Overview
- Description
- TI’s BLE stack caches and reuses the LTK’s property for a bonded mobile. A LTK can be an unauthenticated-and-no-MITM-protection key created by Just Works or an authenticated-and-MITM-protection key created by Passkey Entry, Numeric Comparison or OOB. Assume that a victim mobile uses secure pairing to pair with a victim BLE device based on TI chips and generate an authenticated-and-MITM-protection LTK. If a fake mobile with the victim mobile’s MAC address uses Just Works and pairs with the victim device, the generated LTK still has the property of authenticated-and-MITM-protection. Therefore, the fake mobile can access attributes with the authenticated read/write permission.
- Source
- cve@mitre.org
- NVD status
- Analyzed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 6.8
- Impact score
- 5.2
- Exploitability score
- 1.6
- Vector string
- CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- Severity
- MEDIUM
CVSS 2.0
- Type
- Primary
- Base score
- 4.3
- Impact score
- 4.9
- Exploitability score
- 5.5
- Vector string
- AV:A/AC:M/Au:N/C:P/I:P/A:N
Weaknesses
- nvd@nist.gov
- CWE-863
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:ti:15.4-stack:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F2973A2C-67E6-4064-A2A9-E4122E201DDF"
},
{
"criteria": "cpe:2.3:a:ti:ble5-stack:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "0E161F37-86D3-4558-91B4-086528A351AA"
},
{
"criteria": "cpe:2.3:a:ti:dynamic_multi-protocal_manager:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F9951BB2-E930-4C92-B673-501591679002"
},
{
"criteria": "cpe:2.3:a:ti:easylink:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "74934E63-1140-4F9B-BC05-3739E62B9DE4"
},
{
"criteria": "cpe:2.3:a:ti:openthread:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B3586ABB-3E4A-4BAD-B9F4-5EB6775AFEF3"
},
{
"criteria": "cpe:2.3:a:ti:z-stack:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "BA516494-4D9A-4275-A7BA-A82699625477"
},
{
"criteria": "cpe:2.3:o:ti:real-time_operating_system:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "E289611E-871B-433E-BF10-CDABF650AAC9"
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],
"operator": "OR"
}
]
}
]