#VU35028 Path traversal in Linux kernel - CVE-2019-10220

Vulnerability identifier: #VU35028

Vulnerability risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2019-10220

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

Linux kernel CIFS implementation, version 4.9.0 is vulnerable to a relative paths injection in directory entry lists.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 4.9.0

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External links
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10220
https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
https://security.netapp.com/advisory/ntap-20200103-0001/
https://usn.ubuntu.com/4226-1/

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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.