#VU20020 Resource management error in FreeBSD


Vulnerability identifier: #VU20020

Vulnerability risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: N/A

CWE-ID: CWE-399

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
FreeBSD
Operating systems & Components / Operating system

Vendor: FreeBSD Foundation

Description

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

The vulnerability exists due to incorrect exception handling within the libunwind library when handling the unwinding of stack frames, when programs throw C or C++ style exceptions. A remote attacker can make the application to produce an exception that may lead to application crash and denial of service attack.

Mitigation

Install updates from vendor's website:


Vulnerable software versions

FreeBSD: 11.2 - 12.0

External links
https://www.freebsd.org/security/advisories/FreeBSD-EN-19:15.libunwind.asc

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.


Latest bulletins with this vulnerability


Multiple vulnerabilities in FreeBSD