Description
In Eclipse Mosquitto version 2.0.0 to 2.0.9, if an authenticated client that had connected with MQTT v5 sent a crafted CONNACK message to the broker, a NULL pointer dereference would occur.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| The Eclipse Foundation | Eclipse Mosquitto | 2.0 – < unspecified, unspecified – ≤ 2.0.9 | unspecified |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | mosquitto | 2.0.10-1 | — |
| Debian 13 | mosquitto | 2.0.10-1 | — |
| Debian 12 | mosquitto | 2.0.10-1 | — |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | mosquitto | 2.0.10-r0 | — |
| Alpine v3.23 | mosquitto | 2.0.10-r0 | — |
| Alpine v3.22 | mosquitto | 2.0.10-r0 | — |
| Alpine v3.21 | mosquitto | 2.0.10-r0 | — |
| Alpine v3.20 | mosquitto | 2.0.10-r0 | — |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | mosquitto | 2.0.10-r0 | — |
| Alpine v3.18 | mosquitto | 2.0.10-r0 | — |
| Alpine v3.17 | mosquitto | 2.0.10-r0 | — |
| Alpine v3.16 | mosquitto | 2.0.10-r0 | — |
| Alpine v3.15 | mosquitto | 2.0.10-r0 | — |
| Alpine v3.14 | mosquitto | 2.0.10-r0 | — |