CVE-2021-26937

{"id": "CVE-2021-26937", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 7.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "HIGH", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "published": "2021-02-09T20:15:14.910", "references": [{"url": "http://www.openwall.com/lists/oss-security/2021/02/09/8", "tags": ["Exploit", "Mailing List", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://ftp.gnu.org/gnu/screen/", "tags": ["Product"], "source": "cve@mitre.org"}, {"url": "https://lists.debian.org/debian-lts-announce/2021/02/msg00031.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GNWBOIDEPOEQS5RMQVMFKHKXJCGNYWBL/", "source": "cve@mitre.org"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JJWLXP45POUUYBJRRWPVAWNZDJTLYWVM/", "source": "cve@mitre.org"}, {"url": "https://lists.gnu.org/archive/html/screen-devel/2021-02/msg00000.html", "tags": ["Exploit", "Mailing List", "Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "https://security.gentoo.org/glsa/202105-11", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://www.debian.org/security/2021/dsa-4861", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://www.openwall.com/lists/oss-security/2021/02/09/3", "tags": ["Exploit", "Mailing List", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "http://www.openwall.com/lists/oss-security/2021/02/09/8", "tags": ["Exploit", "Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://ftp.gnu.org/gnu/screen/", "tags": ["Product"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.debian.org/debian-lts-announce/2021/02/msg00031.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GNWBOIDEPOEQS5RMQVMFKHKXJCGNYWBL/", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JJWLXP45POUUYBJRRWPVAWNZDJTLYWVM/", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.gnu.org/archive/html/screen-devel/2021-02/msg00000.html", "tags": ["Exploit", "Mailing List", "Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://security.gentoo.org/glsa/202105-11", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://security.netapp.com/advisory/ntap-20250509-0004/", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://www.debian.org/security/2021/dsa-4861", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://www.openwall.com/lists/oss-security/2021/02/09/3", "tags": ["Exploit", "Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-88"}]}], "descriptions": [{"lang": "en", "value": "encoding.c in GNU Screen through 4.8.0 allows remote attackers to cause a denial of service (invalid write access and application crash) or possibly have unspecified other impact via a crafted UTF-8 character sequence."}, {"lang": "es", "value": "El archivo encoding.c en GNU Screen versiones hasta 4.8.0, permite a atacantes remotos causar una denegaci\u00f3n de servicio (acceso de escritura no v\u00e1lido y bloqueo de la aplicaci\u00f3n) o posiblemente tener otro impacto no especificado por medio de una secuencia de caracteres UTF-8 dise\u00f1ada"}], "lastModified": "2025-05-09T20:15:36.293", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:gnu:screen:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F31304B8-5E0C-4BA0-89F6-E2D0CA54A0AC", "versionEndIncluding": "4.8.0"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252"}, {"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "36D96259-24BD-44E2-96D9-78CE1D41F956"}, {"criteria": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E460AA51-FCDA-46B9-AE97-E6676AA5E194"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}