Cisco fixes 5 critical flaws that could allow router firewall takeover

Cisco addresses a critical remote code execution (RCE), authentication bypass, and static default credential flaws that could lead to full router takeover.

Cisco has released security updates to address critical remote code execution (RCE), authentication bypass, and static default credential vulnerabilities affecting multiple router and firewall devices. An attacker could exploit the vulnerabilities to completely takeover the network devices.

Cisco also addressed a privilege escalation issue that impacts the Cisco Prime License Manager software.

The five vulnerabilities have been labeled as critical and rated 9.8 out of 10 CVSS base score, below the list of the issues fixed by Cisco.

Vulnerability	CVE-ID
Cisco Small Business RV110W Wireless-N VPN Firewall Static Default Credential Vulnerability	CVE-2020-3330
Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote Command Execution Vulnerability	CVE-2020-3323
Cisco RV110W, RV130, RV130W, and RV215W Routers Authentication Bypass Vulnerability	CVE-2020-3144
Cisco RV110W and RV215W Series Routers Arbitrary Code Execution Vulnerability	CVE-2020-3331
Cisco Prime License Manager Privilege Escalation Vulnerability	CVE-2020-3140

The Cisco Product Security Incident Response Team (PSIRT) confirmed that it is not aware of any public announcements or malicious use of the above vulnerabilities.

The tech giant confirmed that there are no workarounds that fix these vulnerabilities.

The company acknowledged the external security researchers Larryxi of XDSEC, Gyengtak Kim, Jeongun Baek, and Sanghyuk Lee of GeekPwn, Quentin Kaiser, and Adam Engle of AdventHealth for the flaws.

Cisco released security updates to address other 22 high and medium severity security vulnerabilities impacting several routers, WebEx, Cisco SD-WAN Solution Software versions and other software.

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Pierluigi Paganini

(SecurityAffairs – hacking, Cisco)

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