A vulnerability classified as critical was found in Siemens SIMATIC WinCC OA 3.16/3.17/3.18 (SCADA Software). Affected by this vulnerability is an unknown function. The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A vulnerability has been identified in SIMATIC WinCC OA V3.16 (All versions in default configuration), SIMATIC WinCC OA V3.17 (All versions in non-default configuration), SIMATIC WinCC OA V3.18 (All versions in non-default configuration). Affected applications use client-side only authentication, when neither server-side authentication (SSA) nor Kerberos authentication is enabled. In this configuration, attackers could impersonate other users or exploit the client-server protocol without being authenticated.

The weakness was disclosed 06/21/2022 as ssa-111512. It is possible to read the advisory at cert-portal.siemens.com. This vulnerability is known as CVE-2022-33139 since 06/13/2022. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 06/21/2022).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Productinfo

Type

• SCADA Software

Vendor

• Siemens

Name

• SIMATIC WinCC OA

Version

• 3.16
• 3.17
• 3.18

License

• commercial

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CPE 2.2info

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