Description
Cisco IOS XR 3.4.0 through 3.8.1 allows remote attackers to cause a denial of service (session reset) via a BGP UPDATE message with an invalid attribute, as demonstrated in the wild on 17 August 2009.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected products
- Cisco / ios_xr3.4 – 3.4
- Cisco / ios_xr3.4.0 – 3.4.0
- Cisco / ios_xr3.4.1 – 3.4.1
- Cisco / ios_xr3.4.2 – 3.4.2
- Cisco / ios_xr3.4.3 – 3.4.3
- Cisco / ios_xr3.5 – 3.5
- Cisco / ios_xr3.5.2 – 3.5.2
- Cisco / ios_xr3.5.3 – 3.5.3
- Cisco / ios_xr3.5.4 – 3.5.4
- Cisco / ios_xr3.6.0 – 3.6.0
- Cisco / ios_xr3.6.1 – 3.6.1
- Cisco / ios_xr3.6.2 – 3.6.2
- Cisco / ios_xr3.6.3 – 3.6.3
- Cisco / ios_xr3.7.0 – 3.7.0
- Cisco / ios_xr3.7.1 – 3.7.1
- Cisco / ios_xr3.7.2 – 3.7.2
- Cisco / ios_xr3.7.3 – 3.7.3
- Cisco / ios_xr3.8.0 – 3.8.0
- Cisco / ios_xr3.8.1 – 3.8.1