CVE-2019-1599
7.8 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
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:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
8.4 High
AI Score
Confidence
High
0.002 Low
EPSS
Percentile
52.4%
A vulnerability in the network stack of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on the affected device. The vulnerability is due to an issue with allocating and freeing memory buffers in the network stack. An attacker could exploit this vulnerability by sending crafted TCP streams to an affected device in a sustained way. A successful exploit could cause the network stack of an affected device to run out of available buffers, impairing operations of control plane and management plane protocols, resulting in a DoS condition. Note: This vulnerability can be triggered only by traffic that is destined to an affected device and cannot be exploited using traffic that transits an affected device. Nexus 1000V Switch for Microsoft Hyper-V is affected in versions prior to 5.2(1)SM3(2.1). Nexus 1000V Switch for VMware vSphere is affected in versions prior to 5.2(1)SV3(4.1a). Nexus 3000 Series Switches are affected in versions prior to 7.0(3)I7(6) and 9.2(2). Nexus 3500 Platform Switches are affected in versions prior to 6.0(2)A8(11), 7.0(3)I7(6), and 9.2(2). Nexus 3600 Platform Switches are affected in versions prior to 7.0(3)F3(5) and 9.2(2). Nexus 5500, 5600, and 6000 Series Switches are affected in versions prior to 7.1(5)N1(1b) and 7.3(5)N1(1). Nexus 7000 and 7700 Series Switches are affected in versions prior to 6.2(22. Nexus 9500 R-Series Line Cards and Fabric Modules are affected in versions prior to 7.0(3)F3(5) and 9.2(2). UCS 6200 and 6300 Series Fabric Interconnect are affected in versions prior to 3.2(3j) and 4.0(2a). UCS 6400 Series Fabric Interconnect are affected in versions prior to 4.0(2a).
Affected configurations
| CPE | Name | Operator | Version |
|---|---|---|---|
| cisco:nx-os | cisco nx-os | lt | 9.2\(2\) |
CNA Affected
[
{
"product": "Nexus 1000V Switch for Microsoft Hyper-V ",
"vendor": "Cisco",
"versions": [
{
"lessThan": "5.2(1)SM3(2.1)",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"product": "Nexus 1000V Switch for VMware vSphere ",
"vendor": "Cisco",
"versions": [
{
"lessThan": "5.2(1)SV3(4.1a)",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"product": "Nexus 3000 Series Switches",
"vendor": "Cisco",
"versions": [
{
"lessThan": "7.0(3)I7(6)",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThan": "9.2(2)",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"product": "Nexus 3500 Platform Switches",
"vendor": "Cisco",
"versions": [
{
"lessThan": "6.0(2)A8(11)",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThan": "7.0(3)I7(6)",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThan": "9.2(2)",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"product": "Nexus 3600 Platform Switches",
"vendor": "Cisco",
"versions": [
{
"lessThan": "7.0(3)F3(5)",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThan": "9.2(2)",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"product": "Nexus 5500, 5600, and 6000 Series Switches",
"vendor": "Cisco",
"versions": [
{
"lessThan": "7.1(5)N1(1b)",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThan": "7.3(5)N1(1)",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"product": "Nexus 7000 and 7700 Series Switches",
"vendor": "Cisco",
"versions": [
{
"lessThan": "6.2(22)",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThan": "7.3(3)D1(1)",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThan": "8.2(3)",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThan": "8.3(2)",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"product": "Nexus 9000 Series Switches in Standalone NX-OS Mode",
"vendor": "Cisco",
"versions": [
{
"lessThan": "7.0(3)I7(6)",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThan": "9.2(2)",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"product": "Nexus 9500 R-Series Line Cards and Fabric Modules",
"vendor": "Cisco",
"versions": [
{
"lessThan": "7.0(3)F3(5)",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThan": "9.2(2)",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"product": "UCS 6200 and 6300 Series Fabric Interconnect",
"vendor": "Cisco",
"versions": [
{
"lessThan": "3.2(3j)",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThan": "4.0(2a)",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"product": "UCS 6400 Series Fabric Interconnect",
"vendor": "Cisco",
"versions": [
{
"lessThan": "4.0(2a)",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
]Related
7.8 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
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:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
8.4 High
AI Score
Confidence
High
0.002 Low
EPSS
Percentile
52.4%