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THREATINT
PUBLISHED

CVE-2021-40114

Multiple Cisco Products Snort Memory Leak Denial of Service Vulnerability



Description

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.

Reserved 2021-08-25 | Published 2021-10-27 | Updated 2024-11-07 | Assigner cisco


MEDIUM: 6.8CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H

Problem types

CWE-770

Product status

Any version
affected

References

tools.cisco.com/...urityAdvisory/cisco-sa-snort-dos-s2R7W9UU (20211027 Multiple Cisco Products Snort Memory Leak Denial of Service Vulnerability) vendor-advisory

lists.debian.org/debian-lts-announce/2023/02/msg00011.html ([debian-lts-announce] 20230210 [SECURITY] [DLA 3317-1] snort security update) mailing-list

www.debian.org/security/2023/dsa-5354 (DSA-5354) vendor-advisory

cve.org (CVE-2021-40114)

nvd.nist.gov (CVE-2021-40114)

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