Vulnerability Details : CVE-2021-40114
Multiple Cisco products are affected by a vulnerability in the way the Snort detection engine processes ICMP traffic that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper memory resource management while the Snort detection engine is processing ICMP packets. An attacker could exploit this vulnerability by sending a series of ICMP packets through an affected device. A successful exploit could allow the attacker to exhaust resources on the affected device, causing the device to reload.
Vulnerability category: Denial of service
Products affected by CVE-2021-40114
- cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:unified_threat_defense:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:unified_threat_defense:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:unified_threat_defense:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:secure_firewall_management_center:2.9.14.0:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:secure_firewall_management_center:2.9.15:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:secure_firewall_management_center:2.9.16:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:secure_firewall_management_center:2.9.17:*:*:*:*:*:*:*
- cpe:2.3:a:snort:snort:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-40114
0.41%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 74 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-40114
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
7.8
|
HIGH | AV:N/AC:L/Au:N/C:N/I:N/A:C |
10.0
|
6.9
|
NIST | |
6.8
|
MEDIUM | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H |
2.2
|
4.0
|
Cisco Systems, Inc. | |
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST | |
6.8
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H |
2.2
|
4.0
|
Cisco Systems, Inc. | 2024-11-26 |
CWE ids for CVE-2021-40114
-
The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory.Assigned by: nvd@nist.gov (Primary)
-
The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.Assigned by: ykramarz@cisco.com (Secondary)
References for CVE-2021-40114
-
https://lists.debian.org/debian-lts-announce/2023/02/msg00011.html
[SECURITY] [DLA 3317-1] snort security update
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-dos-s2R7W9UU
Multiple Cisco Products Snort Memory Leak Denial of Service VulnerabilityVendor Advisory
-
https://www.debian.org/security/2023/dsa-5354
Debian -- Security Information -- DSA-5354-1 snort
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