Remote code execution in LibVNC



Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-15690
CWE-ID CWE-122
Exploitation vector Network
Public exploit N/A
Vulnerable software
 LibVNCServer
Server applications / Remote management servers, RDP, SSH

Vendor LibVNC

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Heap-based buffer overflow

EUVDB-ID: #VU26343

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-2019-15690

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error. A remote attacker can trigger heap-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

LibVNCServer: before 1.10.1

CPE2.3 External links

https://ics-cert.kaspersky.com/advisories/klcert-advisories/2020/03/23/klcert-20-009-remote-code-execution-on-libvnc-version-prior-to-1-10-1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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



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