Vulnerability identifier: #VU14698

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C]

CVE-ID: CVE-2018-14621

CWE-ID: CWE-835

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libtirpc
Universal components / Libraries / Libraries used by multiple products

Vendor: linux-nfs.org

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The vulnerability exists due to improper handling of port settings. A remote attacker can configure the role of the targeted port to poll, rather than select, trigger infinite loop and cause the service to crash.

Mitigation
Update to version 1.0.2-rc2.

Vulnerable software versions

libtirpc: 0.3.0 - 1.0.2

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External links
http://git.linux-nfs.org/?p=steved/libtirpc.git;a=commit;h=ddcd00ed2055a4e79f5d2579d63d5ea294eda6cc

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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. However, proof of concept for this vulnerability is available.