USN-6492-1

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/notices/USN-6492-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6492-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-6492-1
Upstream
Related
Published
2023-11-21T15:23:51.936272Z
Modified
2025-10-13T04:36:41Z
Summary
mosquitto vulnerabilities
Details

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)

References

Affected packages

Ubuntu:Pro:20.04:LTS / mosquitto

Package

Name
mosquitto
Purl
pkg:deb/ubuntu/mosquitto@1.6.9-1ubuntu0.1~esm1?arch=source&distro=esm-apps/focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.6.9-1ubuntu0.1~esm1

Affected versions

1.*

1.6.6-1
1.6.7-1
1.6.8-1
1.6.8-2
1.6.9-1~build1
1.6.9-1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "libmosquitto-dev",
            "binary_version": "1.6.9-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libmosquitto1",
            "binary_version": "1.6.9-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libmosquittopp-dev",
            "binary_version": "1.6.9-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libmosquittopp1",
            "binary_version": "1.6.9-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "mosquitto",
            "binary_version": "1.6.9-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "mosquitto-clients",
            "binary_version": "1.6.9-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "mosquitto-dev",
            "binary_version": "1.6.9-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2021-34431"
        },
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2021-41039"
        },
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2023-0809"
        },
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2023-3592"
        }
    ],
    "ecosystem": "Ubuntu:Pro:20.04:LTS"
}

Ubuntu:22.04:LTS / mosquitto

Package

Name
mosquitto
Purl
pkg:deb/ubuntu/mosquitto@2.0.11-1ubuntu1.1?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.0.11-1ubuntu1.1

Affected versions

2.*

2.0.11-1
2.0.11-1build1
2.0.11-1ubuntu1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libmosquitto-dev",
            "binary_version": "2.0.11-1ubuntu1.1"
        },
        {
            "binary_name": "libmosquitto1",
            "binary_version": "2.0.11-1ubuntu1.1"
        },
        {
            "binary_name": "libmosquittopp-dev",
            "binary_version": "2.0.11-1ubuntu1.1"
        },
        {
            "binary_name": "libmosquittopp1",
            "binary_version": "2.0.11-1ubuntu1.1"
        },
        {
            "binary_name": "mosquitto",
            "binary_version": "2.0.11-1ubuntu1.1"
        },
        {
            "binary_name": "mosquitto-clients",
            "binary_version": "2.0.11-1ubuntu1.1"
        },
        {
            "binary_name": "mosquitto-dev",
            "binary_version": "2.0.11-1ubuntu1.1"
        }
    ]
}

Database specific

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2021-34434"
        },
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2021-41039"
        },
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2023-0809"
        },
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2023-3592"
        },
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2023-28366"
        }
    ],
    "ecosystem": "Ubuntu:22.04:LTS"
}