QID 317131

Date Published: 2022-02-14

QID 317131: Cisco Internetwork Operating System (IOS) XE SD-WAN Software Arbitrary File Overwrite Vulnerability (cisco-sa-iosxesdwan-arbfileov-MVOF3ZZn)

A vulnerability in a specific CLI command that is run on Cisco IOS XE SD-WAN Software could allow an authenticated,
local attacker to overwrite arbitrary files in the configuration database of an affected device.

Affected Products:
Following Cisco products if they are running a vulnerable release of Cisco IOS XE SD-WAN Software and have the SD-WAN feature enabled:
1000 Series Integrated Services Routers (ISRs)
4000 Series ISRs
ASR 1000 Series Aggregation Services Routers
Cloud Services Router 1000V Series
Note: The SD-WAN feature is not enabled by default.

QID Detection Logic (Authenticated):
The check matches Cisco IOS XE SDWAN version retrieved via Unix Auth using "show version" command.
QID Detection Logic (Unauthenticated):
The check matches Cisco IOS XE version retrieved via SNMP or TCP/IP Fingerprint or NTP or Telnet.

A successful exploit could allow the attacker to overwrite the content of the configuration database and gain root-level access to an affected device.

  • CVSS V3 rated as High - 6.7 severity.
  • CVSS V2 rated as High - 6.9 severity.
    • Solution

    Customers are advised to refer to cisco-sa-iosxesdwan-arbfileov-MVOF3ZZn for more information.

    Vendor References

    CVEs related to QID 317131

    CVE-2021-34723 |
    Software Advisories
    Advisory ID Software Component Link
    cisco-sa-iosxesdwan-arbfileov-MVOF3ZZn URL Logo tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxesdwan-arbfileov-MVOF3ZZn
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