cve-2021-1389
Vulnerability from cvelistv5
Published
2021-02-04 16:40
Modified
2024-09-16 17:18
Severity
Summary
Cisco IOS XR and Cisco NX-OS Software IPv6 Access Control List Bypass Vulnerability
References
| Source | URL | Tags |
|---|---|---|
| ykramarz@cisco.com | https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipv6-acl-CHgdYk8j | Vendor Advisory |
Impacted products
| Vendor | Product |
|---|---|
| Cisco | Cisco IOS XR Software |
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T16:11:17.022Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"name": "20210203 Cisco IOS XR and Cisco NX-OS Software IPv6 Access Control List Bypass Vulnerability",
"tags": [
"vendor-advisory",
"x_refsource_CISCO",
"x_transferred"
],
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipv6-acl-CHgdYk8j"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "Cisco IOS XR Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"datePublic": "2021-02-03T00:00:00",
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the IPv6 traffic processing of Cisco IOS XR Software and Cisco NX-OS Software for certain Cisco devices could allow an unauthenticated, remote attacker to bypass an IPv6 access control list (ACL) that is configured for an interface of an affected device. The vulnerability is due to improper processing of IPv6 traffic that is sent through an affected device. An attacker could exploit this vulnerability by sending crafted IPv6 packets that traverse the affected device. A successful exploit could allow the attacker to access resources that would typically be protected by the interface ACL."
}
],
"exploits": [
{
"lang": "en",
"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."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.8,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-284",
"description": "CWE-284",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2021-02-04T16:40:16",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "20210203 Cisco IOS XR and Cisco NX-OS Software IPv6 Access Control List Bypass Vulnerability",
"tags": [
"vendor-advisory",
"x_refsource_CISCO"
],
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipv6-acl-CHgdYk8j"
}
],
"source": {
"advisory": "cisco-sa-ipv6-acl-CHgdYk8j",
"defect": [
[
"CSCvm55638",
"CSCvv45698"
]
],
"discovery": "INTERNAL"
},
"title": "Cisco IOS XR and Cisco NX-OS Software IPv6 Access Control List Bypass Vulnerability",
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "psirt@cisco.com",
"DATE_PUBLIC": "2021-02-03T16:00:00",
"ID": "CVE-2021-1389",
"STATE": "PUBLIC",
"TITLE": "Cisco IOS XR and Cisco NX-OS Software IPv6 Access Control List Bypass Vulnerability"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Cisco IOS XR 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 IPv6 traffic processing of Cisco IOS XR Software and Cisco NX-OS Software for certain Cisco devices could allow an unauthenticated, remote attacker to bypass an IPv6 access control list (ACL) that is configured for an interface of an affected device. The vulnerability is due to improper processing of IPv6 traffic that is sent through an affected device. An attacker could exploit this vulnerability by sending crafted IPv6 packets that traverse the affected device. A successful exploit could allow the attacker to access resources that would typically be protected by the interface ACL."
}
]
},
"exploit": [
{
"lang": "en",
"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": "5.8",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N",
"version": "3.0"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-284"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "20210203 Cisco IOS XR and Cisco NX-OS Software IPv6 Access Control List Bypass Vulnerability",
"refsource": "CISCO",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipv6-acl-CHgdYk8j"
}
]
},
"source": {
"advisory": "cisco-sa-ipv6-acl-CHgdYk8j",
"defect": [
[
"CSCvm55638",
"CSCvv45698"
]
],
"discovery": "INTERNAL"
}
}
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2021-1389",
"datePublished": "2021-02-04T16:40:16.699245Z",
"dateReserved": "2020-11-13T00:00:00",
"dateUpdated": "2024-09-16T17:18:53.593Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2021-1389\",\"sourceIdentifier\":\"ykramarz@cisco.com\",\"published\":\"2021-02-04T17:15:18.937\",\"lastModified\":\"2023-11-07T03:28:10.673\",\"vulnStatus\":\"Modified\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"A vulnerability in the IPv6 traffic processing of Cisco IOS XR Software and Cisco NX-OS Software for certain Cisco devices could allow an unauthenticated, remote attacker to bypass an IPv6 access control list (ACL) that is configured for an interface of an affected device. The vulnerability is due to improper processing of IPv6 traffic that is sent through an affected device. An attacker could exploit this vulnerability by sending crafted IPv6 packets that traverse the affected device. A successful exploit could allow the attacker to access resources that would typically be protected by the interface ACL.\"},{\"lang\":\"es\",\"value\":\"Una vulnerabilidad en el procesamiento del tr\u00e1fico IPv6 del Software Cisco IOS XR, y el Software Cisco NX-OS para determinados dispositivos Cisco, podr\u00eda permitir a un atacante remoto no autenticado omitir una lista de control de acceso (ACL) IPv6 configurada para una interfaz de un dispositivo afectado.\u0026#xa0;La vulnerabilidad es debido al procesamiento inapropiado del tr\u00e1fico IPv6 que se env\u00eda por medio de un dispositivo afectado.\u0026#xa0;Un atacante podr\u00eda explotar esta vulnerabilidad mediante el env\u00edo de paquetes IPv6 dise\u00f1ados que atraviesan el dispositivo afectado.\u0026#xa0;Una explotaci\u00f3n con \u00e9xito podr\u00eda permitir al atacante acceder a recursos que normalmente estar\u00edan protegidos por la interfaz ACL\"}],\"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:L/I:L/A:N\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":3.9,\"impactScore\":2.5},{\"source\":\"ykramarz@cisco.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\",\"baseScore\":5.8,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:P/I:P/A:N\",\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"NONE\",\"baseScore\":6.4},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"impactScore\":4.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-Other\"}]},{\"source\":\"ykramarz@cisco.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-284\"}]}],\"configurations\":[{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"6.6.3\",\"matchCriteriaId\":\"3B76CC85-2825-44F1-BE8A-3F01573BC199\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:cisco:ios_xr:7.1.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"24DF4040-86A9-46CA-8BAB-04D6016751D5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:cisco:ios_xr:7.2.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"84BABFE7-1350-4FB0-B9ED-5F08E386BC40\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:ncs_540:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"BC7AE6C1-B7C6-4056-9719-B5CFF71970AD\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:ncs_5501:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"0A972EFE-4F7E-4BFC-8631-66A2D16B74A3\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:ncs_5501-se:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"1B254955-C485-45D7-A19B-E78CE1D997AD\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:ncs_5502:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"7F72AEF0-EE70-40F8-B52B-1390820B87BB\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:ncs_5502-se:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"50C7B71A-2559-4E90-BAAA-C6FAAFE35FC3\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:ncs_5508:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"43D21B01-A754-474F-8E46-14D733AB307E\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:ncs_5516:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"17D6424C-972F-459C-B8F7-04FFD9F541BC\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:ncs_560:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"D4CC8256-E4F8-4DCB-B69A-40A7C5AA41E8\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:cisco:nx-os:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DA35D4AA-24B3-428E-84ED-804EF941E9A9\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:nexus_3600:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"97217080-455C-48E4-8CE1-6D5B9485864F\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:nexus_9500_r:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"EE07E8D4-376D-4341-A656-F8440368A8A9\"}]}]}],\"references\":[{\"url\":\"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipv6-acl-CHgdYk8j\",\"source\":\"ykramarz@cisco.com\",\"tags\":[\"Vendor Advisory\"]}]}}"
}
}
Loading...