CVE-2019-5892
First published: Thu Jan 10 2019(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Frrouting Frrouting | >=2.0<=2.0.2 | |
| Frrouting Frrouting | >=3.0<3.0.4 | |
| Frrouting Frrouting | >=5.0<5.0.2 | |
| Frrouting Frrouting | >=6.0<6.0.2 | |
| Frrouting Frrouting | =4.0 | |
| >=2.0<=2.0.2 | ||
| >=3.0<3.0.4 | ||
| >=5.0<5.0.2 | ||
| >=6.0<6.0.2 | ||
| =4.0 |
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Reference Links
- https://frrouting.org/community/security/cve-2019-5892.html
- https://github.com/FRRouting/frr/commit/943d595a018e69b550db08cccba1d0778a86705a
- https://github.com/FRRouting/frr/releases/tag/frr-3.0.4
- https://github.com/FRRouting/frr/releases/tag/frr-4.0.1
- https://github.com/FRRouting/frr/releases/tag/frr-5.0.2
- https://github.com/FRRouting/frr/releases/tag/frr-6.0.2
- https://lists.frrouting.org/pipermail/frog/2019-January/000404.html
Frequently Asked Questions
What is CVE-2019-5892?
CVE-2019-5892 is a vulnerability in bgpd in FRRouting (aka Free Range Routing) that allows remote attackers to cause a denial of service.
Which versions of FRRouting are affected by CVE-2019-5892?
FRRouting 2.x, 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) are affected.
How does CVE-2019-5892 affect Cumulus Linux and VyOS?
CVE-2019-5892 does not affect Cumulus Linux or VyOS.
What is the severity of CVE-2019-5892?
CVE-2019-5892 has a severity score of 6.5 (medium).
How can I fix CVE-2019-5892?
To fix CVE-2019-5892, update FRRouting to version 3.0.4, 4.0.1, 5.0.2, or 6.0.2.
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- agent/type
- agent/remedy
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/references
- agent/weakness
- agent/description
- agent/first-publish-date
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- agent/author
- agent/last-modified-date
- agent/softwarecombine
- agent/tags
- agent/event
- vendor/frrouting
- canonical/frrouting frrouting
- version/frrouting frrouting/2.0
- version/frrouting frrouting/2.0.2
- version/frrouting frrouting/3.0
- version/frrouting frrouting/5.0
- version/frrouting frrouting/6.0
- version/frrouting frrouting/4.0