Arbitrary file corruption in Cisco SD-WAN Software

1) Files or Directories Accessible to External Parties

EUVDB-ID: #VU52931

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-2021-1512

CWE-ID: CWE-552 - Files or Directories Accessible to External Parties

Exploit availability: No

Description

The vulnerability allows a local user to overwrite arbitrary files on the system.

The vulnerability exists in the CLI of Cisco SD-WAN Software when processing user-supplied input parameters of a specific CLI command. A local user can run a specially crafted command and corrupt arbitrary files on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco SD-WAN vBond Orchestrator: before 18.4.6

Cisco SD-WAN vEdge Routers: before 18.4.6

Cisco SD-WAN vEdge Cloud Router: before 18.4.6

Cisco SD-WAN vManage: before 18.4.6

Cisco SD-WAN vSmart Controller: before 18.4.6

CPE2.3

• 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:h:cisco_systems:cisco_sd-wan_vedge_cloud_router:*:*:*:*:*:*:*:*
• 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-sdwan-arbfile-7Qhd9mCn
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvs98457

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.