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CVE-2019-1922

MEDIUMCVSS 5.3/10EPSS 1.32%

Last modified

CVE-2019-1922 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. A vulnerability in Cisco SIP IP Phone Software for Cisco IP Phone 7800 Series and 8800 Series could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected phone. The vulnerability is due to insufficient validation of input Session Initiation Protocol (SIP) packets. EPSS estimates a 1.32% chance of exploitation in the next 30 days.

Description

A vulnerability in Cisco SIP IP Phone Software for Cisco IP Phone 7800 Series and 8800 Series could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected phone. The vulnerability is due to insufficient validation of input Session Initiation Protocol (SIP) packets. An attacker could exploit this vulnerability by altering the SIP replies that are sent to the affected phone during the registration process. A successful exploit could allow the attacker to cause the phone to reboot and not complete the registration process.

Metrics

CVSS 3.0
5.3/10

CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS Probability
1.32%

67.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoIp Conference Phone 7832 FirmwareAll versions
CiscoIp Conference Phone 8832 Firmware11.5\(1\)
CiscoIp Conference Phone 8832 Firmware12.5\(1\)
CiscoIp Phone 7811 FirmwareAll versions
CiscoIp Phone 7821 FirmwareAll versions
CiscoIp Phone 7841 FirmwareAll versions
CiscoIp Phone 7861 FirmwareAll versions
CiscoIp Phone 8811 Firmware11.5\(1\)
CiscoIp Phone 8811 Firmware12.5\(1\)
CiscoIp Phone 8841 Firmware11.5\(1\)
CiscoIp Phone 8841 Firmware12.5\(1\)
CiscoIp Phone 8845 Firmware11.5\(1\)
CiscoIp Phone 8845 Firmware12.5\(1\)
CiscoIp Phone 8851 Firmware11.5\(1\)
CiscoIp Phone 8851 Firmware12.5\(1\)
CiscoIp Phone 8861 Firmware11.5\(1\)
CiscoIp Phone 8861 Firmware12.5\(1\)
CiscoIp Phone 8865 Firmware11.5\(1\)
CiscoIp Phone 8865 Firmware12.5\(1\)

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-1922?
A vulnerability in Cisco SIP IP Phone Software for Cisco IP Phone 7800 Series and 8800 Series could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected phone. The vulnerability is due to insufficient validation of input Session Initiation Protocol (SIP) packets. An attacker could exploit this vulnerability by altering the SIP replies that are sent to the affected phone during the registration process. A successful exploit could allow the attacker to cause the phone to reboot and not complete the registration process.
How severe is CVE-2019-1922?
CVE-2019-1922 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.32% probability of exploitation in the next 30 days.
How do I fix CVE-2019-1922?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

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Source: NVD / NIST