Buffer overflow in Cisco Session Initiation Protocol (Sip) Software
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.
Vulnerability class: Buffer Overflow
EPSS: 0.061 (92.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.
Affected products
- Cisco Session Initiation Protocol (Sip) Software — versions 9.3(4) 3rd Party, 9.3(4)SR3 3rd Party, 9.3(4)SR1 3rd Party
- Cisco Ip_phone_7811
- Cisco Ip_phone_7811_firmware — versions 10.3\(1\)sr4, 10.3\(1.9\), 12.5(1)sr3
- Cisco Ip_phone_7821
- Cisco Ip_phone_7821_firmware — versions 10.3\(1\)sr4, 10.3\(1.9\), 12.5(1)sr3
- Cisco Ip_phone_7832
- Cisco Ip_phone_7832_firmware — versions 10.3\(1\)sr4, 10.3\(1.9\), 12.5(1)sr3
- Cisco Ip_phone_7841
- Cisco Ip_phone_7841_firmware — versions 10.3\(1\)sr4, 10.3\(1.9\), 12.5(1)sr3
- Cisco Ip_phone_7861
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2022-20968?
- CVE-2022-20968 is a high-severity vulnerability in Cisco Session Initiation Protocol (Sip) Software, classified under Out-of-bounds Write. CVSS score: 8.1/10. Published 2022-12-12.
- How severe is CVE-2022-20968?
- High severity. CVSS v3 base score is 8.1 out of 10.