28 July 2017

KLCERT-17-003: Sentinel LDK RTE: malformed ASN1 streams in V2C files lead to Remote Code Execution

Vendor

Sentinel

Timeline

Timeline

  • Kaspersky ICS CERT advisory published

    26 January 2017

  • Vendor advisory published

    16 June 2017

  • Vendor confirmation

    30 June 2017

  • Vulnerability reported

    03 January 2017

Description

Malformed ASN1 streams in V2C and similar input files can be used to generate stack buffer overflows. The vulnerability causes an arbitrary code execution.
OVAL definition*

Exploitability

Remotely

Attack complexity

Low

User interaction

None

Impact

An unauthenticated attacker may be able to exploit vulnerability and execute arbitrary code on remote system.

Existence of exploit

Unknown

Affected products

HASP SRM, Sentinel HASP and Sentinel LDK products, prior to Sentinel LDK RTE 7.55 (hasplms.exe before 19.3.1.66130).

Mitigation

Vendor mitigation

Customers who have Sentinel LDK (RTE) Run-time Environment version (v2.10 – 7.50) are advised to update their Sentinel LDK RTE to the latest Sentinel LDK RTE component (v 7.55) which was released on May 25, 2017. This update can be found on the Sentinel Downloads site.

Kaspersky Lab mitigation

For Industrial Control Systems it is necessary:

  • implement network monitoring to detect suspicious behavior on the remote port 1947;
  • monitor the suspicious file executions.

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

    26 January 2017

  • Vendor advisory published

    16 June 2017

  • Vendor confirmation

    30 June 2017

  • Vulnerability reported

    03 January 2017