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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.064 (93.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 93.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.061 · newest: 0.064 · change: +0.003
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.