Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| 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 |
CWE
CWE-400
References
ADP enrichment
No English description supplied.