CVE-2022-20968
What it is
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.
At a glance
- Exploitability
- Can be exploited from the same network segment without logging in. High risk of data tampering, service disruption.
- Exploit odds
- 6.4% chance of exploitation in the next 30 days (EPSS).
- Fix
- No patch or advisory is linked yet. Look at mitigations or restrict exposure.
Timeline
- ReservedThe CVE id was reserved by its CNA
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 6.4% in the next 30 days (EPSS).
- Severity: 8.1 HIGH (CVSS).
- Fix: none linked yet, which raises it.
Details
- Published
- Last modified
- Exploit probability
- 6.4% · EPSS, next 30 days
- Weakness
- CWE-787 · Out-of-bounds write
- Record status
- Modified
Affected
- Cisco Ip Phone 7811 Firmware 9.3\(3\)
- Cisco Ip Phone 7811 Firmware 9.3\(4\)
- Cisco Ip Phone 7811 Firmware 9.3\(4\)sr1
- Cisco Ip Phone 7811 Firmware 9.3\(4\)sr2
- Cisco Ip Phone 7811 Firmware 9.3\(4\)sr3
- Cisco Ip Phone 7811 Firmware 10.1\(1\)sr1
- Cisco Ip Phone 7811 Firmware 10.1\(1\)sr2
- Cisco Ip Phone 7811 Firmware 10.1\(1.9\)
Attack profile CVSS 3.1 · 8.1
- Attack vector
- Adjacent network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2022-20968.md and follow it. Check whether this project is affected by CVE-2022-20968. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
