CVE-2021-34698

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Summary

CVECVE-2021-34698
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-10-06 20:15:00 UTC
Updated2023-11-07 03:36:00 UTC
DescriptionA vulnerability in the proxy service of Cisco AsyncOS for Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to exhaust system memory and cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper memory management in the proxy service of an affected device. An attacker could exploit this vulnerability by establishing a large number of HTTPS connections to the affected device. A successful exploit could allow the attacker to cause the system to stop processing new connections, which could result in a DoS condition. Note: Manual intervention may be required to recover from this situation.

Risk And Classification

Problem Types: CWE-401

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Cisco Asyncos All All All All
Hardware Cisco Web Security Appliance S170 - All All All
Hardware Cisco Web Security Appliance S190 - All All All
Hardware Cisco Web Security Appliance S380 - All All All
Hardware Cisco Web Security Appliance S390 - All All All
Hardware Cisco Web Security Appliance S680 - All All All
Hardware Cisco Web Security Appliance S690 - All All All
Hardware Cisco Web Security Appliance S690x - All All All

References

ReferenceSourceLinkTags
Cisco Web Security Appliance Proxy Service Denial of Service Vulnerability CISCO tools.cisco.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 317072 Cisco Web Security Appliance Proxy Service Denial of Service (DoS) Vulnerability (cisco-sa-wsa-dos-fmHdKswk)
  • 317079 Cisco Web Security Appliance Proxy Service Denial of Service (DoS) Vulnerability (cisco-sa-wsa-dos-fmHdKswk)
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