","products":["python:pillow"],"type":"memory_corruption","year":"2021"},"n_packages":4,"n_references":2,"next":{"headline":"Regular Expression Denial of Service (ReDoS) in Pillow","id":"CVE-2021-25292"},"packages":[{"ecosystem":"Bitnami","fixed":["8.1.1"],"introduced":["0"],"last_affected":[],"package":"pillow","purl":"pkg:bitnami/pillow","source":"BIT-pillow-2021-25291"},{"ecosystem":"PyPI","fixed":["8.1.1"],"introduced":["0"],"last_affected":[],"package":"pillow","purl":"pkg:pypi/pillow","source":"PYSEC-2021-37"},{"ecosystem":"PyPI","fixed":["8.2.0"],"introduced":["0"],"last_affected":[],"package":"pillow","purl":null,"source":"GHSA-mvg9-xffr-p774"},{"ecosystem":"PyPI","fixed":["8.2.0"],"introduced":["0"],"last_affected":[],"package":"pillow","purl":"pkg:pypi/pillow","source":"GHSA-mvg9-xffr-p774"}],"prev":{"headline":"Out-of-bounds Write in Pillow","id":"CVE-2021-25290"},"products":["n/a"],"published":"2021-03-19","related":[{"cvss_score":10,"headline":"Pillow command injection","id":"CVE-2014-3007","kev_date_added":null,"published":"2014-04-27"},{"cvss_score":9.8,"headline":"Pillow multi-frame loaders can reuse stale native image storage after mode transitions","id":"CVE-2026-96639","kev_date_added":null,"published":"2026-10-21"},{"cvss_score":9.8,"headline":"Buffer over-flow in Pillow","id":"CVE-2022-30595","kev_date_added":null,"published":"2022-05-25"},{"cvss_score":9.8,"headline":"Out of bounds write in Pillow","id":"CVE-2021-25289","kev_date_added":null,"published":"2021-03-19"},{"cvss_score":9.8,"headline":"Pillow Integer overflow in ImagingResampleHorizontal","id":"CVE-2016-4009","kev_date_added":null,"published":"2016-04-13"},{"cvss_score":9.2,"headline":"Pillow: Heap buffer overflow in _tiffWriteProc when saving TIFF to BytesIO","id":"CVE-2026-112393","kev_date_added":null,"published":"2026-10-19"},{"cvss_score":9.2,"headline":"Pillow: Heap buffer overflow in FlashPix (FPX) JPEG decoding leads to code execution","id":"CVE-2026-112398","kev_date_added":null,"published":"2026-10-19"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"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":"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["n/a"]},"summary":"An out-of-bounds read in Pillow's TIFF decoder allows attackers to cause denial of service or disclose sensitive memory contents via crafted images.","url":"https://insights.sbomify.com/CVE-2021-25291/"}