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OpenAdvisories
High USN-6492-1 6 CVEs

mosquitto vulnerabilities

Published Nov 21, 2023 · Updated Apr 22, 2026

Summary

Kathrin Kleinhammer discovered that Mosquitto incorrectly handled certain
inputs. If a user or an automated system were provided with a specially crafted
input, a remote attacker could possibly use this issue to cause a denial of
service. This issue only affected Ubuntu 20.04 LTS. (CVE-2021-34431)

Zhanxiang Song discovered that Mosquitto incorrectly handled certain inputs. If
a user or an automated system were provided with a specially crafted input, a
remote attacker could possibly use this issue to cause an authorisation bypass.
This issue only affected Ubuntu 22.04 LTS and Ubuntu 23.04. (CVE-2021-34434)

Zhanxiang Song, Bin Yuan, DeQing Zou, and Hai Jin discovered that Mosquitto
incorrectly handled certain inputs. If a user or an automated system were
provided with a specially crafted input, a remote attacker could possibly use
this issue to cause a denial of service. This issue only affected Ubuntu 20.04
LTS and Ubuntu 22.04 LTS. (CVE-2021-41039)

Zhengjie Du discovered that Mosquitto incorrectly handled certain inputs. If a
user or an automated system were provided with a specially crafted input file,
a remote attacker could possibly use this issue to cause a denial of service.
(CVE-2023-0809)

It was discovered that Mosquitto incorrectly handled certain inputs. If a user
or an automated system were provided with a specially crafted input, a remote
attacker could possibly use this issue to cause a denial of service.
(CVE-2023-3592)

Mischa Bachmann discovered that Mosquitto incorrectly handled certain inputs.
If a user or an automated system were provided with a specially crafted input,
a remote attacker could possibly use this issue to cause a denial of service.
This issue was only fixed in Ubuntu 22.04 LTS and Ubuntu 23.04.
(CVE-2023-28366)

Fixed packages 2

ReleasePackageFixed in
Ubuntu · 22.04 LTS 22.04:LTS mosquitto 2.0.11-1ubuntu1.1
Ubuntu · Pro 20.04 LTS Pro:20.04:LTS mosquitto 1.6.9-1ubuntu0.1~esm1

Vulnerabilities 6

References

  • report
    https://ubuntu.com/security/CVE-2021-34431
  • report
    https://ubuntu.com/security/CVE-2021-34434
  • report
    https://ubuntu.com/security/CVE-2021-41039
  • report
    https://ubuntu.com/security/CVE-2023-0809
  • report
    https://ubuntu.com/security/CVE-2023-3592
  • report
    https://ubuntu.com/security/CVE-2023-28366