16 мая 2019

KLCERT-19-026: Siemens WinCC local denial of service

Vendor

Siemens

Timeline

Timeline

  • Kaspersky ICS CERT advisory updated

    26 января 2024

  • Kaspersky ICS CERT advisory published

    15 мая 2019

  • Vendor releases patch

    мая 2019

  • Vulnerabilities acknowledged by Vendor

    декабря 2018

  • Vulnerabilities reported

    декабря 2018

Description

An attacker with local access to the project file could cause a Denial-of-Service condition on the affected product while the project file is loaded. Successful exploitation requires access to the project file. An attacker could use the vulnerability to compromise availability of the affected system.

Exploitability

Local

Attack complexity

Low

User interaction

Required

Impact

Availability of the system is partially affected

Existence of exploit

PoC

Affected products

SIMATIC PCS 7 V8.0 and earlier: All versions
SIMATIC PCS 7 V8.1: All versions
SIMATIC PCS 7 V8.2: All versions
SIMATIC PCS 7 V9.0: All versions
SIMATIC WinCC (TIA Portal) V13: All versions
SIMATIC WinCC (TIA Portal) V14: All versions
SIMATIC WinCC (TIA Portal) V15: All versions
SIMATIC WinCC Runtime Professional: All versions
SIMATIC WinCC V7.2 and earlier: All versions
SIMATIC WinCC V7.3: All versions
SIMATIC WinCC V7.4: All versions
SIMATIC WinCC V7.5: All versions < V7.5 Upd3

Mitigation

Vendor mitigation

Siemens has identified the following specific workarounds and mitigations that customers can apply to reduce the risk:

  • Apply Defense-in-Depth
  • Enable “Encrypted communication” in SIMATIC WinCC and SIMATIC PCS 7.
  • Only open project files from trusted locations.
Product Versions Mitigations
SIMATIC PCS 7
<8.1.0.0
SIMATIC PCS 7
>=8.2.0.0;
<8.2.1.0
SIMATIC PCS 7
>=9.0.0.0;
<9.0.2.0
SIMATIC WinCC (TIA Portal)
>=13.0.0;
<14.0.0
NO FIX
SIMATIC WinCC (TIA Portal)
All versions < V14 SP1 Upd 9
>=14.0.0.0;
<14.0.1.9
SIMATIC WinCC (TIA Portal)
All versions < V15.1 Upd 3
>=15.0.0.0;
<15.1.0.3
SIMATIC WinCC
Runtime Professional
All versions < V13
NO FIX
SIMATIC WinCC
Runtime Professional
All versions < V14.1 Upd 8
>=14.0.0.0;
<14.1.0.8
SIMATIC WinCC
Runtime Professional
All versions < V15.1 Upd 3
>=15.0.0.0;
<15.1.0.3
SIMATIC WinCC V7.2 and earlier
All versions
NO FIX
WinCC v7.3
All versions < V7.3 Upd 19
>=7.3.0.0;
<7.3.0.19
WinCC v7.4
All versions < V7.4 SP1 Upd 11
>=7.4.0.0;
<7.4.1.11
WinCC v7.5
All versions < V7.5 Upd 3
>=7.5.0.0;
<7.5.0.3

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

    26 января 2024

  • Kaspersky ICS CERT advisory published

    15 мая 2019

  • Vendor releases patch

    мая 2019

  • Vulnerabilities acknowledged by Vendor

    декабря 2018

  • Vulnerabilities reported

    декабря 2018