CVE-2018-5381
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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 30.2%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
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.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 30.16% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-228, CWE-835
- Affected
- quagga/quagga · canonical/ubuntu linux · debian/debian linux · siemens/ruggedcom rox ii firmware
- Source
- cret@cert.org
EPSS 30.2% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://savannah.nongnu.org/forum/forum.php?forum_id=9095Third Party Advisory
- http://www.kb.cert.org/vuls/id/940439Third Party Advisory, US Government Resource
- https://cert-portal.siemens.com/productcert/pdf/ssa-451142.pdfMitigation, Third Party Advisory
- https://gogs.quagga.net/Quagga/quagga/src/master/doc/security/Quagga-2018-1975.txtVendor Advisory
- https://lists.debian.org/debian-lts-announce/2018/02/msg00021.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/201804-17Third Party Advisory
- https://usn.ubuntu.com/3573-1/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4115Third Party Advisory
- http://savannah.nongnu.org/forum/forum.php?forum_id=9095Third Party Advisory
- http://www.kb.cert.org/vuls/id/940439Third Party Advisory, US Government Resource
- https://cert-portal.siemens.com/productcert/pdf/ssa-451142.pdfMitigation, Third Party Advisory
- https://gogs.quagga.net/Quagga/quagga/src/master/doc/security/Quagga-2018-1975.txtVendor Advisory
- https://lists.debian.org/debian-lts-announce/2018/02/msg00021.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/201804-17Third Party Advisory
- https://usn.ubuntu.com/3573-1/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4115Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.