Vulnerability · Published Aug 11, 2023 · Assigned by GitHub_M

CVE-2023-39945Malformed serialized data in a data submessage leads to unhandled exception

High 8.2

In plain English

A high-severity security flaw in Fast-DDS from eProsima. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 61% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.2High

Exploit odds (30 days)0.9%top 38.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.11.0, 2.10.2, 2.9.2, and 2.6.5, a data submessage sent to PDP port raises unhandled `BadParamException` in fastcdr, which in turn crashes fastdds. Versions 2.11.0, 2.10.2, 2.9.2, and 2.6.5 contain a patch for this issue.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	fastdds	2.9.1+ds-1+deb12u1	DEBIAN-CVE-2023-39945
Debian:12	fastdds	2.9.1+ds-1+deb12u1	DSA-5481-1
Debian:13	fastdds	2.10.1+ds-3	DEBIAN-CVE-2023-39945

Affected products (as reported)

Vendor	Product	Versions
eProsima	Fast-DDS	< 2.6.5>= 2.7.0, < 2.9.2>= 2.10.0, < 2.10.2

Weakness: CWE-248 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

References

https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-2rq6-8j7x-frr9 x_refsource_CONFIRM
https://bombshell.gtisc.gatech.edu/ddsfuzz/pcap/fastdds-exception-20230509-02.pcap x_refsource_MISC
https://github.com/eProsima/Fast-CDR/blob/v1.0.26/src/cpp/Cdr.cpp#L72-L79 x_refsource_MISC
https://www.debian.org/security/2023/dsa-5481