CVE-2025-20115 (GCVE-0-2025-20115)

Vulnerability from cvelistv5 – Published: 2025-03-12 16:11 – Updated: 2025-03-21 20:35
VLAI?
Title
Cisco IOS XR Software Border Gateway Protocol Denial of Service Vulnerability
Summary
A vulnerability in confederation implementation for the Border Gateway Protocol (BGP) in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. This 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.
Severity ?
8.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CWE
  • CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
Impacted products
Vendor Product Version
Cisco Cisco IOS XR Software Affected: 6.5.3
Affected: 6.5.29
Affected: 6.5.1
Affected: 6.6.1
Affected: 6.5.2
Affected: 6.5.92
Affected: 6.5.15
Affected: 6.6.2
Affected: 7.0.1
Affected: 6.6.25
Affected: 6.5.26
Affected: 6.6.11
Affected: 6.5.25
Affected: 6.5.28
Affected: 6.5.93
Affected: 6.6.12
Affected: 6.5.90
Affected: 7.0.0
Affected: 7.1.1
Affected: 7.0.90
Affected: 6.6.3
Affected: 6.7.1
Affected: 7.0.2
Affected: 7.1.15
Affected: 7.2.0
Affected: 7.2.1
Affected: 7.1.2
Affected: 6.7.2
Affected: 7.0.11
Affected: 7.0.12
Affected: 7.0.14
Affected: 7.1.25
Affected: 6.6.4
Affected: 7.2.12
Affected: 7.3.1
Affected: 7.1.3
Affected: 6.7.3
Affected: 7.4.1
Affected: 7.2.2
Affected: 6.7.4
Affected: 6.5.31
Affected: 7.3.15
Affected: 7.3.16
Affected: 6.8.1
Affected: 7.4.15
Affected: 6.5.32
Affected: 7.3.2
Affected: 7.5.1
Affected: 7.4.16
Affected: 7.3.27
Affected: 7.6.1
Affected: 7.5.2
Affected: 7.8.1
Affected: 7.6.15
Affected: 7.5.12
Affected: 7.8.12
Affected: 7.3.3
Affected: 7.7.1
Affected: 6.8.2
Affected: 7.3.4
Affected: 7.4.2
Affected: 6.7.35
Affected: 6.9.1
Affected: 7.6.2
Affected: 7.5.3
Affected: 7.7.2
Affected: 6.9.2
Affected: 7.9.1
Affected: 7.10.1
Affected: 7.8.2
Affected: 7.5.4
Affected: 6.5.33
Affected: 7.8.22
Affected: 7.7.21
Affected: 7.9.2
Affected: 7.3.5
Affected: 7.5.5
Affected: 7.11.1
Affected: 7.9.21
Affected: 7.10.2
Affected: 24.1.1
Affected: 7.6.3
Affected: 7.3.6
Affected: 7.5.52
Affected: 7.11.2
Affected: 24.2.1
Affected: 24.1.2
Affected: 24.2.11
Affected: 24.2.2
Affected: 7.8.23
Affected: 7.11.21
Affected: 24.2.20
Affected: 6.5.35
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\"affected\", \"version\": \"7.8.2\"}, {\"status\": \"affected\", \"version\": \"7.5.4\"}, {\"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\"}, {\"status\": \"affected\", \"version\": \"7.3.6\"}, {\"status\": \"affected\", \"version\": \"7.5.52\"}, {\"status\": \"affected\", \"version\": \"7.11.2\"}, {\"status\": \"affected\", \"version\": \"24.2.1\"}, {\"status\": \"affected\", \"version\": \"24.1.2\"}, {\"status\": \"affected\", \"version\": \"24.2.11\"}, {\"status\": \"affected\", \"version\": \"24.2.2\"}, {\"status\": \"affected\", \"version\": \"7.8.23\"}, {\"status\": \"affected\", \"version\": \"7.11.21\"}, {\"status\": \"affected\", \"version\": \"24.2.20\"}, {\"status\": \"affected\", \"version\": \"6.5.35\"}], \"defaultStatus\": \"unknown\"}], \"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.\"}], \"references\": [{\"url\": \"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-bgp-dos-O7stePhX\", \"name\": \"cisco-sa-iosxr-bgp-dos-O7stePhX\"}, {\"url\": \"https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/\", \"name\": \"Crafting endless AS-PATHS in BGP\"}], \"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.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"cwe\", \"cweId\": \"CWE-120\", \"description\": \"Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"shortName\": \"cisco\", \"dateUpdated\": \"2025-03-12T16:11:58.731Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-20115\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-03-21T20:35:55.101Z\", \"dateReserved\": \"2024-10-10T19:15:13.210Z\", \"assignerOrgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"datePublished\": \"2025-03-12T16:11:58.731Z\", \"assignerShortName\": \"cisco\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.