7.4 High
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
6.8 Medium
AI Score
Confidence
High
A vulnerability in the Layer 2 Ethernet services of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause the line card network processor to reset, resulting in a denial of service (DoS) condition.
This vulnerability is due to the incorrect handling of specific Ethernet frames that are received on line cards that have the Layer 2 services feature enabled. An attacker could exploit this vulnerability by sending specific Ethernet frames through an affected device. A successful exploit could allow the attacker to cause the ingress interface network processor to reset, resulting in a loss of traffic over the interfaces that are supported by the network processor. Multiple resets of the network processor would cause the line card to reset, resulting in a DoS condition.
[
{
"vendor": "Cisco",
"product": "Cisco IOS XR Software",
"versions": [
{
"status": "affected",
"version": "6.5.2"
},
{
"status": "affected",
"version": "6.5.3"
},
{
"status": "affected",
"version": "6.6.2"
},
{
"status": "affected",
"version": "6.6.3"
},
{
"status": "affected",
"version": "6.6.25"
},
{
"status": "affected",
"version": "7.0.1"
},
{
"status": "affected",
"version": "7.0.2"
},
{
"status": "affected",
"version": "7.1.1"
},
{
"status": "affected",
"version": "7.1.15"
},
{
"status": "affected",
"version": "7.1.2"
},
{
"status": "affected",
"version": "7.1.3"
},
{
"status": "affected",
"version": "6.7.1"
},
{
"status": "affected",
"version": "6.7.2"
},
{
"status": "affected",
"version": "6.7.3"
},
{
"status": "affected",
"version": "7.3.1"
},
{
"status": "affected",
"version": "7.3.2"
},
{
"status": "affected",
"version": "7.3.3"
},
{
"status": "affected",
"version": "7.3.5"
},
{
"status": "affected",
"version": "7.4.1"
},
{
"status": "affected",
"version": "7.4.2"
},
{
"status": "affected",
"version": "6.8.1"
},
{
"status": "affected",
"version": "6.8.2"
},
{
"status": "affected",
"version": "7.5.1"
},
{
"status": "affected",
"version": "7.5.3"
},
{
"status": "affected",
"version": "7.5.2"
},
{
"status": "affected",
"version": "7.5.4"
},
{
"status": "affected",
"version": "7.5.5"
},
{
"status": "affected",
"version": "7.6.1"
},
{
"status": "affected",
"version": "7.6.2"
},
{
"status": "affected",
"version": "7.7.1"
},
{
"status": "affected",
"version": "7.7.2"
},
{
"status": "affected",
"version": "6.9.1"
},
{
"status": "affected",
"version": "6.9.2"
},
{
"status": "affected",
"version": "7.8.1"
},
{
"status": "affected",
"version": "7.8.2"
},
{
"status": "affected",
"version": "7.9.1"
}
]
}
]