Parasolid V34.1: NULL Pointer Dereference
CVE-2023-38524 is a high-severity NULL pointer dereference vulnerability in Parasolid V34.1 from Siemens, with a CVSS 3.1 base score of 7.8 out of 10. It can be exploited with local access to the system by an unauthenticated attacker, but only if a user takes part, for example by opening a link or file. The record lists version V34.1.258 as the first without the flaw, so updating Parasolid V34.1 to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.2% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Parasolid V34.1 to V34.1.258 or a later version.
- Update Parasolid V35.0 to V35.0.254 or a later version.
- Update Parasolid V35.1 to V35.1.171 or a later version.
- Read the advisory on cert-portal.siemens.com for workarounds and exact fixed builds.
- Because the attack needs a user to take part, warn users about unexpected links and files related to this product until it is patched.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Siemens | Parasolid V34.1 | before V34.1.258 | V34.1.258 |
| Siemens | Parasolid V35.0 | before V35.0.254 | V35.0.254 |
| Siemens | Parasolid V35.1 | before V35.1.171 | V35.1.171 |
| Siemens | Teamcenter Visualization V14.1 | before V14.1.0.11 | V14.1.0.11 |
| Siemens | Teamcenter Visualization V14.2 | before V14.2.0.6 | V14.2.0.6 |
| Siemens | Teamcenter Visualization V14.3 | before V14.3.0.3 | V14.3.0.3 |
| Siemens | Parasolid | 34.1 up to, but not including, 34.1.258; 35.0 up to, but not including, 35.0.254; 35.1 up to, but not including, 35.1.171 | 34.1.258, 35.0.254, 35.1.171 |
| Siemens | Teamcenter Visualization | 14.1 up to, but not including, 14.1.0.11; 14.2 up to, but not including, 14.2.0.6; 14.3 up to, but not including, 14.3.0.3 | 14.1.0.11, 14.2.0.6, 14.3.0.3 |
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
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- RequiredA user must take an action such as opening a file or link.
- Scope
- UnchangedImpact stays within the vulnerable component.
- 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:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 2.0 | Low | CNA (siemens.com) |
| CVSS 3.1 | 3.3 | Low | CNA (siemens.com) |
| CVSS 3.1 | 7.8 | High | NVD |
Official description
A vulnerability has been identified in Parasolid V34.1 (All versions < V34.1.258), Parasolid V35.0 (All versions < V35.0.254), Parasolid V35.1 (All versions < V35.1.171), Teamcenter Visualization V14.1 (All versions < V14.1.0.11), Teamcenter Visualization V14.2 (All versions < V14.2.0.6), Teamcenter Visualization V14.3 (All versions < V14.3.0.3). The affected applications contain null pointer dereference while parsing specially crafted X_T files. This could allow an attacker to execute code in the context of the current process.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: NULL Pointer Dereference
The product dereferences a pointer that it expects to be valid but is NULL.
How developers prevent this class of flaw
- For any pointers that could have been modified or provided from a function that can return NULL, check the pointer for NULL before use. When working with a multithreaded or otherwise asynchronous environment, ensure that proper locking APIs are used to lock before the check, and unlock when it has finished.
- Select a programming language that is not susceptible to these issues.
- Check the results of all functions that return a value and verify that the value is non-null before acting upon it.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Other references
Other vulnerabilities in Parasolid V34.1
- 7.8 High severity
- 7.8 High severity
- 7.8 High severity
- 7.8 High severity
- 7.8 High severity
- 7.8 High severity
Recent NULL Pointer Dereference vulnerabilities
- 7.5 High severity
- 7.5 High severity
- 7.8 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
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