CVE-2023-20049

CVSS V2 None CVSS V3 None
Description
A vulnerability in the bidirectional forwarding detection (BFD) hardware offload feature of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers, ASR 9902 Compact High-Performance Routers, and ASR 9903 Compact High-Performance Routers could allow an unauthenticated, remote attacker to cause a line card to reset, resulting in a denial of service (DoS) condition. This vulnerability is due to the incorrect handling of malformed BFD packets that are received on line cards where the BFD hardware offload feature is enabled. An attacker could exploit this vulnerability by sending a crafted IPv4 BFD packet to an affected device. A successful exploit could allow the attacker to cause line card exceptions or a hard reset, resulting in loss of traffic over that line card while the line card reloads.
Overview
  • CVE ID
  • CVE-2023-20049
  • Assigner
  • ykramarz@cisco.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2023-03-09T22:15:52
  • Last Modified Date
  • 2023-03-16T15:23:43
Weakness Enumerations
CWE URL
CWE-119 http://cwe.mitre.org/data/definitions/119.html
CWE-805 http://cwe.mitre.org/data/definitions/805.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:* 1 OR 7.5.3
cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:* 1 OR 7.6 7.6.2
cpe:2.3:o:cisco:ios_xr:7.7:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:cisco:asr_9000v-v2:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_9001:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_9006:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_9901:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_9902:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_9903:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_9906:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_9910:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:*:* 0 OR
References
Reference URL Reference Tags
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-bfd-XmRescbT Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2023-20049
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-20049
History
Created Old Value New Value Data Type Notes
2023-04-17 06:11:28 Added to TrackCVE
2023-04-17 06:11:30 Weakness Enumeration new
2023-04-17 06:43:15 CVSS V3 information new