CVE-2022-20960
published 2022-11-04CVE-2022-20960: A vulnerability in Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated remote attacker to cause a denial of service…
PriorityP340high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.78%
51.8th percentile
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.
Affected
16 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| cisco | cisco_secure_email | — | — |
| cisco | cisco_secure_email | — | — |
| cisco | cisco_secure_email | — | — |
| cisco | cisco_secure_email | — | — |
| cisco | cisco_secure_email | — | — |
| cisco | cisco_secure_email | — | — |
| cisco | cisco_secure_email | — | — |
| cisco | cisco_secure_email | — | — |
| cisco | cisco_secure_email | — | — |
| cisco | cisco_secure_email | — | — |
| cisco | cisco_secure_email | — | — |
| cisco | cisco_secure_email | — | — |
| cisco | cisco_secure_email | — | — |
| cisco | email_security_appliance | < 14.2.1-015 | 14.2.1-015 |
| cisco | email_security_appliance | — | — |
| cisco | email_security_appliance | >= 14.3.0 < 14.3.0-020 | 14.3.0-020 |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
vendor_cisco7.5HIGH
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Cisco
Cisco Email Security Appliance Denial of Service Vulnerability
vendor_cisco·2022-11-02·CVSS 7.5
CVE-2022-20960 [HIGH] CWE-400 Cisco Email Security Appliance Denial of Service Vulnerability
Cisco Email Security Appliance Denial of Service Vulnerability
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
Cisco
Cisco Email Security Appliance Denial of Service Vulnerability
vendor_cisco·CVSS 3.1
CVE-2022-20960 Cisco Email Security Appliance Denial of Service Vulnerability
CVE-2022-20960: Cisco Email Security Appliance Denial of Service Vulnerability
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 withi
GHSA
GHSA-m7jq-xvr4-f7xc: A vulnerability in Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated remote attacker to cause a denial of
ghsa_unreviewed·2022-11-04
CVE-2022-20960 [HIGH] CWE-295 GHSA-m7jq-xvr4-f7xc: A vulnerability in Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated remote attacker to cause a denial of
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.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2022-11-04
Published