Buffer overflow in Cisco Small Business Ip Phones
CVE-2024-20451
Multiple vulnerabilities in the web-based management interface of Cisco Small Business SPA300 Series IP Phones and Cisco Small Business SPA500 Series IP Phones could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly. These vulnerabilities exist because HTTP packets are not properly checked for errors. An attacker could exploit this vulnerability by sending a crafted HTTP packet to the remote interface of an affected device. A successful exploit could allow the attacker to cause a DoS condition on the device.
Vulnerability class: Buffer Overflow
EPSS: 0.008 (52.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Cisco Small Business Ip Phones — versions 7.6.0, 7.6.2, 7.6.2SR3
- Cisco Spa_301_1_line_ip_phone
- Cisco Spa_301_firmware
- Cisco Spa_303_3_line_ip_phone
- Cisco Spa_303_firmware
- Cisco Spa_501g_8-line_ip_phone
- Cisco Spa_501g_firmware
- Cisco Spa_502g_1-line_ip_phone
- Cisco Spa_502g_firmware
- Cisco Spa_504g_4-line_ip_phone
Weakness classification (CWE)
References
- psirt@cisco.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2024-20451?
- CVE-2024-20451 is a high-severity vulnerability in Cisco Small Business Ip Phones, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2024-08-07.
- How severe is CVE-2024-20451?
- High severity. CVSS v3 base score is 7.5 out of 10.