gsd-2023-20191
Vulnerability from gsd
Modified
2023-12-13 01:20
Details
A vulnerability in the access control list (ACL) processing on MPLS interfaces in the ingress direction of Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass a configured ACL.
This vulnerability is due to incomplete support for this feature. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device.
There are workarounds that address this vulnerability.
This advisory is part of the September 2023 release of the Cisco IOS XR Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: September 2023 Semiannual Cisco IOS XR Software Security Advisory Bundled Publication .
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2023-20191",
"id": "GSD-2023-20191"
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2023-20191"
],
"details": "A vulnerability in the access control list (ACL) processing on MPLS interfaces in the ingress direction of Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass a configured ACL.\r\n\r This vulnerability is due to incomplete support for this feature. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device.\r\n\r There are workarounds that address this vulnerability.\r\n\r \r\n\r \r This advisory is part of the September 2023 release of the Cisco IOS XR Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: September 2023 Semiannual Cisco IOS XR Software Security Advisory Bundled Publication .",
"id": "GSD-2023-20191",
"modified": "2023-12-13T01:20:27.820353Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
"cve.org": {
"CVE_data_meta": {
"ASSIGNER": "psirt@cisco.com",
"ID": "CVE-2023-20191",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Cisco IOS XR Software",
"version": {
"version_data": [
{
"version_affected": "=",
"version_value": "6.4.1"
},
{
"version_affected": "=",
"version_value": "6.5.1"
},
{
"version_affected": "=",
"version_value": "6.5.2"
},
{
"version_affected": "=",
"version_value": "6.5.3"
},
{
"version_affected": "=",
"version_value": "6.6.2"
},
{
"version_affected": "=",
"version_value": "6.6.3"
},
{
"version_affected": "=",
"version_value": "6.6.25"
},
{
"version_affected": "=",
"version_value": "6.6.4"
},
{
"version_affected": "=",
"version_value": "7.0.1"
},
{
"version_affected": "=",
"version_value": "7.0.2"
},
{
"version_affected": "=",
"version_value": "7.1.1"
},
{
"version_affected": "=",
"version_value": "7.1.2"
},
{
"version_affected": "=",
"version_value": "7.2.1"
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{
"version_affected": "=",
"version_value": "7.2.2"
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{
"version_affected": "=",
"version_value": "7.3.1"
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{
"version_affected": "=",
"version_value": "7.3.2"
},
{
"version_affected": "=",
"version_value": "7.3.3"
},
{
"version_affected": "=",
"version_value": "7.3.5"
},
{
"version_affected": "=",
"version_value": "7.4.1"
},
{
"version_affected": "=",
"version_value": "7.4.2"
},
{
"version_affected": "=",
"version_value": "7.5.1"
},
{
"version_affected": "=",
"version_value": "7.5.3"
},
{
"version_affected": "=",
"version_value": "7.5.2"
},
{
"version_affected": "=",
"version_value": "7.5.4"
},
{
"version_affected": "=",
"version_value": "7.6.1"
},
{
"version_affected": "=",
"version_value": "7.6.2"
},
{
"version_affected": "=",
"version_value": "7.7.1"
},
{
"version_affected": "=",
"version_value": "7.7.2"
},
{
"version_affected": "=",
"version_value": "7.8.1"
},
{
"version_affected": "=",
"version_value": "7.8.2"
},
{
"version_affected": "=",
"version_value": "7.9.1"
}
]
}
}
]
},
"vendor_name": "Cisco"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "A vulnerability in the access control list (ACL) processing on MPLS interfaces in the ingress direction of Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass a configured ACL.\r\n\r This vulnerability is due to incomplete support for this feature. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device.\r\n\r There are workarounds that address this vulnerability.\r\n\r \r\n\r \r This advisory is part of the September 2023 release of the Cisco IOS XR Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: September 2023 Semiannual Cisco IOS XR Software Security Advisory Bundled Publication ."
}
]
},
"exploit": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
}
],
"impact": {
"cvss": [
{
"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"
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"cweId": "CWE-284",
"lang": "eng",
"value": "Improper Access Control"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dnx-acl-PyzDkeYF",
"refsource": "MISC",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dnx-acl-PyzDkeYF"
}
]
},
"source": {
"advisory": "cisco-sa-dnx-acl-PyzDkeYF",
"defects": [
"CSCwe63504"
],
"discovery": "INTERNAL"
}
},
"nvd.nist.gov": {
"cve": {
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*",
"matchCriteriaId": "0F752BFA-5ADB-4331-8997-B51611C07F57",
"versionEndExcluding": "7.7.21",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*",
"matchCriteriaId": "CCE5AC34-B919-44FC-928C-13CD466C9EDA",
"versionEndExcluding": "7.9.2",
"versionStartIncluding": "7.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xr:7.10:*:*:*:*:*:*:*",
"matchCriteriaId": "15136625-5385-4B82-AC99-B71D3608BBF3",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the access control list (ACL) processing on MPLS interfaces in the ingress direction of Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass a configured ACL.\r\n\r This vulnerability is due to incomplete support for this feature. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device.\r\n\r There are workarounds that address this vulnerability.\r\n\r \r\n\r \r This advisory is part of the September 2023 release of the Cisco IOS XR Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: September 2023 Semiannual Cisco IOS XR Software Security Advisory Bundled Publication ."
},
{
"lang": "es",
"value": "Una vulnerabilidad en el procesamiento de la lista de control de acceso (ACL) en las interfaces MPLS en la direcci\u00f3n de ingreso del software Cisco IOS XR podr\u00eda permitir que un atacante remoto no autenticado omita una ACL configurada. Esta vulnerabilidad se debe a la compatibilidad incompleta con esta caracter\u00edstica. Un atacante podr\u00eda aprovechar esta vulnerabilidad intentando enviar tr\u00e1fico a trav\u00e9s de un dispositivo afectado. Una explotaci\u00f3n existosa podr\u00eda permitir al atacante eludir una ACL en el dispositivo afectado. Existen workarounds que abordan esta vulnerabilidad. Este aviso es parte de la publicaci\u00f3n de septiembre de 2023 del paquete de avisos de seguridad del software Cisco IOS XR."
}
],
"id": "CVE-2023-20191",
"lastModified": "2024-01-25T17:15:34.100",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
},
{
"cvssData": {
"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"
},
"exploitabilityScore": 3.9,
"impactScore": 1.4,
"source": "ykramarz@cisco.com",
"type": "Secondary"
}
]
},
"published": "2023-09-13T17:15:09.440",
"references": [
{
"source": "ykramarz@cisco.com",
"tags": [
"Vendor Advisory"
],
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dnx-acl-PyzDkeYF"
}
],
"sourceIdentifier": "ykramarz@cisco.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-863"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-284"
}
],
"source": "ykramarz@cisco.com",
"type": "Secondary"
}
]
}
}
}
}
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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.