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Vulnerability · Published Jul 9, 2024 · Assigned by siemens

CVE-2023-32735

Medium 6.5

In plain English

A medium-severity unsafe deserialization in SIMATIC STEP 7 Safety V16 from Siemens. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.2%top 88.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

A vulnerability has been identified in SIMATIC STEP 7 Safety V16 (All versions < V16 Update 7), SIMATIC STEP 7 Safety V17 (All versions < V17 Update 7), SIMATIC STEP 7 Safety V18 (All versions < V18 Update 2), SIMATIC STEP 7 V16 (All versions < V16 Update 7), SIMATIC STEP 7 V17 (All versions < V17 Update 7), SIMATIC STEP 7 V18 (All versions < V18 Update 2), SIMATIC WinCC Unified V16 (All versions < V16 Update 7), SIMATIC WinCC Unified V17 (All versions < V17 Update 7), SIMATIC WinCC Unified V18 (All versions < V18 Update 2), SIMATIC WinCC V16 (All versions < V16.7), SIMATIC WinCC V17 (All versions < V17.7), SIMATIC WinCC V18 (All versions < V18 Update 2), SIMOCODE ES V16 (All versions < V16 Update 7), SIMOCODE ES V17 (All versions < V17 Update 7), SIMOCODE ES V18 (All versions < V18 Update 2), SIMOTION SCOUT TIA V5.4 SP1 (All versions), SIMOTION SCOUT TIA V5.4 SP3 (All versions), SIMOTION SCOUT TIA V5.5 SP1 (All versions), SINAMICS Startdrive V16 (All versions), SINAMICS Startdrive V17 (All versions), SINAMICS Startdrive V18 (All versions), SIRIUS Safety ES V17 (All versions < V17 Update 7), SIRIUS Safety ES V18 (All versions < V18 Update 2), SIRIUS Soft Starter ES V17 (All versions < V17 Update 7), SIRIUS Soft Starter ES V18 (All versions < V18 Update 2), Soft Starter ES V16 (All versions < V16 Update 7), TIA Portal Cloud V3.0 (All versions < V18 Update 2). Affected applications do not properly restrict the .NET BinaryFormatter when deserializing hardware configuration profiles. This could allow an attacker to cause a type confusion and execute arbitrary code within the affected application. This is the same issue that exists for .NET BinaryFormatter https://docs.microsoft.com/en-us/visualstudio/code-quality/ca2300.

Affected products (as reported)

VendorProductVersions
Siemens SIMATIC STEP 7 Safety V16 0 – before V16 Update 7
Siemens SIMATIC STEP 7 Safety V17 0 – before V17 Update 7
Siemens SIMATIC STEP 7 Safety V18 0 – before V18 Update 2
Siemens SIMATIC STEP 7 V16 0 – before V16 Update 7
Siemens SIMATIC STEP 7 V17 0 – before V17 Update 7
Siemens SIMATIC STEP 7 V18 0 – before V18 Update 2
Siemens SIMATIC WinCC Unified V16 0 – before V16 Update 7
Siemens SIMATIC WinCC Unified V17 0 – before V17 Update 7
Siemens SIMATIC WinCC Unified V18 0 – before V18 Update 2
Siemens SIMATIC WinCC V16 0 – before V16.7
Siemens SIMATIC WinCC V17 0 – before V17.7
Siemens SIMATIC WinCC V18 0 – before V18 Update 2
Siemens SIMOCODE ES V16 0 – before V16 Update 7
Siemens SIMOCODE ES V17 0 – before V17 Update 7
Siemens SIMOCODE ES V18 0 – before V18 Update 2
Siemens SIMOTION SCOUT TIA V5.4 SP1 0 – before *
Siemens SIMOTION SCOUT TIA V5.4 SP3 0 – before *
Siemens SIMOTION SCOUT TIA V5.5 SP1 0 – before *
Siemens SINAMICS Startdrive V16 0 – before *
Siemens SINAMICS Startdrive V17 0 – before *
Siemens SINAMICS Startdrive V18 0 – before *
Siemens SIRIUS Safety ES V17 0 – before V17 Update 7
Siemens SIRIUS Safety ES V18 0 – before V18 Update 2
Siemens SIRIUS Soft Starter ES V17 0 – before V17 Update 7
Siemens SIRIUS Soft Starter ES V18 0 – before V18 Update 2
Siemens Soft Starter ES V16 0 – before V16 Update 7
Siemens TIA Portal Cloud V3.0 0 – before V18 Update 2

Weakness: CWE-502 · Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

References