Autodesk Advanced Steel, Civil 3D, AutoCAD…: Use After Free
CVE-2022-25789 is a high-severity use after free vulnerability in Autodesk Advanced Steel, Civil 3D, AutoCAD, AutoCAD LT, AutoCAD Architecture, AutoCAD Electrical, AutoCAD Map 3D, AutoCAD Mechanical, AutoCAD MEP, AutoCAD Plant 3D, 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 Advanced Steel, Civil 3D, AutoCAD, AutoCAD LT, AutoCAD Architecture, AutoCAD Electrical, AutoCAD Map 3D, AutoCAD Mechanical, AutoCAD MEP, AutoCAD Plant 3D versions: 2022.1.1. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 1.64% chance of exploitation within 30 days, higher than 77% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Advance Steel to 2019.1.4 or 2020.1.5 or 2021.1.2 or 2022.1.2, whichever matches your release line, or a later version.
- Update Autocad to 2019.1.4 or 2020.1.5 or 2021.1.2 or 2022.1.2, whichever matches your release line, or a later version.
- Update Autocad Architecture to 2019.1.4 or 2020.1.5 or 2021.1.2 or 2022.1.2, whichever matches your release line, or a later version.
- 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 Advanced Steel, Civil 3D, AutoCAD, AutoCAD LT, AutoCAD Architecture, AutoCAD Electrical, AutoCAD Map 3D, AutoCAD Mechanical, AutoCAD MEP, AutoCAD Plant 3D | Autodesk Advanced Steel, Civil 3D, AutoCAD, AutoCAD LT, AutoCAD Architecture, AutoCAD Electrical, AutoCAD Map 3D, AutoCAD Mechanical, AutoCAD MEP, AutoCAD Plant 3D | 2022.1.1 | Not stated |
| Autodesk | Advance Steel | 2019 up to, but not including, 2019.1.4; 2020 up to, but not including, 2020.1.5; 2021 up to, but not including, 2021.1.2; 2022 up to, but not including, 2022.1.2 | 2019.1.4, 2020.1.5, 2021.1.2, 2022.1.2 |
| Autodesk | Autocad | 2019 up to, but not including, 2019.1.4; 2020 up to, but not including, 2020.1.5; 2021 up to, but not including, 2021.1.2; 2022 up to, but not including, 2022.1.2; 2022 up to, but not including, 2022.2.2 | 2019.1.4, 2020.1.5, 2021.1.2, 2022.1.2, 2022.2.2 |
| Autodesk | Autocad Architecture | 2019 up to, but not including, 2019.1.4; 2020 up to, but not including, 2020.1.5; 2021 up to, but not including, 2021.1.2; 2022 up to, but not including, 2022.1.2 | 2019.1.4, 2020.1.5, 2021.1.2, 2022.1.2 |
| Autodesk | Autocad Electrical | 2019 up to, but not including, 2019.1.4; 2020 up to, but not including, 2020.1.5; 2021 up to, but not including, 2021.1.2; 2022 up to, but not including, 2022.1.2 | 2019.1.4, 2020.1.5, 2021.1.2, 2022.1.2 |
| Autodesk | Autocad Lt | 2019 up to, but not including, 2019.1.4; 2020 up to, but not including, 2020.1.5; 2021 up to, but not including, 2021.1.2; 2022 up to, but not including, 2022.1.2 | 2019.1.4, 2020.1.5, 2021.1.2, 2022.1.2 |
| Autodesk | Autocad Map 3d | 2019 up to, but not including, 2019.1.4; 2020 up to, but not including, 2020.1.5; 2021 up to, but not including, 2021.1.2; 2022 up to, but not including, 2022.1.2 | 2019.1.4, 2020.1.5, 2021.1.2, 2022.1.2 |
| Autodesk | Autocad Mechanical | 2019 up to, but not including, 2019.1.4; 2020 up to, but not including, 2020.1.5; 2021 up to, but not including, 2021.1.2; 2022 up to, but not including, 2022.1.2 | 2019.1.4, 2020.1.5, 2021.1.2, 2022.1.2 |
| Autodesk | Autocad Mep | 2019 up to, but not including, 2019.1.4; 2020 up to, but not including, 2020.1.5; 2021 up to, but not including, 2021.1.2; 2022 up to, but not including, 2022.1.2 | 2019.1.4, 2020.1.5, 2021.1.2, 2022.1.2 |
| Autodesk | Autocad Plant 3d | 2019 up to, but not including, 2019.1.4; 2020 up to, but not including, 2020.1.5; 2021 up to, but not including, 2021.1.2; 2022 up to, but not including, 2022.1.2 | 2019.1.4, 2020.1.5, 2021.1.2, 2022.1.2 |
| Autodesk | Civil 3d | 2019 up to, but not including, 2019.1.4; 2020 up to, but not including, 2020.1.5; 2021 up to, but not including, 2021.1.2; 2022 up to, but not including, 2022.1.2 | 2019.1.4, 2020.1.5, 2021.1.2, 2022.1.2 |
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
A maliciously crafted DWF, 3DS and DWFX files in Autodesk AutoCAD 2022, 2021, 2020, 2019 can be used to trigger use-after-free vulnerability. Exploitation of this vulnerability may lead to code execution.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Use After Free
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory belongs to the code that operates on the new pointer.
How developers prevent this class of flaw
- Choose a language that provides automatic memory management.
- When freeing pointers, be sure to set them to NULL once they are freed. However, the utilization of multiple or complex data structures may lower the usefulness of this strategy.
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in Autodesk Advanced Steel, Civil 3D, AutoCAD, AutoCAD LT, AutoCAD Architecture, AutoCAD Electrical, AutoCAD Map 3D, AutoCAD Mechanical, AutoCAD MEP, AutoCAD Plant 3D
- 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 Use After Free vulnerabilities
- 7.0 High severity
- 7.8 High severity
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- 8.8 High severity
- 8.8 High severity
- 8.8 High severity
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