19 December 2018

KLCERT-18-034: LibVNC NULL Pointer Dereference

Vendor

LibVNC

Timeline

Timeline

  • Kaspersky ICS CERT advisory published

    December 2018

  • Vendor advisory published

    December 2018

  • Patched

    October 2018

  • Vulnerability reported

    September 2018

Description

LibVNC before commit 4a21bbd097ef7c44bb000c3bd0907f96a10e4ce7 contains a null pointer dereference in VNC client code, which can result in DoS. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in 4a21bbd097ef7c44bb000c3bd0907f96a10e4ce7 and later.

Exploitability

Remotely

Attack complexity

Low

User interaction

None

Impact

Successful exploitation of this vulnerability could allow an attacker to cause a denial-of-service condition.

Existence of exploit

Unknown

Affected products

LibVNC before commit 4a21bbd097ef7c44bb000c3bd0907f96a10e4ce7

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

    December 2018

  • Vendor advisory published

    December 2018

  • Patched

    October 2018

  • Vulnerability reported

    September 2018