CVE-2019-5892
FRRouting bgp denial of service vulnerability
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 the BGP session was closed.
INFO
Published Date :
Jan. 10, 2019, 5:29 p.m.
Last Modified :
Nov. 21, 2024, 4:45 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2019-5892.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2019-5892 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-5892 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CWE Remap by [email protected]
Aug. 24, 2020
Action Type Old Value New Value Changed CWE CWE-20 CWE-436 -
Initial Analysis by [email protected]
Feb. 15, 2019
Action Type Old Value New Value Added CVSS V2 (AV:N/AC:L/Au:S/C:N/I:N/A:P) Added CVSS V3 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://frrouting.org/community/security/cve-2019-5892.html No Types Assigned https://frrouting.org/community/security/cve-2019-5892.html Vendor Advisory Changed Reference Type https://github.com/FRRouting/frr/commit/943d595a018e69b550db08cccba1d0778a86705a No Types Assigned https://github.com/FRRouting/frr/commit/943d595a018e69b550db08cccba1d0778a86705a Patch, Third Party Advisory Changed Reference Type https://github.com/FRRouting/frr/releases/tag/frr-3.0.4 No Types Assigned https://github.com/FRRouting/frr/releases/tag/frr-3.0.4 Release Notes, Third Party Advisory Changed Reference Type https://github.com/FRRouting/frr/releases/tag/frr-4.0.1 No Types Assigned https://github.com/FRRouting/frr/releases/tag/frr-4.0.1 Release Notes, Third Party Advisory Changed Reference Type https://github.com/FRRouting/frr/releases/tag/frr-5.0.2 No Types Assigned https://github.com/FRRouting/frr/releases/tag/frr-5.0.2 Release Notes, Third Party Advisory Changed Reference Type https://github.com/FRRouting/frr/releases/tag/frr-6.0.2 No Types Assigned https://github.com/FRRouting/frr/releases/tag/frr-6.0.2 Release Notes, Third Party Advisory Changed Reference Type https://lists.frrouting.org/pipermail/frog/2019-January/000404.html No Types Assigned https://lists.frrouting.org/pipermail/frog/2019-January/000404.html Patch, Vendor Advisory Added CWE CWE-20 Added CPE Configuration OR *cpe:2.3:a:frrouting:frrouting:*:*:*:*:*:*:*:* versions from (including) 2.0 up to (including) 2.0.2 *cpe:2.3:a:frrouting:frrouting:*:*:*:*:*:*:*:* versions from (including) 3.0 up to (excluding) 3.0.4 *cpe:2.3:a:frrouting:frrouting:4.0:*:*:*:*:*:*:* *cpe:2.3:a:frrouting:frrouting:*:*:*:*:*:*:*:* versions from (including) 5.0 up to (excluding) 5.0.2 *cpe:2.3:a:frrouting:frrouting:*:*:*:*:*:*:*:* versions from (including) 6.0 up to (excluding) 6.0.2 -
CVE Modified by [email protected]
Jan. 11, 2019
Action Type Old Value New Value Added Reference https://frrouting.org/community/security/cve-2019-5892.html [No Types Assigned] -
CVE Modified by [email protected]
Jan. 10, 2019
Action Type Old Value New Value Changed 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, as used in Cumulus Linux through 3.7.x and other products, 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. 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.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-5892 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2019-5892
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.95 }} 0.14%
score
0.83212
percentile