19 December 2018

KLCERT-18-026: LibVNC Heap Use-After-Free

Vendor

LibVNC

Timeline

Timeline

  • Kaspersky ICS CERT advisory published

    December 2018

  • Vendor advisory published

    December 2018

  • Patched

    October 2018

  • Vulnerability reported

    August 2018

Description

LibVNC before commit ca2a5ac02fbbadd0a21fabba779c1ea69173d10b contains a heap use-after-free vulnerability in the server code of the file transfer extension, which can result in remote code execution. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in ca2a5ac02fbbadd0a21fabba779c1ea69173d10b and later.

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 ca2a5ac02fbbadd0a21fabba779c1ea69173d10b

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

    August 2018