CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
41.7%
A vulnerability in the implementation of Border Gateway Protocol (BGP) functionality in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to incorrect processing of certain BGP update messages. An attacker could exploit this vulnerability by sending BGP update messages that include a specific, malformed attribute to be processed by an affected system. A successful exploit could allow the attacker to cause the BGP process to restart unexpectedly, resulting in a DoS condition. The Cisco implementation of BGP accepts incoming BGP traffic only from explicitly defined peers. To exploit this vulnerability, the malicious BGP update message would need to come from a configured, valid BGP peer, or would need to be injected by the attacker into the victim’s BGP network on an existing, valid TCP connection to a BGP peer.
Vendor | Product | Version | CPE |
---|---|---|---|
cisco | ios_xr | 6.0.1 | cpe:2.3:o:cisco:ios_xr:6.0.1:*:*:*:*:*:*:* |
cisco | ios_xr | 6.0.2 | cpe:2.3:o:cisco:ios_xr:6.0.2:*:*:*:*:*:*:* |
cisco | ios_xr | 6.1.1 | cpe:2.3:o:cisco:ios_xr:6.1.1:*:*:*:*:*:*:* |
cisco | ios_xr | 6.1.2 | cpe:2.3:o:cisco:ios_xr:6.1.2:*:*:*:*:*:*:* |
cisco | ios_xr | 6.1.3 | cpe:2.3:o:cisco:ios_xr:6.1.3:*:*:*:*:*:*:* |
cisco | ios_xr | 6.1.4 | cpe:2.3:o:cisco:ios_xr:6.1.4:*:*:*:*:*:*:* |
cisco | ios_xr | 6.2.1 | cpe:2.3:o:cisco:ios_xr:6.2.1:*:*:*:*:*:*:* |
cisco | ios_xr | 6.2.2 | cpe:2.3:o:cisco:ios_xr:6.2.2:*:*:*:*:*:*:* |
cisco | ios_xr | 6.2.3 | cpe:2.3:o:cisco:ios_xr:6.2.3:*:*:*:*:*:*:* |
cisco | ios_xr | 6.4.1 | cpe:2.3:o:cisco:ios_xr:6.4.1:*:*:*:*:*:*:* |
[
{
"product": "Cisco IOS XR Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
]
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
41.7%