KLCERT-18-032: LibVNC Multiple Memory Leaks

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KLCERT-18-032: LibVNC Multiple Memory Leaks

19 December 2018

Vendor

LibVNC

CVE-IDS

2018-20022
KLCERT

KLCERT-18-032

Timeline

Kaspersky ICS CERT advisory updated

02 November 2023
Kaspersky ICS CERT advisory published

19 December 2018
Vendor releases patch

September 2018
Vulnerabilities reported

11 September 2018

Description

LibVNCServer before 0.9.12 release contains multiple CWE-665: Improper Initialization weaknesses in VNC client code, which could allow an attacker to read stack memory and can be abused for information disclosure. Combined with another vulnerability, it can be used to leak stack memory layout and bypass ASLR.

CWE

CWE-665: Improper Initialization

CVSS v3

0.0

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

Exploitability

Remotely exploitable, network access is required

Attack complexity

Low

Privilege required

No privileges are required

User interaction

Required

Impact

Successful exploitation of this vulnerability could allow an attacker to cause information disclosure and expand attack vectors.

Existence of exploit

PoC

Affected products

LibVNCServer before 0.9.12 release

Mitigation

Update LibVNCServer to 0.9.12 release or newer.

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 updated

02 November 2023
Kaspersky ICS CERT advisory published

19 December 2018
Vendor releases patch

September 2018
Vulnerabilities reported

11 September 2018