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CVE-2018-5379

51
FAUCET Score

CVE-2018-5379 is a critical double-free vulnerability affecting the Quagga BGP daemon (bgpd) prior to version 1.2.3, as well as various distributions like Debian, Red Hat, and Ubuntu. This flaw, rated 9.8 Critical, allows an unauthenticated attacker to remotely trigger a denial of service or potentially execute arbitrary code by sending specially crafted BGP UPDATE messages. While no public exploit code (Metasploit, Nuclei, ExploitDB) is available and it's not listed in CISA's KEV catalog, the vulnerability has garnered some community discussion and media coverage, indicating awareness within the cybersecurity landscape.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.2.2CPE matchmatch criteria
cpe:2.3:a:quagga:quagga:*:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.6
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
39.05%
Probability of exploitation in next 30 days
EPSS Percentile
98.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.3905 is in the 96th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: quagga-0:0.99.22.4-5.el7_4
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: quagga
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: quagga

Vendor Advisories (1)

redhatCVE-2018-5379Important

quagga: Double free vulnerability in bgpd when processing certain forms of UPDATE message allowing to crash or potentially execute arbitrary code

Feb 15, 2018

References

access.redhat.com / errata/RHSA-2018:0377
Third Party Advisory
savannah.nongnu.org / forum/forum.php
Third Party Advisory
cert-portal.siemens.com / productcert/pdf/ssa-451142.pdf
Third Party Advisory
gogs.quagga.net / Quagga/quagga/src/master/doc/security/Quagga-2018-1114.txt
Vendor Advisory
lists.debian.org / debian-lts-announce/2018/02/msg00021.html
Mailing ListThird Party Advisory
security.gentoo.org / glsa/201804-17
Third Party Advisory
usn.ubuntu.com / 3573-1
Third Party Advisory
debian.org / security/2018/dsa-4115
Third Party Advisory
kb.cert.org / vuls/id/940439
Third Party AdvisoryUS Government Resource
securityfocus.com / bid/103105
Third Party AdvisoryVDB Entry