gsd-2024-20327
Vulnerability from gsd
Modified
2023-12-13 01:21
Details
A vulnerability in the PPP over Ethernet (PPPoE) termination feature of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, adjacent attacker to crash the ppp_ma process, resulting in a denial of service (DoS) condition.
This vulnerability is due to the improper handling of malformed PPPoE packets that are received on a router that is running Broadband Network Gateway (BNG) functionality with PPPoE termination on a Lightspeed-based or Lightspeed-Plus-based line card. An attacker could exploit this vulnerability by sending a crafted PPPoE packet to an affected line card interface that does not terminate PPPoE. A successful exploit could allow the attacker to crash the ppp_ma process, resulting in a DoS condition for PPPoE traffic across the router.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2024-20327",
"id": "GSD-2024-20327"
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2024-20327"
],
"details": "A vulnerability in the PPP over Ethernet (PPPoE) termination feature of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, adjacent attacker to crash the ppp_ma process, resulting in a denial of service (DoS) condition.\r\n\r This vulnerability is due to the improper handling of malformed PPPoE packets that are received on a router that is running Broadband Network Gateway (BNG) functionality with PPPoE termination on a Lightspeed-based or Lightspeed-Plus-based line card. An attacker could exploit this vulnerability by sending a crafted PPPoE packet to an affected line card interface that does not terminate PPPoE. A successful exploit could allow the attacker to crash the ppp_ma process, resulting in a DoS condition for PPPoE traffic across the router.",
"id": "GSD-2024-20327",
"modified": "2023-12-13T01:21:43.008987Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
"cve.org": {
"CVE_data_meta": {
"ASSIGNER": "psirt@cisco.com",
"ID": "CVE-2024-20327",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Cisco IOS XR Software",
"version": {
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{
"version_affected": "=",
"version_value": "5.2.0"
},
{
"version_affected": "=",
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},
{
"version_affected": "=",
"version_value": "5.2.4"
},
{
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"version_value": "5.3.0"
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{
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"version_value": "5.3.1"
},
{
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"version_value": "5.3.2"
},
{
"version_affected": "=",
"version_value": "5.3.3"
},
{
"version_affected": "=",
"version_value": "5.3.4"
},
{
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"version_value": "6.0.0"
},
{
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},
{
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"version_value": "6.0.2"
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{
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"version_value": "6.1.1"
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{
"version_affected": "=",
"version_value": "6.1.2"
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{
"version_affected": "=",
"version_value": "6.1.3"
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{
"version_affected": "=",
"version_value": "6.1.4"
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{
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"version_value": "6.2.1"
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{
"version_affected": "=",
"version_value": "6.2.2"
},
{
"version_affected": "=",
"version_value": "6.2.3"
},
{
"version_affected": "=",
"version_value": "6.2.25"
},
{
"version_affected": "=",
"version_value": "6.3.2"
},
{
"version_affected": "=",
"version_value": "6.3.3"
},
{
"version_affected": "=",
"version_value": "6.4.1"
},
{
"version_affected": "=",
"version_value": "6.4.2"
},
{
"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"
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{
"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": "7.1.15"
},
{
"version_affected": "=",
"version_value": "7.1.2"
},
{
"version_affected": "=",
"version_value": "7.1.3"
},
{
"version_affected": "=",
"version_value": "6.7.1"
},
{
"version_affected": "=",
"version_value": "6.7.2"
},
{
"version_affected": "=",
"version_value": "6.7.3"
},
{
"version_affected": "=",
"version_value": "7.3.1"
},
{
"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": "6.8.1"
},
{
"version_affected": "=",
"version_value": "6.8.2"
},
{
"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": "7.5.5"
},
{
"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": "6.9.1"
},
{
"version_affected": "=",
"version_value": "6.9.2"
},
{
"version_affected": "=",
"version_value": "7.8.1"
},
{
"version_affected": "=",
"version_value": "7.8.2"
},
{
"version_affected": "=",
"version_value": "7.9.1"
},
{
"version_affected": "=",
"version_value": "7.9.2"
}
]
}
}
]
},
"vendor_name": "Cisco"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "A vulnerability in the PPP over Ethernet (PPPoE) termination feature of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, adjacent attacker to crash the ppp_ma process, resulting in a denial of service (DoS) condition.\r\n\r This vulnerability is due to the improper handling of malformed PPPoE packets that are received on a router that is running Broadband Network Gateway (BNG) functionality with PPPoE termination on a Lightspeed-based or Lightspeed-Plus-based line card. An attacker could exploit this vulnerability by sending a crafted PPPoE packet to an affected line card interface that does not terminate PPPoE. A successful exploit could allow the attacker to crash the ppp_ma process, resulting in a DoS condition for PPPoE traffic across the router."
}
]
},
"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": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.4,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
"version": "3.1"
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"cweId": "CWE-20",
"lang": "eng",
"value": "Improper Input Validation"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-pppma-JKWFgneW",
"refsource": "MISC",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-pppma-JKWFgneW"
}
]
},
"source": {
"advisory": "cisco-sa-iosxr-pppma-JKWFgneW",
"defects": [
"CSCwf75789"
],
"discovery": "INTERNAL"
}
},
"nvd.nist.gov": {
"cve": {
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the PPP over Ethernet (PPPoE) termination feature of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, adjacent attacker to crash the ppp_ma process, resulting in a denial of service (DoS) condition.\r\n\r This vulnerability is due to the improper handling of malformed PPPoE packets that are received on a router that is running Broadband Network Gateway (BNG) functionality with PPPoE termination on a Lightspeed-based or Lightspeed-Plus-based line card. An attacker could exploit this vulnerability by sending a crafted PPPoE packet to an affected line card interface that does not terminate PPPoE. A successful exploit could allow the attacker to crash the ppp_ma process, resulting in a DoS condition for PPPoE traffic across the router."
}
],
"id": "CVE-2024-20327",
"lastModified": "2024-03-13T18:15:58.530",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.4,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 4.0,
"source": "ykramarz@cisco.com",
"type": "Secondary"
}
]
},
"published": "2024-03-13T17:15:48.593",
"references": [
{
"source": "ykramarz@cisco.com",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-pppma-JKWFgneW"
}
],
"sourceIdentifier": "ykramarz@cisco.com",
"vulnStatus": "Awaiting Analysis",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-20"
}
],
"source": "ykramarz@cisco.com",
"type": "Secondary"
}
]
}
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- 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.