gsd-2022-20676
Vulnerability from gsd
Modified
2023-12-13 01:19
Details
A vulnerability in the Tool Command Language (Tcl) interpreter of Cisco IOS XE Software could allow an authenticated, local attacker to escalate from privilege level 15 to root-level privileges. This vulnerability is due to insufficient input validation of data that is passed into the Tcl interpreter. An attacker could exploit this vulnerability by loading malicious Tcl code on an affected device. A successful exploit could allow the attacker to execute arbitrary commands as root. By default, Tcl shell access requires privilege level 15.
Aliases
Aliases
{ "GSD": { "alias": "CVE-2022-20676", "description": "A vulnerability in the Tool Command Language (Tcl) interpreter of Cisco IOS XE Software could allow an authenticated, local attacker to escalate from privilege level 15 to root-level privileges. This vulnerability is due to insufficient input validation of data that is passed into the Tcl interpreter. An attacker could exploit this vulnerability by loading malicious Tcl code on an affected device. A successful exploit could allow the attacker to execute arbitrary commands as root. By default, Tcl shell access requires privilege level 15.", "id": "GSD-2022-20676" }, "gsd": { "metadata": { "exploitCode": "unknown", "remediation": "unknown", "reportConfidence": "confirmed", "type": "vulnerability" }, "osvSchema": { "aliases": [ "CVE-2022-20676" ], "details": "A vulnerability in the Tool Command Language (Tcl) interpreter of Cisco IOS XE Software could allow an authenticated, local attacker to escalate from privilege level 15 to root-level privileges. This vulnerability is due to insufficient input validation of data that is passed into the Tcl interpreter. An attacker could exploit this vulnerability by loading malicious Tcl code on an affected device. A successful exploit could allow the attacker to execute arbitrary commands as root. By default, Tcl shell access requires privilege level 15.", "id": "GSD-2022-20676", "modified": "2023-12-13T01:19:16.746352Z", "schema_version": "1.4.0" } }, "namespaces": { "cve.org": { "CVE_data_meta": { "ASSIGNER": "psirt@cisco.com", "DATE_PUBLIC": "2022-04-13T16:00:00", "ID": "CVE-2022-20676", "STATE": "PUBLIC", "TITLE": "Cisco IOS XE Software Tool Command Language Privilege Escalation Vulnerability" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "Cisco IOS XE Software ", "version": { "version_data": [ { "version_value": "n/a" } ] } } ] }, "vendor_name": "Cisco" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "A vulnerability in the Tool Command Language (Tcl) interpreter of Cisco IOS XE Software could allow an authenticated, local attacker to escalate from privilege level 15 to root-level privileges. This vulnerability is due to insufficient input validation of data that is passed into the Tcl interpreter. An attacker could exploit this vulnerability by loading malicious Tcl code on an affected device. A successful exploit could allow the attacker to execute arbitrary commands as root. By default, Tcl shell access requires privilege level 15." } ] }, "exploit": [ { "lang": "eng", "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory. " } ], "impact": { "cvss": { "baseScore": "5.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N ", "version": "3.0" } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-250" } ] } ] }, "references": { "reference_data": [ { "name": "20220413 Cisco IOS XE Software Tool Command Language Privilege Escalation Vulnerability", "refsource": "CISCO", "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-priv-esc-grbtubU" } ] }, "source": { "advisory": "cisco-sa-iosxe-priv-esc-grbtubU", "defect": [ [ "CSCvy35833" ] ], "discovery": "INTERNAL" } }, "nvd.nist.gov": { "cve": { "configurations": [ { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:o:cisco:ios_xe:16.12.1z2:*:*:*:*:*:*:*", "matchCriteriaId": "46E37204-FC9A-4397-AFA4-9CAC7A116D55", "vulnerable": true }, { "criteria": "cpe:2.3:o:cisco:ios_xe:17.2.1:*:*:*:*:*:*:*", "matchCriteriaId": "4B7EE7C7-D6C1-4C35-8C80-EAF3FC7E7EFA", "vulnerable": true }, 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"criteria": "cpe:2.3:o:cisco:ios_xe:17.4.1c:*:*:*:*:*:*:*", "matchCriteriaId": "298C82F9-79A6-4DB7-8432-8B3A6DA39620", "vulnerable": true }, { "criteria": "cpe:2.3:o:cisco:ios_xe:17.4.2:*:*:*:*:*:*:*", "matchCriteriaId": "274E3E6F-4280-4EAE-B102-1BE57FE1F1D2", "vulnerable": true }, { "criteria": "cpe:2.3:o:cisco:ios_xe:17.4.2a:*:*:*:*:*:*:*", "matchCriteriaId": "46B52A51-51DB-4A12-AB1D-8D9605226599", "vulnerable": true }, { "criteria": "cpe:2.3:o:cisco:ios_xe:17.5.1:*:*:*:*:*:*:*", "matchCriteriaId": "938B0720-8CA7-43BA-9708-5CE9EC7A565A", "vulnerable": true }, { "criteria": "cpe:2.3:o:cisco:ios_xe:17.5.1a:*:*:*:*:*:*:*", "matchCriteriaId": "D4BE7166-DBD3-4CE6-A14A-725FE896B85E", "vulnerable": true }, { "criteria": "cpe:2.3:o:cisco:ios_xe:17.5.1c:*:*:*:*:*:*:*", "matchCriteriaId": "BDEDC7A0-D031-433B-ABF5-4EC0A43D80CC", "vulnerable": true } ], "negate": false, "operator": "OR" } ] } ], "descriptions": [ { "lang": "en", "value": "A vulnerability in the Tool Command Language (Tcl) interpreter of Cisco IOS XE Software could allow an authenticated, local attacker to escalate from privilege level 15 to root-level privileges. This vulnerability is due to insufficient input validation of data that is passed into the Tcl interpreter. An attacker could exploit this vulnerability by loading malicious Tcl code on an affected device. A successful exploit could allow the attacker to execute arbitrary commands as root. By default, Tcl shell access requires privilege level 15." }, { "lang": "es", "value": "Una vulnerabilidad en el int\u00e9rprete de Tool Command Language (Tcl) del software Cisco IOS XE podr\u00eda permitir a un atacante local autenticado escalar desde el nivel de privilegio 15 a privilegios de nivel root. Esta vulnerabilidad es debido a que no ha sido suficientemente la entrada de datos que son pasados al int\u00e9rprete Tcl. Un atacante podr\u00eda explotar esta vulnerabilidad cargando c\u00f3digo Tcl malicioso en un dispositivo afectado. Una explotaci\u00f3n con \u00e9xito podr\u00eda permitir al atacante ejecutar comandos arbitrarios como root. Por defecto, el acceso al shell Tcl requiere un nivel de privilegio 15" } ], "id": "CVE-2022-20676", "lastModified": "2024-03-06T15:24:05.660", "metrics": { "cvssMetricV2": [ { "acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": { "accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 7.2, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C", "version": "2.0" }, "exploitabilityScore": 3.9, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false } ], "cvssMetricV31": [ { "cvssData": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" }, "exploitabilityScore": 0.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary" }, { "cvssData": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 5.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N", "version": "3.1" }, "exploitabilityScore": 0.8, "impactScore": 4.2, "source": "ykramarz@cisco.com", "type": "Secondary" } ] }, "published": "2022-04-15T15:15:12.353", "references": [ { "source": "ykramarz@cisco.com", "tags": [ "Vendor Advisory" ], "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-priv-esc-grbtubU" } ], "sourceIdentifier": "ykramarz@cisco.com", "vulnStatus": "Analyzed", "weaknesses": [ { "description": [ { "lang": "en", "value": "CWE-20" } ], "source": "nvd@nist.gov", "type": "Primary" }, { "description": [ { "lang": "en", "value": "CWE-250" } ], "source": "ykramarz@cisco.com", "type": "Secondary" } ] } } } }
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