Mobile Radio: Improper Handling of Overlap Between Protected Memory Ranges
CVE-2022-27813 is a high-severity improper handling of overlap between protected memory ranges vulnerability in Mobile Radio from Motorola, with a CVSS 3.1 base score of 8.2 out of 10. It can be exploited with local access to the system by an attacker with administrator privileges, without any action from a user. Affected Mobile Radio versions: MTM5000. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.19% 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
- Check which version of Mobile Radio you run against the affected versions below, and install the vendor's latest release.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Motorola | Mobile Radio | MTM5000 | Not stated |
| Motorola | Mtm5500 Firmware | Not specified in the record | Not stated |
| Motorola | Mtm5400 Firmware | Not specified in the record | 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
- HighAdministrator-level access is required first.
- 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:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 8.1 | High | CNA (ncsc.nl) |
| CVSS 3.1 | 8.2 | High | NVD |
Official description
Motorola MTM5000 series firmwares lack properly configured memory protection of pages shared between the OMAP-L138 ARM and DSP cores. The SoC provides two memory protection units, MPU1 and MPU2, to enforce the trust boundary between the two cores. Since both units are left unconfigured by the firmwares, an adversary with control over either core can trivially gain code execution on the other, by overwriting code located in shared RAM or DDR2 memory regions.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Handling of Overlap Between Protected Memory Ranges
The product allows address regions to overlap, which can result in the bypassing of intended memory protection.
How developers prevent this class of flaw
- Ensure that memory regions are isolated as intended and that access control (read/write) policies are used by hardware to protect privileged software.
More Improper Handling of Overlap Between Protected Memory Ranges vulnerabilities (CWE-1260)
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
- tetraburst.com/Technical Description
Other vulnerabilities in Mobile Radio
- 8.8 High severity
- 8.2 High severity
- 8.8 High severity
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