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HIGH · 8.6

CVE-2020-26070

A vulnerability in the ingress packet processing function of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to cause a den...

Vulnerability Description

A vulnerability in the ingress packet processing function of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper resource allocation when an affected device processes network traffic in software switching mode (punted). An attacker could exploit this vulnerability by sending specific streams of Layer 2 or Layer 3 protocol data units (PDUs) to an affected device. A successful exploit could cause the affected device to run out of buffer resources, which could make the device unable to process or forward traffic, resulting in a DoS condition. The device would need to be restarted to regain functionality.

CVSS Score

8.6

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
CiscoIos Xr< 6.7.2
CiscoAsr 9000Vv2
CiscoAsr 9001-
CiscoAsr 9006-
CiscoAsr 9010-
CiscoAsr 9901-
CiscoAsr 9903-
CiscoAsr 9904-
CiscoAsr 9906-
CiscoAsr 9910-
CiscoAsr 9912-
CiscoAsr 9922-

Related Weaknesses (CWE)

CWE-404

References

FAQ

What is CVE-2020-26070?

CVE-2020-26070 is a vulnerability with a CVSS score of 8.6 (HIGH). A vulnerability in the ingress packet processing function of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to cause a den...

How severe is CVE-2020-26070?

CVE-2020-26070 has been rated HIGH with a CVSS base score of 8.6/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-26070?

Check the references section above for vendor advisories and patch information. Affected products include: Cisco Ios Xr, Cisco Asr 9000V, Cisco Asr 9001, Cisco Asr 9006, Cisco Asr 9010.