#VU99568 Memory leak in Eclipse Mosquitto - CVE-2024-8376

Vulnerability identifier: #VU99568

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-8376

CWE-ID: CWE-401

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Eclipse Mosquitto
Server applications / Other server solutions

Vendor: Eclipse

Description
The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak. A remote attacker can send a specific sequences of "CONNECT", "DISCONNECT", "SUBSCRIBE", "UNSUBSCRIBE" and "PUBLISH" packets to force the application to leak memory and perform denial of service attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Eclipse Mosquitto: 2.0.0 - 2.0.18

---

External links
https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/216
https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/217
https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/218
https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/227
https://gitlab.eclipse.org/security/cve-assignement/-/issues/26
https://github.com/eclipse/mosquitto/releases/tag/v2.0.19
https://github.com/eclipse-mosquitto/mosquitto/commit/1914b3ee2a18102d0a94cbdbbfeae1afa03edd17

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.