Autodesk AutoCAD product suite, Revit, Design…: Allocation of Resources Without Limits or Throttling
CVE-2022-27871 is a high-severity allocation of resources without limits or throttling vulnerability in Autodesk AutoCAD product suite, Revit, Design Review and Navisworks, 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. Affected Autodesk AutoCAD product suite, Revit, Design Review and Navisworks versions: 2022, 2021, 2020,2019. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.82% chance of exploitation within 30 days, higher than 58% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of Autodesk AutoCAD product suite, Revit, Design Review and Navisworks you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on autodesk.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 |
|---|---|---|---|
| Autodesk AutoCAD product suite, Revit, Design Review and Navisworks | Autodesk AutoCAD product suite, Revit, Design Review and Navisworks | 2022, 2021, 2020,2019 | Not stated |
| Autodesk | 3ds Max | 2021; 2022 | Not stated |
| Autodesk | Advance Steel | 2019; 2020; 2021; 2022 | Not stated |
| Autodesk | Autocad | 2019; 2020; 2021; 2022 | Not stated |
| Autodesk | Autocad Architecture | 2019; 2020; 2021; 2022 | Not stated |
| Autodesk | Autocad Civil 3d | 2019; 2020; 2021; 2022 | Not stated |
| Autodesk | Autocad Electrical | 2019; 2020; 2021; 2022 | Not stated |
| Autodesk | Autocad Lt | 2019; 2020; 2021; 2022 | Not stated |
| Autodesk | Autocad Map 3d | 2019; 2020; 2021; 2022 | Not stated |
| Autodesk | Autocad Mechanical | 2019; 2020; 2021; 2022 | Not stated |
| Autodesk | Autocad Mep | 2019; 2020; 2021; 2022 | Not stated |
| Autodesk | Autocad Plant 3d | 2019; 2020; 2021; 2022 | Not stated |
| Autodesk | Design Review | 2018 | Not stated |
| Autodesk | Navisworks | 2019; 2020; 2022 | Not stated |
| Autodesk | Revit | 2020; 2021; 2022 | Not stated |
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 3.1 | 7.8 | High | NVD |
| CVSS 2.0 | 6.8 | Medium | NVD |
Official description
Autodesk AutoCAD product suite, Revit, Design Review and Navisworks releases using PDFTron prior to 9.1.17 version may be used to write beyond the allocated buffer while parsing PDF files. This vulnerability may be exploited to execute arbitrary code.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Allocation of Resources Without Limits or Throttling
The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.
How developers prevent this class of flaw
- Clearly specify the minimum and maximum expectations for capabilities, and dictate which behaviors are acceptable when resource allocation reaches limits.
- Limit the amount of resources that are accessible to unprivileged users. Set per-user limits for resources. Allow the system administrator to define these limits. Be careful to avoid CWE-410.
- For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
More Allocation of Resources Without Limits or Throttling vulnerabilities (CWE-770)
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
Recent Allocation of Resources Without Limits or Throttling vulnerabilities
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
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