PT-2018-8746 · Cisco · Cisco Ip Phone 7800+2

Published 2018-06-07 · Updated 2019-10-09 · CVE-2018-0316

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions: Cisco IP Phone 6800, 7800, and 8800 Series Phones with Multiplatform Firmware versions prior to 11.1(2)

Description: A vulnerability in the Session Initiation Protocol (SIP) call-handling functionality could allow an unauthenticated, remote attacker to cause an affected phone to reload unexpectedly, resulting in a temporary denial of service (DoS) condition. This occurs because the firmware incorrectly handles errors when an incoming phone call is not answered. An attacker could exploit this by sending maliciously crafted SIP packets to an affected phone, causing it to reload and resulting in a temporary DoS condition.

Recommendations: For Cisco IP Phone 6800, 7800, and 8800 Series Phones with Multiplatform Firmware versions prior to 11.1(2), update to Release 11.1(2) or later to resolve the issue. As a temporary workaround, consider restricting access to the SIP call-handling functionality until a patch is applied.

Fix

Improper Handling of Exceptional Conditions

Weakness Enumeration

CWE-755

CWE-399

Related Identifiers

CVE-2018-0316

Affected Products

Cisco Ip Phone 6800

Cisco Ip Phone 7800

Cisco Ip Phone 8800

References · 4

• https://osv.dev/vulnerability/CVE-2018-0316 · Vendor Advisory
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180606-multiplatform-sip · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-0316 · Security Note
• http://securitytracker.com/id/1041073 · Note