CVE-2021-34741: falha de alta gravidade em Cisco Email Security Appliance (ESA)
Cisco Email Security Appliance Denial of Service Vulnerability
Publicada em · Atualizada em
Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.
21Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 7.5epss 1.3%
A vulnerability in the email scanning algorithm of Cisco AsyncOS software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to perform a denial of service (DoS) attack against an affected device. This vulnerability is due to insufficient input validation of incoming emails. An attacker could exploit this vulnerability by sending a crafted email through Cisco ESA. A successful exploit could allow the attacker to exhaust all the available CPU resources on an affected device for an extended period of time, preventing other emails from being processed and resulting in a DoS condition.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Produtos afetados
Cisco · Cisco Email Security Appliance (ESA)CVEs relacionadas — Cisco Email Security Appliance (ESA)
No mesmo produto, das mais perigosas para as menos.
CVE-2018-15460HIGHCisco Email Security Appliance URL Filtering Denial of Service VulnerabilityEPSS 2.5%CVE-2018-15453HIGHCisco Email Security Appliance Memory Corruption Denial of Service VulnerabilityEPSS 2.3%CVE-2018-0447—Cisco Email Security Appliance URL Filtering Bypass VulnerabilityEPSS 2.3%CVE-2019-1947HIGHCisco Email Security Appliance Denial of Service VulnerabilityEPSS 1.9%CVE-2019-1983HIGHCisco Email Security Appliance and Cisco Content Security Management Appliance Denial of Service VulnerabilityEPSS 1.9%CVE-2022-20653HIGHCisco Email Security Appliance DNS Verification Denial of Service VulnerabilityEPSS 1.8%