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CVE-2022-20968

HIGHCVSS 8.8/10EPSS 6.35%

Last modified

CVE-2022-20968 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. A vulnerability in the Cisco Discovery Protocol processing feature of Cisco IP Phone 7800 and 8800 Series firmware could allow an unauthenticated, adjacent attacker to cause a stack overflow on an affected device. This vulnerability is due to insufficient input validation of received Cisco Discovery Protocol packets. An attacker could exploit this vulnerability by sending crafted Cisco Discovery Protocol traffic to an affected device. EPSS estimates a 6.35% chance of exploitation in the next 30 days.

Description

A vulnerability in the Cisco Discovery Protocol processing feature of Cisco IP Phone 7800 and 8800 Series firmware could allow an unauthenticated, adjacent attacker to cause a stack overflow on an affected device. This vulnerability is due to insufficient input validation of received Cisco Discovery Protocol packets. An attacker could exploit this vulnerability by sending crafted Cisco Discovery Protocol traffic to an affected device. A successful exploit could allow the attacker to cause a stack overflow, resulting in possible remote code execution or a denial of service (DoS) condition on an affected device.

Metrics

CVSS 3.1
8.8/10

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
6.35%

92.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoIp Phone 7811 Firmware9.3\(3\)
CiscoIp Phone 7811 Firmware9.3\(4\)
CiscoIp Phone 7811 Firmware9.3\(4\)sr1
CiscoIp Phone 7811 Firmware9.3\(4\)sr2
CiscoIp Phone 7811 Firmware9.3\(4\)sr3
CiscoIp Phone 7811 Firmware10.1\(1\)sr1
CiscoIp Phone 7811 Firmware10.1\(1\)sr2
CiscoIp Phone 7811 Firmware10.1\(1.9\)
CiscoIp Phone 7811 Firmware10.2\(1\)
CiscoIp Phone 7811 Firmware10.2\(1\)sr1
CiscoIp Phone 7811 Firmware10.2\(2\)
CiscoIp Phone 7811 Firmware10.3\(1\)
CiscoIp Phone 7811 Firmware10.3\(1\)sr1
CiscoIp Phone 7811 Firmware10.3\(1\)sr2
CiscoIp Phone 7811 Firmware10.3\(1\)sr3
CiscoIp Phone 7811 Firmware10.3\(1\)sr4
CiscoIp Phone 7811 Firmware10.3\(1\)sr4b
CiscoIp Phone 7811 Firmware10.3\(1\)sr5
CiscoIp Phone 7811 Firmware10.3\(1\)sr6
CiscoIp Phone 7811 Firmware10.3\(1\)sr7
CiscoIp Phone 7811 Firmware10.3\(1.9\)
CiscoIp Phone 7811 Firmware10.3\(1.11\)
CiscoIp Phone 7811 Firmware10.3\(2\)
CiscoIp Phone 7811 Firmware10.4\(1\)
CiscoIp Phone 7811 Firmware10.4\(1\)sr2
CiscoIp Phone 7811 Firmware11-0-1msr1-1
CiscoIp Phone 7811 Firmware11.0\(0.7\)
CiscoIp Phone 7811 Firmware11.0\(1\)
CiscoIp Phone 7811 Firmware11.5\(1\)
CiscoIp Phone 7811 Firmware11.5\(1\)sr1
CiscoIp Phone 7811 Firmware11.7\(1\)
CiscoIp Phone 7811 Firmware12.0\(1\)
CiscoIp Phone 7811 Firmware12.0\(1\)sr1
CiscoIp Phone 7811 Firmware12.0\(1\)sr2
CiscoIp Phone 7811 Firmware12.0\(1\)sr3
CiscoIp Phone 7811 Firmware12.1\(1\)
CiscoIp Phone 7811 Firmware12.1\(1\)sr1
CiscoIp Phone 7811 Firmware12.5\(1\)
CiscoIp Phone 7811 Firmware12.5\(1\)sr1
CiscoIp Phone 7811 Firmware12.5\(1\)sr2
CiscoIp Phone 7811 Firmware12.5\(1\)sr3
CiscoIp Phone 7811 Firmware12.6\(1\)
CiscoIp Phone 7811 Firmware12.6\(1\)sr1
CiscoIp Phone 7811 Firmware12.7\(1\)
CiscoIp Phone 7811 Firmware12.7\(1\)sr1
CiscoIp Phone 7811 Firmware12.8\(1\)
CiscoIp Phone 7811 Firmware12.8\(1\)sr1
CiscoIp Phone 7811 Firmware12.8\(1\)sr2
CiscoIp Phone 7811 Firmware14.0\(1\)
CiscoIp Phone 7811 Firmware14.0\(1\)sr1

Showing 50 of 702 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2022-20968?
A vulnerability in the Cisco Discovery Protocol processing feature of Cisco IP Phone 7800 and 8800 Series firmware could allow an unauthenticated, adjacent attacker to cause a stack overflow on an affected device. This vulnerability is due to insufficient input validation of received Cisco Discovery Protocol packets. An attacker could exploit this vulnerability by sending crafted Cisco Discovery Protocol traffic to an affected device. A successful exploit could allow the attacker to cause a stack overflow, resulting in possible remote code execution or a denial of service (DoS) condition on an affected device.
How severe is CVE-2022-20968?
CVE-2022-20968 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 6.35% probability of exploitation in the next 30 days.
How do I fix CVE-2022-20968?
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.

Are you affected by CVE-2022-20968?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST