MT3605, MT6985, MT6989, MT6990, MT7925…: Out-of-bounds Read
CVE-2024-20138 is a high-severity out-of-bounds read vulnerability in MT3605, MT6985, MT6989, MT6990, MT7925, MT7927, MT8195, MT8370, MT8390 from MediaTek, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected MT3605, MT6985, MT6989, MT6990, MT7925, MT7927, MT8195, MT8370, MT8390 versions: Android 13.0, 14.0, 15.0 / SDK release 3.3 and before. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.29% 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 MT3605, MT6985, MT6989, MT6990, MT7925, MT7927, MT8195, MT8370, MT8390 you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on corp.mediatek.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 |
|---|---|---|---|
| MediaTek | MT3605, MT6985, MT6989, MT6990, MT7925, MT7927, MT8195, MT8370, MT8390 | Android 13.0, 14.0, 15.0 / SDK release 3.3 and before | Not stated |
| MediaTek | mt3605 | all versions | Not stated |
| MediaTek | mt6985 | all versions | Not stated |
| MediaTek | mt6989 | all versions | Not stated |
| MediaTek | mt6990 | all versions | Not stated |
| MediaTek | mt7925 | all versions | Not stated |
| MediaTek | mt7927 | all versions | Not stated |
| MediaTek | mt8195 | all versions | Not stated |
| MediaTek | mt8370 | all versions | Not stated |
| MediaTek | mt8390 | all versions | Not stated |
| MediaTek | Software Development Kit | 3.3 and earlier | Not stated |
| Android | 13.0; 14.0; 15.0 | 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
- 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
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- NoneNothing can be modified.
- Availability
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. Scored by CISA (ADP).
Official description
In wlan driver, there is a possible out of bound read due to improper input validation. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS08998291; Issue ID: MSV-1604.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Out-of-bounds Read
The product reads data past the end, or before the beginning, of the intended buffer.
How developers prevent this class of flaw
- Use a language that provides appropriate memory abstractions.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Recent Out-of-bounds Read vulnerabilities
- 7.1 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 7.8 High severity
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