openEuler 22.03 LTS update for mosquitto

1) Memory leak

EUVDB-ID: #VU79936

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-28366

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

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

The vulnerability exists due memory leak in broker. A remote client can send multiple QoS 2 messages with the same message ID, but then never respond to the PUBREC commands, which results in memory leak and denial of service condition.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 22.03 LTS

mosquitto-debuginfo: before 2.0.16-1

mosquitto-debugsource: before 2.0.16-1

mosquitto-devel: before 2.0.16-1

mosquitto: before 2.0.16-1

CPE2.3

• cpe:2.3:o:openeuler:openeuler:22.03:LTS:*:*:*:*:*:*
• cpe:2.3:o:openeuler:mosquitto-debuginfo:*:*:*:*:*:openeuler:*:*
• cpe:2.3:o:openeuler:mosquitto-debugsource:*:*:*:*:*:openeuler:*:*
• cpe:2.3:o:openeuler:mosquitto-devel:*:*:*:*:*:openeuler:*:*
• cpe:2.3:o:openeuler:mosquitto:*:*:*:*:*:openeuler:*:*

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1680

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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