Vulnerability identifier: #VU31719

Vulnerability risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-4044

CWE-ID: CWE-121

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
xrdp
Other software / Other software solutions

Vendor: neutrinolabs

Description

The vulnerability allows a local user to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error. A local user can trigger stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

xrdp: 0.6.0 - 0.9.13

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External links
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00036.html
http://github.com/neutrinolabs/xrdp/commit/0c791d073d0eb344ee7aaafd221513dc9226762c
http://github.com/neutrinolabs/xrdp/releases/tag/v0.9.13.1
http://github.com/neutrinolabs/xrdp/security/advisories/GHSA-j9fv-6fwf-p3g4

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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