Description
Cisco IOS XR 3.4.0 through 3.9.1, when BGP is enabled, does not properly handle unrecognized transitive attributes, which allows remote attackers to cause a denial of service (peering reset) via a crafted prefix announcement, as demonstrated in the wild in August 2010 with attribute type code 99, aka Bug ID CSCti62211.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected products
- Cisco / ios_xr3.4.0 – 3.9.1
References
- MISChttps://exchange.xforce.ibmcloud.com/vulnerabilities/61443
- MISChttp://www.securitytracker.com/id?1024371
- VENDOR_ADVISORYhttp://www.cisco.com/en/US/products/products_security_advisory09186a0080b4411f.shtml
- MAILING_LISThttp://mailman.nanog.org/pipermail/nanog/2010-August/024837.html
- VENDOR_ADVISORYhttp://secunia.com/advisories/41190
- VENDOR_ADVISORYhttp://www.vupen.com/english/advisories/2010/2227
- MISChttp://osvdb.org/67696