Cisco IP Phones Web Server Remote Code Execution and Denial of Service Vulnerability
CVE-2020-3161

9.8CRITICAL

Key Information:

Vendor

Cisco
Status
Cisco Ip Phone
Vendor
CVE Published:
15 April 2020

Badges

👾 Exploit Exists🟣 EPSS 80%🦅 CISA Reported

What is CVE-2020-3161?

A vulnerability in the web server for Cisco IP Phones could allow an unauthenticated, remote attacker to execute code with root privileges or cause a reload of an affected IP phone, resulting in a denial of service (DoS) condition. The vulnerability is due to a lack of proper input validation of HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to the web server of a targeted device. A successful exploit could allow the attacker to remotely execute code with root privileges or cause a reload of an affected IP phone, resulting in a DoS condition.

CISA has reported CVE-2020-3161

CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed CVE-2020-3161 as being exploited but is not known by the CISA to be used in ransomware campaigns. This is subject to change at pace

The CISA's recommendation is: Apply updates per vendor instructions.

Affected Version(s)

Cisco IP phone

References

https://tools.cisco.com/security/center/content/CiscoSecu...
vendor-advisoryx_refsource_CISCO
http://packetstormsecurity.com/files/157265/Cisco-IP-Phon...
x_refsource_MISC

EPSS Score

80% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🦅

    CISA Reported

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.