A vulnerability in Server Name Identification (SNI) request filtering of Cisco Web Security Appliance (WSA), Cisco Firepower Threat Defense (FTD), and the Snort detection engine could allow an unauthenticated, remote attacker to bypass filtering technology on an affected device and exfiltrate data from a compromised host. This vulnerability is due to inadequate filtering of the SSL handshake. An attacker could exploit this vulnerability by using data from the SSL client hello packet to communicate with an external server. A successful exploit could allow the attacker to execute a command-and-control attack on a compromised host and perform additional data exfiltration attacks.
Metrics
Affected Vendors & Products
References
History
Tue, 26 Nov 2024 16:45:00 +0000
Type | Values Removed | Values Added |
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First Time appeared |
Cisco secure Firewall Management Center
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CPEs | cpe:2.3:a:cisco:secure_firewall_management_center:2.9.18:*:*:*:*:*:*:* | |
Vendors & Products |
Cisco firepower Management Center
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Cisco secure Firewall Management Center
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Thu, 07 Nov 2024 22:15:00 +0000
Type | Values Removed | Values Added |
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Metrics |
ssvc
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MITRE
Status: PUBLISHED
Assigner: cisco
Published: 2021-08-18T19:40:38.750163Z
Updated: 2024-11-07T22:03:41.730Z
Reserved: 2021-06-15T00:00:00
Link: CVE-2021-34749
Vulnrichment
Updated: 2024-08-04T00:19:48.253Z
NVD
Status : Modified
Published: 2021-08-18T20:15:07.930
Modified: 2024-11-26T16:09:02.407
Link: CVE-2021-34749
Redhat
No data.