Denial of Service Vulnerability in Quagga's aspath_put Function

CVE-2017-16227 · MEDIUM Severity

AV:N/AC:L/AU:N/C:N/I:N/A:P

The aspath_put function in bgpd/bgp_aspath.c in Quagga before 1.2.2 allows remote attackers to cause a denial of service (session drop) via BGP UPDATE messages, because AS_PATH size calculation for long paths counts certain bytes twice and consequently constructs an invalid message.

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