CVE-2021-34722: Cisco IOS XR Software Command Injection Vulnerabilities
First published: Thu Sep 09 2021(Updated: )
Multiple vulnerabilities in the CLI of Cisco IOS XR Software could allow an authenticated, local attacker to gain access to the underlying root shell of an affected device and execute arbitrary commands with root privileges. For more information about these vulnerabilities, see the Details section of this advisory.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco IOS XR | >=7.1.1<7.3.2 | |
| Cisco IOS XR | >=7.4.0<7.4.1 | |
| Cisco Asr 9000v-v2 | ||
| Cisco Asr 9001 | ||
| Cisco Asr 9006 | ||
| Cisco Asr 9010 | ||
| Cisco Asr 9901 | ||
| Cisco Asr 9902 | ||
| Cisco Asr 9903 | ||
| Cisco Asr 9904 | ||
| Cisco Asr 9906 | ||
| Cisco Asr 9910 | ||
| Cisco Asr 9912 | ||
| Cisco Asr 9922 | ||
| Cisco Ios Xrv | ||
| Cisco Ios Xrv 9000 | ||
| Cisco Ncs 520 | ||
| Cisco Ncs 540 | ||
| Cisco Ncs 540 Fronthaul | ||
| Cisco Ncs 560-4 | ||
| Cisco Ncs 560-7 | ||
| Cisco Ncs 5001 | ||
| Cisco Ncs 5002 | ||
| Cisco Ncs 5011 | ||
| Cisco Ncs 5501 | ||
| Cisco Ncs 5501-se | ||
| Cisco Ncs 5502 | ||
| Cisco Ncs 5502-se | ||
| Cisco Ncs 5508 | ||
| Cisco Ncs 5516 | ||
| Cisco Ncs 6000 | ||
| Cisco Ncs 6008 | ||
| Cisco Ncs 1001 | ||
| Cisco Ncs 1002 | ||
| Cisco Ncs 1004 | ||
| Cisco 8101-32fh | ||
| Cisco 8101-32h | ||
| Cisco 8102-64h | ||
| Cisco 8201 | ||
| Cisco 8201-32fh | ||
| Cisco 8202 | ||
| Cisco 8804 | ||
| Cisco 8808 | ||
| Cisco 8812 | ||
| Cisco 8818 |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2021-34722.
What is the severity of CVE-2021-34722?
The severity of CVE-2021-34722 is high (6.7).
What is the affected software?
The affected software is Cisco IOS XR Software versions 7.1.1 to 7.3.2 and 7.4.0 to 7.4.1.
How can an attacker exploit CVE-2021-34722?
An attacker can exploit CVE-2021-34722 by gaining access to the CLI of an affected device and executing arbitrary commands with root privileges.
Where can I find more information about CVE-2021-34722?
You can find more information about CVE-2021-34722 in the Cisco Security Advisory at https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-cmd-inj-wbZKvPxc.
- collector/nvd-index
- agent/softwarecombine
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/references
- agent/title
- agent/weakness
- agent/author
- agent/severity
- agent/last-modified-date
- agent/tags
- agent/first-publish-date
- agent/event
- agent/description
- vendor/cisco
- canonical/cisco ios xr
- version/cisco ios xr/7.1.1
- version/cisco ios xr/7.4.0
- canonical/cisco asr 9000v-v2
- canonical/cisco asr 9001
- canonical/cisco asr 9006
- canonical/cisco asr 9010
- canonical/cisco asr 9901
- canonical/cisco asr 9902
- canonical/cisco asr 9903
- canonical/cisco asr 9904
- canonical/cisco asr 9906
- canonical/cisco asr 9910
- canonical/cisco asr 9912
- canonical/cisco asr 9922
- canonical/cisco ios xrv
- canonical/cisco ios xrv 9000
- canonical/cisco ncs 520
- canonical/cisco ncs 540
- canonical/cisco ncs 540 fronthaul
- canonical/cisco ncs 560-4
- canonical/cisco ncs 560-7
- canonical/cisco ncs 5001
- canonical/cisco ncs 5002
- canonical/cisco ncs 5011
- canonical/cisco ncs 5501
- canonical/cisco ncs 5501-se
- canonical/cisco ncs 5502
- canonical/cisco ncs 5502-se
- canonical/cisco ncs 5508
- canonical/cisco ncs 5516
- canonical/cisco ncs 6000
- canonical/cisco ncs 6008
- canonical/cisco ncs 1001
- canonical/cisco ncs 1002
- canonical/cisco ncs 1004
- canonical/cisco 8101-32fh
- canonical/cisco 8101-32h
- canonical/cisco 8102-64h
- canonical/cisco 8201
- canonical/cisco 8201-32fh
- canonical/cisco 8202
- canonical/cisco 8804
- canonical/cisco 8808
- canonical/cisco 8812
- canonical/cisco 8818