KLCERT-18-030: LibVNC Heap Out-of-Bound Write

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KLCERT-18-030: LibVNC Heap Out-of-Bound Write

19 December 2018

Vendor

LibVNC

CVE-IDS

2018-20020
KLCERT

KLCERT-18-030

Timeline

Kaspersky ICS CERT advisory published

19 December 2018
Vendor releases patch

October 2018
Vulnerability reported

August 2018

Description

LibVNC before commit 7b1ef0ffc4815cab9a96c7278394152bdc89dc4d contains a heap out-of-bound write vulnerability in a structure in VNC client code, which can result in remote code execution. This attack appear to be exploitable via network connectivity. This vulnerability has been fixed in 7b1ef0ffc4815cab9a96c7278394152bdc89dc4d and later.

CVSS v3

0.0

(CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H)

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 before commit 7b1ef0ffc4815cab9a96c7278394152bdc89dc4d

Mitigation

Vendor mitigation

Update LibVNC to 0.9.12

Kaspersky Lab publishes information on newly identified vulnerabilities in order to raise user awareness of the IT security threats detected. Kaspersky Lab 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

19 December 2018
Vendor releases patch

October 2018
Vulnerability reported

August 2018