Vulnerability Monitor

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CVE-2018-5381

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.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 6.5, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction requiring only low-level privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 5 products from quagga, from canonical, from debian and 2 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2018, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2018-02-19T13:29:00.583

Last Modified

2024-11-21T04:08:42.307

Status

Modified

Source

[email protected]

Severity

CVSSv3.0: 6.5 (MEDIUM)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Secondary
CWE-228
Type: Primary
CWE-835

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	quagga	quagga	≤ 1.2.2	Yes
Operating System	canonical	ubuntu_linux	14.04	Yes
Operating System	canonical	ubuntu_linux	16.04	Yes
Operating System	canonical	ubuntu_linux	17.10	Yes
Operating System	debian	debian_linux	7.0	Yes
Operating System	debian	debian_linux	8.0	Yes
Operating System	debian	debian_linux	9.0	Yes
Operating System	siemens	ruggedcom_rox_ii_firmware	< 2.13.0	Yes
Hardware	siemens	ruggedcom_rox_ii	-	No

References

http://savannah.nongnu.org/forum/forum.php?forum_id=9095 Third Party Advisory ([email protected])
http://www.kb.cert.org/vuls/id/940439 Third Party Advisory, US Government Resource ([email protected])
https://cert-portal.siemens.com/productcert/pdf/ssa-451142.pdf Mitigation, Third Party Advisory ([email protected])
https://gogs.quagga.net/Quagga/quagga/src/master/doc/security/Quagga-2018-1975.txt Vendor Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2018/02/msg00021.html Mailing List, Third Party Advisory ([email protected])
https://security.gentoo.org/glsa/201804-17 Third Party Advisory ([email protected])
https://usn.ubuntu.com/3573-1/ Third Party Advisory ([email protected])
https://www.debian.org/security/2018/dsa-4115 Third Party Advisory ([email protected])
http://savannah.nongnu.org/forum/forum.php?forum_id=9095 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.kb.cert.org/vuls/id/940439 Third Party Advisory, US Government Resource (af854a3a-2127-422b-91ae-364da2661108)
https://cert-portal.siemens.com/productcert/pdf/ssa-451142.pdf Mitigation, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://gogs.quagga.net/Quagga/quagga/src/master/doc/security/Quagga-2018-1975.txt Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2018/02/msg00021.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/201804-17 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://usn.ubuntu.com/3573-1/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2018/dsa-4115 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For quagga's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.