Privilege escalation in Cisco RV340, RV340W, RV345 and RV345P Dual WAN Gigabit VPN Routers



Published: 2021-05-07
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-1520
CWE-ID CWE-264
Exploitation vector Local
Public exploit N/A
Vulnerable software
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Cisco RV340 Dual WAN Gigabit VPN Router
Hardware solutions / Routers & switches, VoIP, GSM, etc

Cisco RV340W Dual WAN Gigabit Wireless-AC VPN Router
Hardware solutions / Routers & switches, VoIP, GSM, etc

Cisco RV345 Dual WAN Gigabit VPN Router
Hardware solutions / Routers & switches, VoIP, GSM, etc

Cisco RV345P Dual WAN Gigabit VPN Router
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU52966

Risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-1520

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to an internal messaging service does not properly sanitize input. A local administrator can run arbitrary commands with root privileges on the underlying OS.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco RV340 Dual WAN Gigabit VPN Router: before 1.0.03.21

Cisco RV340W Dual WAN Gigabit Wireless-AC VPN Router: before 1.0.03.21

Cisco RV345 Dual WAN Gigabit VPN Router: before 1.0.03.21

Cisco RV345P Dual WAN Gigabit VPN Router: before 1.0.03.21

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-34x-privesc-GLN8ZAQE


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.



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