Vulnerability identifier: #VU13225
Vulnerability risk: Low
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID:
CWE-ID:
CWE-388
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Cisco 8800 Series IP Phones
Hardware solutions /
Office equipment, IP-phones, print servers
Cisco 7800 Series IP Phones
Hardware solutions /
Office equipment, IP-phones, print servers
Cisco 6800 Series IP Phones
Hardware solutions /
Office equipment, IP-phones, print servers
Vendor: Cisco Systems, Inc
Description
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists in the Session Initiation Protocol (SIP) call-handling functionality of Cisco IP Phone 6800, 7800, and 8800 Series Phones with Multiplatform Firmware due to improper handling of errors that could occur when an incoming phone call is not answered. A remote attacker can send a set of maliciously crafted SIP packets and cause the affected phone to reload unexpectedly.
Mitigation
Update to version 11.1(2).
Vulnerable software versions
Cisco 8800 Series IP Phones: before 11.1.2
Cisco 7800 Series IP Phones: before 11.1.2
Cisco 6800 Series IP Phones: before 11.1.2
External links
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180606-multiplatfor...
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.