Vulnerability identifier: #VU18322

Vulnerability risk: Low

CVSSv3.1: 3.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-9893

CWE-ID: CWE-682

Exploitation vector: Network

Exploit availability: No

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

Vendor: The libseccomp Project

Description

The vulnerability allows a local user to bypass certain security restrictions.

The vulnerability exists due to incorrect 64-bit syscall argument comparison when using arithmetic operators, such as LT, GT, LE, or GE. A local user can bypass seccomp filters and gain elevated privileges on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

libseccomp: 0.1.0 - 2.3.3

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External links
http://github.com/seccomp/libseccomp/issues/139
http://seclists.org/oss-sec/2019/q1/179
http://security.gentoo.org/glsa/201904-18

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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.