{ "id": "CVE-2021-26937", "sourceIdentifier": "cve@mitre.org", "published": "2021-02-09T20:15:14.910", "lastModified": "2022-05-06T20:59:27.240", "vulnStatus": "Analyzed", "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" } ], "metrics": { "cvssMetricV31": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL" }, "exploitabilityScore": 3.9, "impactScore": 5.9 } ], "cvssMetricV2": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "2.0", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "accessVector": "NETWORK", "accessComplexity": "LOW", "authentication": "NONE", "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "baseScore": 7.5 }, "baseSeverity": "HIGH", "exploitabilityScore": 10.0, "impactScore": 6.4, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false } ] }, "weaknesses": [ { "source": "nvd@nist.gov", "type": "Primary", "description": [ { "lang": "en", "value": "CWE-88" } ] } ], "configurations": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:gnu:screen:*:*:*:*:*:*:*:*", "versionEndIncluding": "4.8.0", "matchCriteriaId": "F31304B8-5E0C-4BA0-89F6-E2D0CA54A0AC" } ] } ] }, { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252" }, { "vulnerable": true, "criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73" } ] } ] }, { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*", "matchCriteriaId": "36D96259-24BD-44E2-96D9-78CE1D41F956" }, { "vulnerable": true, "criteria": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*", "matchCriteriaId": "E460AA51-FCDA-46B9-AE97-E6676AA5E194" } ] } ] } ], "references": [ { "url": "http://www.openwall.com/lists/oss-security/2021/02/09/8", "source": "cve@mitre.org", "tags": [ "Exploit", "Mailing List", "Third Party Advisory" ] }, { "url": "https://ftp.gnu.org/gnu/screen/", "source": "cve@mitre.org", "tags": [ "Product" ] }, { "url": "https://lists.debian.org/debian-lts-announce/2021/02/msg00031.html", "source": "cve@mitre.org", "tags": [ "Mailing List", "Third Party Advisory" ] }, { "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GNWBOIDEPOEQS5RMQVMFKHKXJCGNYWBL/", "source": "cve@mitre.org", "tags": [ "Mailing List", "Third Party Advisory" ] }, { "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JJWLXP45POUUYBJRRWPVAWNZDJTLYWVM/", "source": "cve@mitre.org", "tags": [ "Mailing List", "Third Party Advisory" ] }, { "url": "https://lists.gnu.org/archive/html/screen-devel/2021-02/msg00000.html", "source": "cve@mitre.org", "tags": [ "Exploit", "Mailing List", "Vendor Advisory" ] }, { "url": "https://security.gentoo.org/glsa/202105-11", "source": "cve@mitre.org", "tags": [ "Third Party Advisory" ] }, { "url": "https://www.debian.org/security/2021/dsa-4861", "source": "cve@mitre.org", "tags": [ "Third Party Advisory" ] }, { "url": "https://www.openwall.com/lists/oss-security/2021/02/09/3", "source": "cve@mitre.org", "tags": [ "Exploit", "Mailing List", "Third Party Advisory" ] } ] }