SB2021032414 - Arbitrary file corruption in Cisco IOS XE SD-WAN Software
Published: March 24, 2021
Security Bulletin ID
SB2021032414
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Files or Directories Accessible to External Parties (CVE-ID: CVE-2021-1434)
CWE-ID: CWE-552 - Files or Directories Accessible to External Parties
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to corrupt arbitrary files on the system.
The vulnerability exists in the CLI of Cisco IOS XE SD-WAN due to improper input validation. A local user can overwrite and corrupt arbitrary files on the system.
The vulnerability affects the following products with enabled SD-WAN:
- 1000 Series Integrated Services Routers (ISRs)
- 4000 Series ISRs
- ASR 1000 Series Aggregation Services Routers
- Cloud Services Router 1000V Series
Remediation
Install update from vendor's website.