CVE-2019-9749 is a denial-of-service vulnerability affecting Fluent Bit versions through 1.0.4, specifically within its MQTT input plugin when configured as an MQTT broker. An unauthenticated attacker can crash the Fluent Bit server by sending a crafted network message, leading to a negative size parameter in a memmove() function call. This vulnerability has a CVSS v3.1 score of 7.5 (HIGH), indicating it is easily exploitable over the network with no user interaction, resulting in high availability impact. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 1.0.4CPE matchmatch criteria | cpe:2.3:a:treasuredata:fluent_bit:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
No social media mentions found for this CVE.
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.