CVE-2023-5632

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Source
https://nvd.nist.gov/vuln/detail/CVE-2023-5632
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-5632.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2023-5632
Downstream
Published
2023-10-18T09:15:10Z
Modified
2025-09-16T07:33:57.001256Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

In Eclipse Mosquito before and including 2.0.5, establishing a connection to the mosquitto server without sending data causes the EPOLLOUT event to be added, which results excessive CPU consumption. This could be used by a malicious actor to perform denial of service type attack. This issue is fixed in 2.0.6

References

Affected packages

Debian:11 / mosquitto

Package

Name
mosquitto
Purl
pkg:deb/debian/mosquitto?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.0.7-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / mosquitto

Package

Name
mosquitto
Purl
pkg:deb/debian/mosquitto?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.0.7-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / mosquitto

Package

Name
mosquitto
Purl
pkg:deb/debian/mosquitto?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.0.7-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / mosquitto

Package

Name
mosquitto
Purl
pkg:deb/debian/mosquitto?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.0.7-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Git / github.com/eclipse-mosquitto/mosquitto

Affected ranges

Type
GIT
Repo
https://github.com/eclipse-mosquitto/mosquitto
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
18bad1ff32435e523d7507e9b2ce0010124a8f2d
Type
GIT
Repo
https://github.com/eclipse/mosquitto
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
c55424e8979c1fbc4a0a893f61f5b8f7e217f49d

Affected versions

v1.*

v1.4
v1.4.1
v1.4.10
v1.4.11
v1.4.12
v1.4.13
v1.4.14
v1.4.15
v1.4.2
v1.4.3
v1.4.4
v1.4.5
v1.4.6
v1.4.7
v1.4.8
v1.4.9
v1.5
v1.5.1
v1.5.2
v1.5.3
v1.5.4
v1.5.5
v1.5.7
v1.5.8
v1.6
v1.6.1
v1.6.10
v1.6.11
v1.6.12
v1.6.2
v1.6.3
v1.6.4
v1.6.5
v1.6.6
v1.6.7
v1.6.8
v1.6.9

v2.*

v2.0.0
v2.0.1
v2.0.2
v2.0.3
v2.0.4
v2.0.5

Database specific 

{
    "vanir_signatures": [
        {
            "id": "CVE-2023-5632-2ab895b3",
            "deprecated": false,
            "signature_type": "Line",
            "signature_version": "v1",
            "target": {
                "file": "lib/packet_mosq.c"
            },
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
                    "339340532613465271204693980858278238153",
                    "136292289744382020139876670180840970972",
                    "21869194843853891625861881781520145664",
                    "285141719073239596503475120037193743720"
                ]
            },
            "source": "https://github.com/eclipse-mosquitto/mosquitto/commit/18bad1ff32435e523d7507e9b2ce0010124a8f2d"
        },
        {
            "id": "CVE-2023-5632-580bb959",
            "deprecated": false,
            "signature_type": "Function",
            "signature_version": "v1",
            "target": {
                "file": "lib/packet_mosq.c",
                "function": "packet__write"
            },
            "digest": {
                "length": 3121.0,
                "function_hash": "68487489615421562917012134159900078294"
            },
            "source": "https://github.com/eclipse-mosquitto/mosquitto/commit/18bad1ff32435e523d7507e9b2ce0010124a8f2d"
        }
    ]
}