CVE-2019-1635
A vulnerability in the call-handling functionality of Session Initiation Protocol (SIP) Software for Cisco IP Phone 7800 Series and 8800 Series could allow an unauthenticated, remote attacker to cause an affected phone to reload unexpectedly, resulting…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.97%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A vulnerability in the call-handling functionality of Session Initiation Protocol (SIP) Software for Cisco IP Phone 7800 Series and 8800 Series could allow an unauthenticated, remote attacker to cause an affected phone to reload unexpectedly, resulting in a temporary denial of service (DoS) condition. The vulnerability is due to incomplete error handling when XML data within a SIP packet is parsed. An attacker could exploit this vulnerability by sending a SIP packet that contains a malicious XML payload to an affected phone. A successful exploit could allow the attacker to cause the affected phone to reload unexpectedly, resulting in a temporary DoS condition.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.97% probability · 79th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-399, CWE-755
- Affected
- cisco/ip conference phone 7832 firmware · cisco/ip conference phone 8832 firmware · cisco/ip phone 7811 firmware · cisco/ip phone 7821 firmware · cisco/ip phone 7841 firmware · cisco/ip phone 7861 firmware · cisco/ip phone 8811 firmware · cisco/ip phone 8841 firmware · cisco/ip phone 8845 firmware · cisco/ip phone 8851 firmware · cisco/ip phone 8861 firmware · cisco/ip phone 8865 firmware · cisco/unified ip 8831 conference phone1 firmware · cisco/unified ip 8831 conference phone for third-party call control2 firmware · cisco/wireless ip phone 8821 firmware · cisco/wireless ip phone 8821-ex firmware
- Source
- psirt@cisco.com
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.