CVE-2019-1691

A vulnerability in the detection engine of Cisco Firepower Threat Defense Software could allow an unauthenticated, remote attacker to cause the unexpected restart of the SNORT detection engine, resulting in a denial of service (DoS) condition. The vulnerability is due to the incomplete error handling of the SSL or TLS packet header during the connection establishment. An attacker could exploit this vulnerability by sending a crafted SSL or TLS packet during the connection handshake. An exploit could allow the attacker to cause the SNORT detection engine to unexpectedly restart, resulting in a partial DoS condition while the detection engine restarts. Versions prior to 6.2.3.4 are affected.

CVSS v3 5.8 MEDIUM
CVSS v2.0 5.0 MEDIUM

5.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope CHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
http://www.securityfocus.com/bid/107099	Third Party Advisory VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190220-fpwr-ssltls-dos	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2019-02-21 20:29

Updated : 2024-02-28 16:48

NVD link : CVE-2019-1691

Mitre link : CVE-2019-1691

CVE.ORG link : CVE-2019-1691

JSON object : View

Products Affected

cisco

firepower_threat_defense

CWE

CWE-755

Improper Handling of Exceptional Conditions

CWE-20

Improper Input Validation

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