Privilege escalation in Cisco RV340, RV340W, RV345 and RV345P Dual WAN Gigabit VPN Routers
| 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 |
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 | Cisco Systems, Inc |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Permissions, Privileges, and Access Controls
EUVDB-ID: #VU52966
Risk: Low
CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-1520
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe 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.
MitigationInstall updates from vendor's website.
Vulnerable software versionsCisco 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
CPE2.3- cpe:2.3:h:cisco_systems:cisco_rv340_dual_wan_gigabit_vpn_router:*:*:*:*:*:*:*:*
- cpe:2.3:h:cisco_systems:cisco_rv340w_dual_wan_gigabit_wireless-ac_vpn_router:*:*:*:*:*:*:*:*
- cpe:2.3:h:cisco_systems:cisco_rv345_dual_wan_gigabit_vpn_router:*:*:*:*:*:*:*:*
- cpe:2.3:h:cisco_systems:cisco_rv345p_dual_wan_gigabit_vpn_router:*:*:*:*:*:*:*:*
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.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
