#VU29379 Information disclosure in LibVNCServer


Published: 2020-06-30

Vulnerability identifier: #VU29379

Vulnerability risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-14400

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
LibVNCServer
Server applications / Remote management servers, RDP, SSH

Vendor: LibVNC

Description

The vulnerability allows a remote user to gain access to potentially sensitive information.

The vulnerability exists due to byte-aligned data is accessed through uint16_t pointers in libvncserver/translate.c. A remote authenticated user can gain unauthorized access to sensitive information on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

LibVNCServer: 0.9.0 - 0.9.12


External links
http://github.com/LibVNC/libvncserver/commit/53073c8d7e232151ea2ecd8a1243124121e10e2d
http://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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


Latest bulletins with this vulnerability