Privilege escalation in Cisco IOS XE SD-WAN Software
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-1371 |
| CWE-ID | CWE-269 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software |
Cisco ASR 1000 Series Aggregation Services Routers Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Cloud Services Router 1000V Series Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco 4000 Series Integrated Services Routers Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco 1000 Series Integrated Services Routers Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco IOS XE Operating systems & Components / Operating system |
| Vendor | Cisco Systems, Inc |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Improper Privilege Management
EUVDB-ID: #VU51734
Risk: Low
CVSSv3.1: 5.8 [CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-1371
CWE-ID:
CWE-269 - Improper Privilege Management
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges.
The vulnerability exists due to improper privilege management within the role-based access control of Cisco IOS XE SD-WAN Software. A local user with read-only privileges can obtain administrative privileges by using the console port when the device is in the default SD-WAN configuration.
Successful exploitation of the vulnerability may allow a user with read-only permissions to access administrative privileges.
MitigationInstall updates from vendor's website.
Vulnerable software versionsCisco ASR 1000 Series Aggregation Services Routers: All versions
Cisco Cloud Services Router 1000V Series: All versions
Cisco 4000 Series Integrated Services Routers: All versions
Cisco 1000 Series Integrated Services Routers: All versions
Cisco IOS XE: 17.2.1r - 17.2.1v
CPE2.3- cpe:2.3:h:cisco_systems:cisco_asr_1000_series_aggregation_services_routers:*:*:*:*:*:*:*:
- cpe:2.3:h:cisco_systems:cisco_cloud_services_router_1000v_series:*:*:*:*:*:*:*:
- cpe:2.3:h:cisco_systems:cisco_4000_series_integrated_services_routers:*:*:*:*:*:*:*:
- cpe:2.3:h:cisco_systems:cisco_1000_series_integrated_services_routers:*:*:*:*:*:*:*:
- cpe:2.3:o:cisco_systems:cisco_ios_xe:17.2.1r:*:*:*:*:*:*:
- cpe:2.3:o:cisco_systems:cisco_ios_xe:17.2.1v:*:*:*:*:*:*:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-esc-rSNVvTf9
http://bst.cloudapps.cisco.com/bugsearch/bug/CSCvv43400
Q & A
Can this vulnerability be exploited remotely?
No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
