Remote Code Execution on LibVNC version prior to 0.9.12

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Advisories
KLCERT-20-009: Remote Code Execution on LibVNC version prior to 0.9.12

23 March 2020

KLCERT-20-009: Remote Code Execution on LibVNC version prior to 0.9.12

Vendor

LibVNC

CVE-IDS

2019-15690
KLCERT

KLCERT-20-009

Timeline

Kaspersky ICS CERT advisory published

23 March 2020
Vendor advisory published

December 2019
Vulnerability patched

December 2019
Vulnerability reported

December 2019

Description

LibVNC client code contains heap buffer overflow vulnerability in commit prior to 6073771eed1caf72f196e410182471e0dfd32149. This could possible result into remote code execution. This attack appear to be exploitable via network connectivity. The issue has been fixed in commit 54220248886b5001fbbb9fa73c4e1a2cb9413fed.

CVSS v3

0.0

(CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C)

Exploitability

Remotely

Attack complexity

Low

User interaction

None

Impact

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code.

Existence of exploit

Unknown

Affected products

LibVNC client commit prior to 6073771eed1caf72f196e410182471e0dfd32149

Mitigation

Vendor mitigation

Update current version of LibVNC client.

Kaspersky publishes information on newly identified vulnerabilities in order to raise user awareness of the IT security threats detected. Kaspersky does not make any guarantees in respect of information received from vendors of products in which vulnerabilities have been identified, which is included in the following sections of the advisory: Affected Products, Vendor Mitigation.

Timeline

Kaspersky ICS CERT advisory published

23 March 2020
Vendor advisory published

December 2019
Vulnerability patched

December 2019
Vulnerability reported

December 2019