CVE-2021-45938
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2021-45938
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-45938.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2021-45938
- Published
- 2022-01-01T01:15:08Z
- Modified
- 2025-10-15T13:29:44.703995Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
wolfSSL wolfMQTT 1.9 has a heap-based buffer overflow in MqttClientDecodePacket (called from MqttClientWaitType and MqttClient_Unsubscribe).
- References
Affected packages
Git / github.com/wolfssl/wolfmqtt
Affected ranges
- Type
- GIT
- Repo
- https://github.com/wolfssl/wolfmqtt
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
Affected versions
v0.*
v0.10
v0.11
v0.12
v0.13
v0.14
v0.2
v0.2-dist
v0.3
v0.4
v0.5
v0.6
v0.8
v0.9
v1.*
v1.0
v1.1.0
v1.2
v1.3.0
v1.4
v1.6
v1.7
v1.8
v1.9
Database specific
vanir_signatures
[
{
"digest": {
"threshold": 0.9,
"line_hashes": [
"280277640168772996348933106240497287098",
"120079499844175725862248008020683433689",
"47346730709629407828913387344300580063",
"79204163782737757014109719066411078623",
"120803118586187991233588399328252326413"
]
},
"source": "https://github.com/wolfssl/wolfmqtt/commit/84d4b53122e0fa0280c7872350b89d5777dabbb2",
"deprecated": false,
"signature_version": "v1",
"target": {
"file": "src/mqtt_client.c"
},
"id": "CVE-2021-45938-3c4f0149",
"signature_type": "Line"
},
{
"digest": {
"function_hash": "329802369575170683440296892229791015484",
"length": 3755.0
},
"source": "https://github.com/wolfssl/wolfmqtt/commit/84d4b53122e0fa0280c7872350b89d5777dabbb2",
"deprecated": false,
"signature_version": "v1",
"target": {
"file": "src/mqtt_client.c",
"function": "MqttClient_WaitType"
},
"id": "CVE-2021-45938-7e8fea99",
"signature_type": "Function"
}
]