CVE-2010-3035
CVE-2010-3035
In short
Cisco IOS XR with BGP enabled crashes when it receives a specially crafted network announcement with an unrecognized attribute, causing the router to disconnect from its peers. This vulnerability was actively exploited in 2010.
Technical detail
A remote attacker can send a crafted BGP prefix announcement containing an unrecognized transitive attribute (e.g., type code 99) to a vulnerable IOS XR device, triggering improper handling that causes a peering reset. No authentication is required; the attack occurs during normal BGP session operation. Impact is denial of service through routing instability and loss of connectivity.
Summary generated and translated by AI from the official 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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
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Talk to TrueHacking →References
http://mailman.nanog.org/pipermail/nanog/2010-August/024837.htmlhttp://osvdb.org/67696http://secunia.com/advisories/41190https://exchange.xforce.ibmcloud.com/vulnerabilities/61443https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2010-3035http://www.cisco.com/en/US/products/products_security_advisory09186a0080b4411f.shtmlhttp://www.securitytracker.com/id?1024371http://www.vupen.com/english/advisories/2010/2227