PP TeleControl Server Basic 1000 to 5000 V3.1: Deserialization of Untrusted Data
CVE-2024-44102 is a critical-severity deserialization of untrusted data vulnerability in PP TeleControl Server Basic 1000 to 5000 V3.1 from Siemens, with a CVSS 3.1 base score of 10.0 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists version V3.1.2.1 as the first without the flaw, so updating PP TeleControl Server Basic 1000 to 5000 V3.1 to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 1% chance of exploitation within 30 days, higher than 63% of scored CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Update PP TeleControl Server Basic 1000 to 5000 V3.1 to V3.1.2.1 or a later version.
- Update PP TeleControl Server Basic 256 to 1000 V3.1 to V3.1.2.1 or a later version.
- Update PP TeleControl Server Basic 32 to 64 V3.1 to V3.1.2.1 or a later version.
- Read the advisory on cert-portal.siemens.com for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Siemens | PP TeleControl Server Basic 1000 to 5000 V3.1 | before V3.1.2.1 | V3.1.2.1 |
| Siemens | PP TeleControl Server Basic 256 to 1000 V3.1 | before V3.1.2.1 | V3.1.2.1 |
| Siemens | PP TeleControl Server Basic 32 to 64 V3.1 | before V3.1.2.1 | V3.1.2.1 |
| Siemens | PP TeleControl Server Basic 64 to 256 V3.1 | before V3.1.2.1 | V3.1.2.1 |
| Siemens | PP TeleControl Server Basic 8 to 32 V3.1 | before V3.1.2.1 | V3.1.2.1 |
| Siemens | TeleControl Server Basic 1000 V3.1 | before V3.1.2.1 | V3.1.2.1 |
| Siemens | TeleControl Server Basic 256 V3.1 | before V3.1.2.1 | V3.1.2.1 |
| Siemens | TeleControl Server Basic 32 V3.1 | before V3.1.2.1 | V3.1.2.1 |
| Siemens | TeleControl Server Basic 5000 V3.1 | before V3.1.2.1 | V3.1.2.1 |
| Siemens | TeleControl Server Basic 64 V3.1 | before V3.1.2.1 | V3.1.2.1 |
| Siemens | TeleControl Server Basic 8 V3.1 | before V3.1.2.1 | V3.1.2.1 |
| Siemens | TeleControl Server Basic Serv Upgr | before V3.1.2.1 | V3.1.2.1 |
| Siemens | TeleControl Server Basic Upgr V3.1 | before V3.1.2.1 | V3.1.2.1 |
| Siemens | telecontrol_server_basic | before 3.1.2.1 | 3.1.2.1 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- ChangedThe attack can reach beyond the vulnerable component into other systems.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H. Scored by CNA (siemens.com).
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 10.0 | Critical | CNA (siemens.com) |
| CVSS 3.1 | 10.0 | Critical | CNA (siemens.com) |
Official description
A vulnerability has been identified in PP TeleControl Server Basic 1000 to 5000 V3.1 (6NH9910-0AA31-0AE1) (All versions < V3.1.2.1 with redundancy configured), PP TeleControl Server Basic 256 to 1000 V3.1 (6NH9910-0AA31-0AD1) (All versions < V3.1.2.1 with redundancy configured), PP TeleControl Server Basic 32 to 64 V3.1 (6NH9910-0AA31-0AF1) (All versions < V3.1.2.1 with redundancy configured), PP TeleControl Server Basic 64 to 256 V3.1 (6NH9910-0AA31-0AC1) (All versions < V3.1.2.1 with redundancy configured), PP TeleControl Server Basic 8 to 32 V3.1 (6NH9910-0AA31-0AB1) (All versions < V3.1.2.1 with redundancy configured), TeleControl Server Basic 1000 V3.1 (6NH9910-0AA31-0AD0) (All versions < V3.1.2.1 with redundancy configured), TeleControl Server Basic 256 V3.1 (6NH9910-0AA31-0AC0) (All versions < V3.1.2.1 with redundancy configured), TeleControl Server Basic 32 V3.1 (6NH9910-0AA31-0AF0) (All versions < V3.1.2.1 with redundancy configured), TeleControl Server Basic 5000 V3.1 (6NH9910-0AA31-0AE0) (All versions < V3.1.2.1 with redundancy configured), TeleControl Server Basic 64 V3.1 (6NH9910-0AA31-0AB0) (All versions < V3.1.2.1 with redundancy configured), TeleControl Server Basic 8 V3.1 (6NH9910-0AA31-0AA0) (All versions < V3.1.2.1 with redundancy configured), TeleControl Server Basic Serv Upgr (6NH9910-0AA31-0GA1) (All versions < V3.1.2.1 with redundancy configured), TeleControl Server Basic Upgr V3.1 (6NH9910-0AA31-0GA0) (All versions < V3.1.2.1 with redundancy configured). The affected system allows remote users to send maliciously crafted objects. Due to insecure deserialization of user-supplied content by the affected software, an unauthenticated attacker could exploit this vulnerability by sending a maliciously crafted serialized object. This could allow the attacker to execute arbitrary code on the device with SYSTEM privileges.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Deserialization of Untrusted Data
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
How developers prevent this class of flaw
- If available, use the signing/sealing features of the programming language to assure that deserialized data has not been tainted. For example, a hash-based message authentication code (HMAC) could be used to ensure that data has not been modified.
- When deserializing data, populate a new object rather than just deserializing. The result is that the data flows through safe input validation and that the functions are safe.
- Explicitly define a final object() to prevent deserialization.
More Deserialization of Untrusted Data vulnerabilities (CWE-502)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Recent Deserialization of Untrusted Data vulnerabilities
- 8.0 High severity
- 7.3 High severity
- 8.1 High severity
- 8.1 High severity
- 9.8 Critical severity
- 9.8 Critical severity
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