CVE-2017-16227

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.

• CWE-20

• http://download.savannah.gnu.org/releases/quagga/quagga-1.2.2.changelog.txtIssue Tracking, Third Party Advisory
• http://www.debian.org/security/2017/dsa-4011Issue Tracking, Third Party Advisory
• https://bugs.debian.org/879474Issue Tracking, Patch, Third Party Advisory
• https://git.savannah.gnu.org/cgit/quagga.git/commit/?id=7a42b78be9a4108d98833069a88e6fddb9285008Issue Tracking, Patch, Third Party Advisory
• https://lists.quagga.net/pipermail/quagga-dev/2017-September/033284.htmlIssue Tracking, Patch, Third Party Advisory
• http://download.savannah.gnu.org/releases/quagga/quagga-1.2.2.changelog.txtIssue Tracking, Third Party Advisory
• http://www.debian.org/security/2017/dsa-4011Issue Tracking, Third Party Advisory
• https://bugs.debian.org/879474Issue Tracking, Patch, Third Party Advisory
• https://git.savannah.gnu.org/cgit/quagga.git/commit/?id=7a42b78be9a4108d98833069a88e6fddb9285008Issue Tracking, Patch, Third Party Advisory
• https://lists.quagga.net/pipermail/quagga-dev/2017-September/033284.htmlIssue Tracking, Patch, Third Party Advisory

Published

Oct 29, 2017

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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