Heap-based buffer overflow in Cisco Systems, Inc products - CVE-2023-20156
Published: May 17, 2023
Vulnerability identifier: #VU76263
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-20156
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error when processing requests sent to the web interface. A remote non-authenticated attacker can send a specially crafted request to the web interface, trigger a heap-based buffer overflow and perform a denial of service (DoS) attack.
Affected software
Cisco Small Business 200 Series Smart Switches
Cisco Small Business 300 Series Managed Switches
Cisco Small Business 500 Series Stackable Managed Switches
Cisco 250 Series Smart Switches
Cisco 350 Series Managed Switches
Cisco 350X Series Stackable Managed Switches
Cisco 550X Series Stackable Managed Switches
Cisco Small Business 300 Series Managed Switches
Cisco Small Business 500 Series Stackable Managed Switches
Cisco 250 Series Smart Switches
Cisco 350 Series Managed Switches
Cisco 350X Series Stackable Managed Switches
Cisco 550X Series Stackable Managed Switches
How to mitigate CVE-2023-20156
Install updates from vendor's website.
Cisco 250 Series Smart Switches - update to 2.5.9.16
Cisco 350 Series Managed Switches - update to 2.5.9.16
Cisco 350X Series Stackable Managed Switches - update to 2.5.9.16
Cisco 550X Series Stackable Managed Switches - update to 2.5.9.16
Cisco 350 Series Managed Switches - update to 2.5.9.16
Cisco 350X Series Stackable Managed Switches - update to 2.5.9.16
Cisco 550X Series Stackable Managed Switches - update to 2.5.9.16