cve-2025-20115
Vulnerability from cvelistv5
Published
2025-03-12 16:11
Modified
2025-03-21 20:35
Severity ?
EPSS score ?
Summary
Cisco IOS XR Software Border Gateway Protocol Denial of Service Vulnerability
References
Impacted products
| ▼ | Vendor | Product |
|---|---|---|
| Cisco | Cisco IOS XR Software |
{
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"metrics": [
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"content": {
"id": "CVE-2025-20115",
"options": [
{
"Exploitation": "none"
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{
"Automatable": "no"
},
{
"Technical Impact": "partial"
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"role": "CISA Coordinator",
"timestamp": "2025-03-21T20:35:39.499211Z",
"version": "2.0.3"
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"shortName": "CISA-ADP"
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"title": "CISA ADP Vulnrichment"
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"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco IOS XR Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "6.5.3"
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{
"status": "affected",
"version": "6.5.29"
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{
"status": "affected",
"version": "6.5.1"
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{
"status": "affected",
"version": "6.6.1"
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{
"status": "affected",
"version": "6.5.2"
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{
"status": "affected",
"version": "6.5.92"
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{
"status": "affected",
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{
"status": "affected",
"version": "6.6.2"
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
"version": "6.5.28"
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{
"status": "affected",
"version": "6.5.93"
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{
"status": "affected",
"version": "6.6.12"
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{
"status": "affected",
"version": "6.5.90"
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{
"status": "affected",
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"status": "affected",
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"status": "affected",
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{
"status": "affected",
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"status": "affected",
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{
"status": "affected",
"version": "7.1.2"
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{
"status": "affected",
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{
"status": "affected",
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"status": "affected",
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"status": "affected",
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"status": "affected",
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"status": "affected",
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"status": "affected",
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"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
"version": "7.2.2"
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{
"status": "affected",
"version": "6.7.4"
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{
"status": "affected",
"version": "6.5.31"
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{
"status": "affected",
"version": "7.3.15"
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{
"status": "affected",
"version": "7.3.16"
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{
"status": "affected",
"version": "6.8.1"
},
{
"status": "affected",
"version": "7.4.15"
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{
"status": "affected",
"version": "6.5.32"
},
{
"status": "affected",
"version": "7.3.2"
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{
"status": "affected",
"version": "7.5.1"
},
{
"status": "affected",
"version": "7.4.16"
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{
"status": "affected",
"version": "7.3.27"
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{
"status": "affected",
"version": "7.6.1"
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{
"status": "affected",
"version": "7.5.2"
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{
"status": "affected",
"version": "7.8.1"
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{
"status": "affected",
"version": "7.6.15"
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{
"status": "affected",
"version": "7.5.12"
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{
"status": "affected",
"version": "7.8.12"
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{
"status": "affected",
"version": "7.3.3"
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{
"status": "affected",
"version": "7.7.1"
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{
"status": "affected",
"version": "6.8.2"
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{
"status": "affected",
"version": "7.3.4"
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{
"status": "affected",
"version": "7.4.2"
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{
"status": "affected",
"version": "6.7.35"
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{
"status": "affected",
"version": "6.9.1"
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{
"status": "affected",
"version": "7.6.2"
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{
"status": "affected",
"version": "7.5.3"
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{
"status": "affected",
"version": "7.7.2"
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{
"status": "affected",
"version": "6.9.2"
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{
"status": "affected",
"version": "7.9.1"
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{
"status": "affected",
"version": "7.10.1"
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{
"status": "affected",
"version": "7.8.2"
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{
"status": "affected",
"version": "7.5.4"
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{
"status": "affected",
"version": "6.5.33"
},
{
"status": "affected",
"version": "7.8.22"
},
{
"status": "affected",
"version": "7.7.21"
},
{
"status": "affected",
"version": "7.9.2"
},
{
"status": "affected",
"version": "7.3.5"
},
{
"status": "affected",
"version": "7.5.5"
},
{
"status": "affected",
"version": "7.11.1"
},
{
"status": "affected",
"version": "7.9.21"
},
{
"status": "affected",
"version": "7.10.2"
},
{
"status": "affected",
"version": "24.1.1"
},
{
"status": "affected",
"version": "7.6.3"
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{
"status": "affected",
"version": "7.3.6"
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{
"status": "affected",
"version": "7.5.52"
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{
"status": "affected",
"version": "7.11.2"
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{
"status": "affected",
"version": "24.2.1"
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{
"status": "affected",
"version": "24.1.2"
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{
"status": "affected",
"version": "24.2.11"
},
{
"status": "affected",
"version": "24.2.2"
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{
"status": "affected",
"version": "7.8.23"
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{
"status": "affected",
"version": "7.11.21"
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{
"status": "affected",
"version": "24.2.20"
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{
"status": "affected",
"version": "6.5.35"
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],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in confederation implementation for the Border Gateway Protocol (BGP)\u0026nbsp;in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.\r\n\r\nThis vulnerability is due to a memory corruption that occurs when a BGP update is created with an AS_CONFED_SEQUENCE attribute that has 255 autonomous system numbers (AS numbers). An attacker could exploit this vulnerability by sending a crafted BGP update message, or the network could be designed in such a manner that the AS_CONFED_SEQUENCE attribute grows to 255 AS numbers or more. A successful exploit could allow the attacker to cause memory corruption, which may cause the BGP process to restart, resulting in a DoS condition. To exploit this vulnerability, an attacker must control a BGP confederation speaker within the same autonomous system as the victim, or the network must be designed in such a manner that the AS_CONFED_SEQUENCE attribute grows to 255 AS numbers or more."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is aware of a public announcement about this issue. This announcement is not specific to Cisco IOS XR Software and can be found at .\r\n\r\nThe Cisco PSIRT is not aware of any malicious use of the vulnerability that is described in this advisory."
}
],
"metrics": [
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"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.6,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-120",
"description": "Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-03-12T16:11:58.731Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-iosxr-bgp-dos-O7stePhX",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-bgp-dos-O7stePhX"
},
{
"name": "Crafting endless AS-PATHS in BGP",
"url": "https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/"
}
],
"source": {
"advisory": "cisco-sa-iosxr-bgp-dos-O7stePhX",
"defects": [
"CSCwk15887"
],
"discovery": "EXTERNAL"
},
"title": "Cisco IOS XR Software Border Gateway Protocol Denial of Service Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2025-20115",
"datePublished": "2025-03-12T16:11:58.731Z",
"dateReserved": "2024-10-10T19:15:13.210Z",
"dateUpdated": "2025-03-21T20:35:55.101Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2025-20115\",\"sourceIdentifier\":\"psirt@cisco.com\",\"published\":\"2025-03-12T16:15:21.090\",\"lastModified\":\"2025-03-12T16:15:21.090\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A vulnerability in confederation implementation for the Border Gateway Protocol (BGP)\u0026nbsp;in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.\\r\\n\\r\\nThis vulnerability is due to a memory corruption that occurs when a BGP update is created with an AS_CONFED_SEQUENCE attribute that has 255 autonomous system numbers (AS numbers). An attacker could exploit this vulnerability by sending a crafted BGP update message, or the network could be designed in such a manner that the AS_CONFED_SEQUENCE attribute grows to 255 AS numbers or more. A successful exploit could allow the attacker to cause memory corruption, which may cause the BGP process to restart, resulting in a DoS condition. To exploit this vulnerability, an attacker must control a BGP confederation speaker within the same autonomous system as the victim, or the network must be designed in such a manner that the AS_CONFED_SEQUENCE attribute grows to 255 AS numbers or more.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"psirt@cisco.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H\",\"baseScore\":8.6,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":4.0}]},\"weaknesses\":[{\"source\":\"psirt@cisco.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-120\"}]}],\"references\":[{\"url\":\"https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/\",\"source\":\"psirt@cisco.com\"},{\"url\":\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-bgp-dos-O7stePhX\",\"source\":\"psirt@cisco.com\"}]}}"
}
}
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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.