CVE-2022-20960

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Summary

CVECVE-2022-20960
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2022-11-04 18:15:00 UTC
Updated2024-01-25 17:15:00 UTC
DescriptionA vulnerability in Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper handling of certain TLS connections that are processed by an affected device. An attacker could exploit this vulnerability by establishing a large number of concurrent TLS connections to an affected device. A successful exploit could allow the attacker to cause the device to drop new TLS email messages that come from the associated email servers. Exploitation of this vulnerability does not cause the affected device to unexpectedly reload. The device will recover autonomously within a few hours of when the attack is halted or mitigated.

Risk And Classification

Problem Types: CWE-295

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Cisco Email Security Appliance All All All All

References

ReferenceSourceLinkTags
tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-do... MISC tools.cisco.com
Cisco Email Security Appliance Denial of Service Vulnerability sec.cloudapps.cisco.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 317256 Cisco Email Security Appliance (ESA) Denial of Service (DoS) Vulnerability (cisco-sa-esa-dos-gdghHmbV)
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