Memory leak in Cisco Systems, Inc products - CVE-2021-40114
Published: October 29, 2021
Vulnerability identifier: #VU57799
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-40114
CWE-ID: CWE-401
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Snort
Cisco Firewall Threat Defense (FTD)
Cisco UTD Snort IPS Engine Software for IOS XE
Cisco UTD Engine for IOS XE SD-WAN
Snort
Cisco Firewall Threat Defense (FTD)
Cisco UTD Snort IPS Engine Software for IOS XE
Cisco UTD Engine for IOS XE SD-WAN
Software vendor:
Sourcefire
Cisco Systems, Inc
Sourcefire
Cisco Systems, Inc
Description
The vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak while the Snort detection engine is processing ICMP packets. A remote attacker can send a specially crafted ICMP packet, force the application to leak memory and perform denial of service attack.
Remediation
Install update from vendor's website.