Published: 19/08/2009 Updated: 21/08/2009

CVSS v2 Base Score: 4.3 | Impact Score: 2.9 | Exploitability Score: 8.6

VMScore: 384

Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P

Cisco IOS XR 3.4.0 up to and including 3.8.1 allows remote malicious users 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.

Vulnerable Product	Search on Vulmon	Subscribe to Product
cisco ios xr 3.4
cisco ios xr 3.4.0
cisco ios xr 3.4.1
cisco ios xr 3.7.3
cisco ios xr 3.8.1
cisco ios xr 3.8.0
cisco ios xr 3.4.3
cisco ios xr 3.5.3
cisco ios xr 3.6.2
cisco ios xr 3.7.0
cisco ios xr 3.7.2
cisco ios xr 3.5.2
cisco ios xr 3.5.4
cisco ios xr 3.6.0
cisco ios xr 3.6.1
cisco ios xr 3.4.2
cisco ios xr 3.5
cisco ios xr 3.6.3
cisco ios xr 3.7.1

Cisco IOS XR Software contains multiple vulnerabilities in the Border Gateway Protocol (BGP) feature These vulnerabilities include: Cisco IOS XR Software will reset a BGP peering session when receiving a specific invalid BGP update The vulnerability manifests when a BGP peer announces a prefix with a specific invalid attribute ...

CWE-20 http://mailman.nanog.org/pipermail/nanog/2009-August/012719.html http://www.cisco.com/en/US/products/products_security_advisory09186a0080af150f.shtml http://securitytracker.com/id?1022739 https://nvd.nist.gov http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20090818-bgp

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