The Quagga BGP daemon (bgpd) prior to version 1.2.3 has a bug in its parsing of "Capabilities" in BGP OPEN messages, in the bgp_packet.c:bgp_capability_msg_parse function. The parser can enter an infinite loop on invalid capabilities if a Multi-Protocol capability does not have a recognized AFI/SAFI, causing a denial of service.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux | — | Upgrade quagga | Feb 22, 2018 | Feb 19, 2018 |
| Debian | — | Upgrade quagga | Feb 19, 2019 | Feb 19, 2018 |
| Freebsd | — | Upgrade quagga | Dec 10, 2025 | Feb 15, 2018 |
| Gentoo Linux | — | Upgrade net-misc/quagga. | Apr 23, 2018 | Feb 19, 2018 |
| Huawei Euleros 2_0_sp2 | — | Upgrade quagga | Dec 4, 2019 | Feb 19, 2018 |
| Huawei Euleros 2_0_sp3 | — | Upgrade quagga | Dec 18, 2019 | Feb 19, 2018 |
| Huawei Euleros 2_0_sp5 | — | Upgrade quagga | Nov 19, 2019 | Feb 19, 2018 |
| Oracle Solaris | — | Upgrade system/network/routing/quagga to version 0.99.19-0.175.3.31.0.3.0 on Solaris 11.3 | Apr 18, 2018 | Feb 19, 2018 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Feb 19, 2018 |
| Suse | — | Upgrade quagga-develUpgrade libquagga_pb0Upgrade libzebra1Upgrade libospf0Upgrade libfpm_pb0Upgrade libospfapiclient0Upgrade quagga | Mar 2, 2020 | Feb 16, 2018 |
| Ubuntu | — | Upgrade quagga-bgpdUpgrade quagga | Apr 25, 2018 | Feb 16, 2018 |
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