#VU79823 Uncaught Exception in Fast DDS - CVE-2023-39948

Vulnerability identifier: #VU79823

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-2023-39948

CWE-ID: CWE-248

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Fast DDS
Server applications / Other server solutions

Vendor: eProsima

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to an uncaught exception when handling data submessage. A remote attacker can send specially crafted data to the system and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Fast DDS: 2.0.0 - 2.0.3, 2.1.0 - 2.1.4, 2.2.0 - 2.2.1, 2.3.0 - 2.3.6, 2.4.0 - 2.4.2, 2.5.0 - 2.5.2, 2.6.0 - 2.6.4, 2.7.0 - 2.7.2, 2.8.0 - 2.8.2, 2.9.0 - 2.9.1

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External links
https://github.com/eProsima/Fast-DDS/files/11117197/fastdds-assert.pcap.zip
https://github.com/eProsima/Fast-DDS/issues/3422
https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-x9pj-vrgf-f68f
https://www.debian.org/security/2023/dsa-5481

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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.