CVE-2021-28676

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:*", "matchCriteriaId": "67AB0921-A1F5-4B3B-BED5-FC8B1DAF30C6", "versionEndExcluding": "8.2.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*", "matchCriteriaId": "E460AA51-FCDA-46B9-AE97-E6676AA5E194", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An issue was discovered in Pillow before 8.2.0. For FLI data, FliDecode did not properly check that the block advance was non-zero, potentially leading to an infinite loop on load."}, {"lang": "es", "value": "Se detect\u00f3 un problema en Pillow versiones anteriores a 8.2.0,. En el caso de los datos FLI, la funci\u00f3n FliDecode no comprobaba correctamente que el avance del bloque fuera distinto de cero, lo que pod\u00eda conllevar un bucle infinito en la carga"}], "id": "CVE-2021-28676", "lastModified": "2026-06-17T03:46:46.600", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-06-02T16:15:08.797", "references": [{"source": "cve@mitre.org", "tags": ["Patch"], "url": "https://github.com/python-pillow/Pillow/commit/bb6c11fb889e6c11b0ee122b828132ee763b5856"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://github.com/python-pillow/Pillow/pull/5377"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2021/07/msg00018.html"}, {"source": "cve@mitre.org", "tags": ["Mailing List"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL/"}, {"source": "cve@mitre.org", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#cve-2021-28676-fix-fli-dos"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202107-33"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://github.com/python-pillow/Pillow/commit/bb6c11fb889e6c11b0ee122b828132ee763b5856"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/python-pillow/Pillow/pull/5377"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2021/07/msg00018.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#cve-2021-28676-fix-fli-dos"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202107-33"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-835"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2021:4149", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "python-pillow-0:5.1.1-16.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-11-09T00:00:00Z"}], "bugzilla": {"description": "python-pillow: Infinite loop in FLI image reader", "id": "1958252", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1958252"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-20->CWE-835", "details": ["An issue was discovered in Pillow before 8.2.0. For FLI data, FliDecode did not properly check that the block advance was non-zero, potentially leading to an infinite loop on load.", "A flaw was found in python-pillow. FliDecode.c did not properly check that the block advance was non-zero, potentially leading to an infinite loop on load. This issue dates to the PIL fork. The highest threat from this vulnerability is to system availability."], "mitigation": {"lang": "en:us", "value": "To mitigate this feature on Red Hat Quay, keep the invoice generation feature disabled, as it is by default."}, "name": "CVE-2021-28676", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "python-pillow", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/a:redhat:quay:3", "fix_state": "Affected", "package_name": "quay/quay-rhel8", "product_name": "Red Hat Quay 3"}], "public_date": "2021-04-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-28676\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-28676\nhttps://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#security"], "threat_severity": "Moderate"}

{}