7.5

CVE-2019-9749: treasuredata fluent_bit

CVSS: 7.5v3.1HighModified
Published 13-03-2019Last modified 16-09-2024
Open JSON

Vulnerability summary

CVE-2019-9749 is a high (CVSS 7.5) vulnerability in treasuredata fluent_bit. EPSS estimates a 1.66% chance of exploitation in the next 30 days, higher than 76.4% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
40/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
1.66%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Timeline

  1. 13-03-2019
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

Description

An issue was discovered in the MQTT input plugin in Fluent Bit through 1.0.4. When this plugin acts as an MQTT broker (server), it mishandles incoming network messages. After processing a crafted packet, the plugin's mqtt_packet_drop function (in /plugins/in_mqtt/mqtt_prot.c) executes the memmove() function with a negative size parameter. That leads to a crash of the whole Fluent Bit server via a SIGSEGV signal.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.66%

Chance of exploitation in the next 30 days

Percentile

76%

Versus all other CVEs

30-day change

0.00 pp

From 1.66% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.66%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Fluent Bit

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Treasuredata1 product

1 vendor · 1 product

References

1 links