CVE-2018-5381
MEDIUM severity · CVSS 6.5 · CWE-228
6.5CVSS MEDIUM
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)30%
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://gogs.quagga.net/Quagga/quagga/src/master/doc/security/Quagga-2018-1975.txtAdvisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-451142.pdfAdvisory
- http://savannah.nongnu.org/forum/forum.php?forum_id=9095Advisory
- http://www.kb.cert.org/vuls/id/940439Advisory
- https://lists.debian.org/debian-lts-announce/2018/02/msg00021.htmlAdvisory
- https://security.gentoo.org/glsa/201804-17Advisory
- https://usn.ubuntu.com/3573-1/Advisory
- https://www.debian.org/security/2018/dsa-4115Advisory