Vulnerability identifier: #VU25457

Vulnerability risk: Low

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

CVE-ID: CVE-2020-7211

CWE-ID: CWE-22

Exploitation vector: Local network

Exploit availability: No

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

Vendor: Freedesktop.org

Description

The vulnerability allows an  attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences within tftp.c in libslirp. A remote attacker can send a specially crafted TFPT request and read arbitrary files on the Windows system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

libslirp: 4.1.0

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External links
http://www.openwall.com/lists/oss-security/2020/01/17/2
http://gitlab.freedesktop.org/slirp/libslirp/commit/14ec36e107a8c9af7d0a80c3571fe39b291ff1d4
http://security-tracker.debian.org/tracker/CVE-2020-7211

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.