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TI-2019-04203 Aliases CVE-2019-5892GHSA-546m-4w73-87m7

bgpd in FRRouting FRR (aka Free Range Routing) 2.x and 3.x before 3.0.4, 4.x before…

Priority LOW 34CWE-436Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA.

Summary

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 the BGP session was closed.

Why it matters now

EPSS 0.02718 86th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:frrouting:frrouting:*:*:*:*:*:*:*:*2.0 – 2.0.2; 3.0 to before 3.0.4; 5.0 to before 5.0.2; 6.0 to before 6.0.2VulnerableFRRouting
cpe:2.3:a:frrouting:frrouting:4.0:*:*:*:*:*:*:*4.0VulnerableFRRouting
  • cpe:2.3:a:frrouting:frrouting:*:*:*:*:*:*:*:* Versions 2.0 – 2.0.2; 3.0 to before 3.0.4; 5.0 to before 5.0.2; 6.0 to before 6.0.2 Vulnerable ·FRRouting
  • cpe:2.3:a:frrouting:frrouting:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·FRRouting

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-5892
  2. 2026-10-03 Alias added: GHSA-546m-4w73-87m7

References

Patch 2

Advisory 5

  • TI-2023-20107 FRRouting FRR 7.5.1 through 9.0 and Pica8 PICOS 4.3.3.2 allow a remote attacker to cause… CVSS 3.1HIGH 7.5
  • TI-2023-21958 An issue was discovered in FRRouting FRR 9.0. CVSS 3.1CRITICAL 9.8
  • TI-2024-29658 An issue was discovered in FRRouting (FRR) through 10.1. CVSS 3.1CRITICAL 9.8
  • TI-2023-21957 An issue was discovered in FRRouting FRR through 9.0. CVSS 3.1CRITICAL 9.1
  • TI-2023-19790 bgpd/bgp_flowspec.c in FRRouting (FRR) before 8.4.3 mishandles an nlri length of zero, aka a "flowspec overflow." CVSS 3.1CRITICAL 9.8
  • TI-2022-17234 An out-of-bounds read in the BGP daemon of FRRouting FRR before 8.4 may lead to a… CVSS 3.1CRITICAL 9.1
See all 47 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences