Denial of service in Cisco IOS XR Software for ASR 9000 Series Routers



Published: 2022-04-15
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-20714
CWE-ID CWE-125
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Cisco IOS XR
Operating systems & Components / Operating system

Cisco ASR 9000 Series Aggregation Services Routers
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor Cisco Systems, Inc

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Out-of-bounds read

EUVDB-ID: #VU62348

Risk: High

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-20714

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in the data plane microcode of Lightspeed-Plus line cards. A remote attacker can send a specially crafted packet, trigger out-of-bounds read error and cause a denial of service condition on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco IOS XR: 7.1 - 7.3

Cisco ASR 9000 Series Aggregation Services Routers: All versions

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-lsplus-Z6AQEOjk


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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