CVE-2019-5892 — Interpretation Conflict in Frrouting

CWE-436 — Interpretation Conflict3 documents3 sources
Severity
6.5MEDIUMNVD
EPSS
3.6%
top 12.20%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
FrroutingDebian FRR
Timeline
PublishedJan 10
Latest updateMay 13

Description

bgpd in FRRouting FRR (aka Free Range Routing) 2.x and 3.x before 3.0.4, 4.x before 4.0.1, 5.x before 5.0.2, and 6.x before 6.0.2 (not affecting Cumulus Linux or VyOS), when ENABLE_BGP_VNC is used for Virtual Network Control, allows remote attackers to cause a denial of service (peering session flap) via attribute 255 in a BGP UPDATE packet. This occurred during Disco in January 2019 because FRR does not implement RFC 7606, and therefore the packets with 255 were considered invalid VNC data and …

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 2.8 | Impact: 3.6

Affected Packages2 packages

▶NVDfrrouting/frrouting3.0 — 3.0.4+4
▶debiandebian/frr

Patches

Patch: github.com ↗Patch: lists.frrouting.org ↗Patch: github.com ↗

🔴Vulnerability Details

1
GHSA
GHSA-546m-4w73-87m7: bgpd in FRRouting FRR (aka Free Range Routing) 2↗2022-05-13
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📋Vendor Advisories

1
Debian
CVE-2019-5892: frr - bgpd in FRRouting FRR (aka Free Range Routing) 2.x and 3.x before 3.0.4, 4.x bef...↗2019
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