#VU51782 Path traversal in Cisco Systems, Inc products - CVE-2021-1436
Published: March 30, 2021
Vulnerability identifier: #VU51782
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-1436
CWE-ID: CWE-22
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Cisco IOS XE SD-WAN
Cisco 1000 Series Integrated Services Routers
4000 Series Integrated Services Routers
Cisco ASR 1000 Series Aggregation Services Routers
Cloud Services Router 1000V Series
Cisco IOS XE SD-WAN
Cisco 1000 Series Integrated Services Routers
4000 Series Integrated Services Routers
Cisco ASR 1000 Series Aggregation Services Routers
Cloud Services Router 1000V Series
Software vendor:
Cisco Systems, Inc
Cisco Systems, Inc
Description
The vulnerability allows a local user to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences in the CLI. A local administrator can send a specially crafted HTTP request and view arbitrary files on the system.
Remediation
Install update from vendor's website.