CVE-2023-20049

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-bfd-XmRescbT	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

OR	cpe:2.3:o:cisco:ios_xr::::::::
	cpe:2.3:o:cisco:ios_xr::::::::
	cpe:2.3:o:cisco:ios_xr:7.7:::::::*

OR	cpe:2.3:h:cisco:asr_9000v-v2:-:::::::*
	cpe:2.3:h:cisco:asr_9001:-:::::::*
	cpe:2.3:h:cisco:asr_9006:-:::::::*
	cpe:2.3:h:cisco:asr_9010:-:::::::*
	cpe:2.3:h:cisco:asr_9901:-:::::::*
	cpe:2.3:h:cisco:asr_9902:-:::::::*
	cpe:2.3:h:cisco:asr_9903:-:::::::*
	cpe:2.3:h:cisco:asr_9904:-:::::::*
	cpe:2.3:h:cisco:asr_9906:-:::::::*
	cpe:2.3:h:cisco:asr_9910:-:::::::*
	cpe:2.3:h:cisco:asr_9912:-:::::::*
	cpe:2.3:h:cisco:asr_9922:-:::::::*

History

No history.

Information

Published : 2023-03-09 22:15

Updated : 2024-02-28 19:51

NVD link : CVE-2023-20049

Mitre link : CVE-2023-20049

CVE.ORG link : CVE-2023-20049

JSON object : View

Products Affected

cisco

asr_9000v-v2
asr_9922
asr_9902
ios_xr
asr_9906
asr_9006
asr_9904
asr_9910
asr_9901
asr_9912
asr_9010
asr_9001
asr_9903

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-805

Buffer Access with Incorrect Length Value

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