Path traversal in Cisco IOS XE SD-WAN Software and Cisco SD-WAN Software

1) Path traversal

EUVDB-ID: #VU67748

Risk: Low

CVSSv4.0: 4.3 [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]

CVE-ID: CVE-2022-20850

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

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 of stand-alone. A local user can send a specially crafted HTTP request and delete arbitrary files on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Cisco IOS XE SD-WAN: 16.9 - 16.10

Cisco SD-WAN: - - 18.4.0

Cisco SD-WAN vBond Orchestrator: All versions

Cisco SD-WAN vEdge Routers: All versions

Cisco SD-WAN vManage: All versions

Cisco SD-WAN vSmart Controller: All versions

CPE2.3

• cpe:2.3:a:cisco_systems:cisco_ios_xe_sd-wan:16.9:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_ios_xe_sd-wan:16.10:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_sd-wan:*:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_sd-wan:18.3.0:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_sd-wan:18.4.0:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_sd-wan_vbond_orchestrator:*:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:cisco_sd-wan_vedge_routers:*:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_sd-wan_vmanage:*:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:cisco_sd-wan_vsmart_controller:*:*:*:*:*:*:*:*

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-arb-file-delete-VB2rVcQv

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.