CiscoCVELIST:CVE-2019-1873CVE-2019-1873 Cisco ASA and FTD Software Cryptographic TLS and SSL Driver Denial of Service Vulnerability
8.6 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
8.6 High
AI Score
Confidence
High
0.002 Low
EPSS
Percentile
52.4%
A vulnerability in the cryptographic driver for Cisco Adaptive Security Appliance Software (ASA) and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to reboot unexpectedly. The vulnerability is due to incomplete input validation of a Secure Sockets Layer (SSL) or Transport Layer Security (TLS) ingress packet header. An attacker could exploit this vulnerability by sending a crafted TLS/SSL packet to an interface on the targeted device. An exploit could allow the attacker to cause the device to reload, which will result in a denial of service (DoS) condition. Note: Only traffic directed to the affected system can be used to exploit this vulnerability. This vulnerability affects systems configured in routed and transparent firewall mode and in single or multiple context mode. This vulnerability can be triggered by IPv4 and IPv6 traffic. A valid SSL or TLS session is required to exploit this vulnerability.
CNA Affected
[
{
"product": "Cisco Adaptive Security Appliance (ASA) Software ",
"vendor": "Cisco",
"versions": [
{
"lessThan": "9.4.4.36",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThan": "9.6.4.29",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThan": "9.8.4.3",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThan": "9.9.2.52",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThan": "9.10.1.22",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThan": "9.12.2",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
]Related
8.6 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
8.6 High
AI Score
Confidence
High
0.002 Low
EPSS
Percentile
52.4%