CVE-2022-20960 (GCVE-0-2022-20960)

Vulnerability from cvelistv5 – Published: 2022-11-03 19:30 – Updated: 2024-08-03 02:31
VLAI?
Summary
A 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.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-400 - Uncontrolled Resource Consumption
Assigner
References
Impacted products
Vendor Product Version
Cisco Cisco Secure Email Affected: 11.0.3-238
Affected: 11.1.0-069
Affected: 11.1.0-131
Affected: 11.1.0-128
Affected: 12.0.0-419
Affected: 12.1.0-071
Affected: 12.1.0-087
Affected: 12.1.0-089
Affected: 13.0.0-392
Affected: 13.5.1-277
Affected: 12.5.0-066
Affected: 14.0.0-698
Affected: 14.2.0-620
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            "tags": [
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            "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-dos-gdghHmbV"
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    "cna": {
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        }
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    "datePublished": "2022-11-03T19:30:02.598Z",
    "dateReserved": "2021-11-02T13:28:29.196Z",
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  }
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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