{"answers":{"affected":"4 open source packages ship an affected version, including pillow. It affects 2 products.","exploited":"There is no known exploitation of CVE-2021-23437 in the wild and no public exploit code.","fix":"Upgrade pillow to 8.3.2 or later.","what":"CVE-2021-23437 is a high-severity denial of service vulnerability in Fedoraproject Fedora, published on 3 Sep 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-2021-23437 and fix it if it is affected.\n\nWhat it is: CVE-2021-23437 is a high-severity denial of service vulnerability in Fedoraproject Fedora, published on 3 Sep 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-2021-23437 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- pillow (Bitnami): affected from 5.2.0; fixed in 8.3.2\n- pillow (PyPI): affected all versions; fixed in 8.3.2\n- pillow (PyPI): affected from 5.2.0; fixed in 8.3.2\n- pillow (PyPI): affected from 5.2.0; fixed in 8.3.2\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-2021-23437/ (Markdown: https://insights.sbomify.com/CVE-2021-23437/index.md)","id":"CVE-2021-23437","markdown":"https://insights.sbomify.com/CVE-2021-23437/index.md","name":"CVE-2021-23437","record":{"aliases":["ALPINE-CVE-2021-23437","BIT-pillow-2021-23437","DEBIAN-CVE-2021-23437","GHSA-98vv-pw6r-q6q4","MGASA-2021-0448","OESA-2021-1383","PYSEC-2021-317","ROOT-APP-PYPI-CVE-2021-23437","SNYK-PYTHON-PILLOW-1319443","SUSE-SU-2021:3234-1","SUSE-SU-2021:3235-1","UBUNTU-CVE-2021-23437"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Python image library","requires_auth":"none","summary":"Attackers can cause a denial of service in Pillow via a Regular Expression Denial of Service vulnerability in the getrgb function.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"snyk","cpe":[{"product":"fedora","vendor":"fedoraproject"},{"product":"pillow","vendor":"python"}],"cvss":{"score":7.5,"severity":"high","source":"cna","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":"The package pillow 5.2.0 and before 8.3.2 are vulnerable to Regular Expression Denial of Service (ReDoS) via the getrgb function.","ecosystems":["Bitnami","PyPI","SUSE:HPE Helion OpenStack 8","SUSE:OpenStack Cloud 8","SUSE:OpenStack Cloud 9","SUSE:OpenStack Cloud Crowbar 8","SUSE:OpenStack Cloud Crowbar 9"],"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":"Regular Expression Denial of Service (ReDoS)","id":"CVE-2021-23437","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"fedoraproject:fedora","products":["fedoraproject:fedora","python:pillow"],"type":"denial_of_service","year":"2021"},"n_packages":9,"n_references":7,"next":{"headline":"Prototype Pollution","id":"CVE-2021-23438"},"packages":[{"ecosystem":"Bitnami","fixed":["8.3.2"],"introduced":["5.2.0"],"last_affected":[],"package":"pillow","purl":"pkg:bitnami/pillow","source":"BIT-pillow-2021-23437"},{"ecosystem":"PyPI","fixed":["8.3.2"],"introduced":["0"],"last_affected":[],"package":"pillow","purl":"pkg:pypi/pillow","source":"PYSEC-2021-317"},{"ecosystem":"PyPI","fixed":["8.3.2"],"introduced":["5.2.0"],"last_affected":[],"package":"pillow","purl":null,"source":"GHSA-98vv-pw6r-q6q4"},{"ecosystem":"PyPI","fixed":["8.3.2"],"introduced":["5.2.0"],"last_affected":[],"package":"pillow","purl":"pkg:pypi/pillow","source":"GHSA-98vv-pw6r-q6q4"},{"ecosystem":"SUSE:HPE Helion OpenStack 8","fixed":["4.2.1-3.20.2"],"introduced":["0"],"last_affected":[],"package":"python-Pillow","purl":"pkg:rpm/suse/python-Pillow\u0026distro=HPE%20Helion%20OpenStack%208","source":"SUSE-SU-2021:3234-1"},{"ecosystem":"SUSE:OpenStack Cloud 8","fixed":["4.2.1-3.20.2"],"introduced":["0"],"last_affected":[],"package":"python-Pillow","purl":"pkg:rpm/suse/python-Pillow\u0026distro=SUSE%20OpenStack%20Cloud%208","source":"SUSE-SU-2021:3234-1"},{"ecosystem":"SUSE:OpenStack Cloud 9","fixed":["5.2.0-3.14.1"],"introduced":["0"],"last_affected":[],"package":"python-Pillow","purl":"pkg:rpm/suse/python-Pillow\u0026distro=SUSE%20OpenStack%20Cloud%209","source":"SUSE-SU-2021:3235-1"},{"ecosystem":"SUSE:OpenStack Cloud Crowbar 8","fixed":["4.2.1-3.20.2"],"introduced":["0"],"last_affected":[],"package":"python-Pillow","purl":"pkg:rpm/suse/python-Pillow\u0026distro=SUSE%20OpenStack%20Cloud%20Crowbar%208","source":"SUSE-SU-2021:3234-1"},{"ecosystem":"SUSE:OpenStack Cloud Crowbar 9","fixed":["5.2.0-3.14.1"],"introduced":["0"],"last_affected":[],"package":"python-Pillow","purl":"pkg:rpm/suse/python-Pillow\u0026distro=SUSE%20OpenStack%20Cloud%20Crowbar%209","source":"SUSE-SU-2021:3235-1"}],"prev":{"headline":"Prototype Pollution","id":"CVE-2021-23436"},"products":["Pillow"],"published":"2021-09-03","related":[{"cvss_score":9.8,"headline":"PHP-CGI OS Command Injection","id":"CVE-2024-4577","kev_date_added":"2024-06-12","published":"2024-06-09"},{"cvss_score":9.8,"headline":"Grafana Authentication Bypass","id":"CVE-2021-39226","kev_date_added":"2022-08-25","published":"2021-10-05"},{"cvss_score":9.8,"headline":"VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow","id":"CVE-2019-5544","kev_date_added":"2021-11-03","published":"2019-12-06"},{"cvss_score":9.6,"headline":"Google Chromium V8 Type Confusion","id":"CVE-2024-4947","kev_date_added":"2024-05-20","published":"2024-05-15"},{"cvss_score":9.6,"headline":"Google Chromium Visuals Use-After-Free","id":"CVE-2024-4671","kev_date_added":"2024-05-13","published":"2024-05-09"},{"cvss_score":9.6,"headline":"Google Chromium Mojo Insufficient Data Validation","id":"CVE-2022-3075","kev_date_added":"2022-09-08","published":"2022-09-26"},{"cvss_score":9.6,"headline":"Google Chromium Indexed DB API Use-After-Free","id":"CVE-2021-30633","kev_date_added":"2021-11-03","published":"2021-10-08"}],"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":"CC BY 4.0","name":"SUSE","prefix":"SUSE"},{"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":"2024-09-16","vendors":["n/a"]},"summary":"Attackers can cause a denial of service in Pillow via a Regular Expression Denial of Service vulnerability in the getrgb function.","url":"https://insights.sbomify.com/CVE-2021-23437/"}