An issue was discovered in MBed OS 6.16.0. When parsing hci reports, the hci parsing software dynamically determines the length of a list of reports by reading a byte from an input stream. It then fetches the length of the first report, uses it to calculate the beginning of the second report, etc. In doing this, it tracks the largest report so it can later allocate a buffer that fits every individual report (but only one at a time). It does not, however, validate that these addresses are all contained within the buffer passed to hciEvtProcessLeExtAdvReport. It is then possible, though unlikely, that the buffer designated to hold the reports is allocated in such a way that one of these out-of-bounds length fields is contained within the new buffer. When the (n-1)th report is copied, it overwrites the length field of the nth report. This now corrupted length field is then used for a memcpy into the new buffer, which may lead to a buffer overflow.
Metrics
Affected Vendors & Products
References
History
Mon, 25 Nov 2024 21:15:00 +0000
Type | Values Removed | Values Added |
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First Time appeared |
Mbed
Mbed mbed |
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Weaknesses | CWE-120 | |
CPEs | cpe:2.3:o:mbed:mbed:6.16.0:*:*:*:*:*:*:* | |
Vendors & Products |
Mbed
Mbed mbed |
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Metrics |
cvssV3_1
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Wed, 20 Nov 2024 20:30:00 +0000
Type | Values Removed | Values Added |
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Description | An issue was discovered in MBed OS 6.16.0. When parsing hci reports, the hci parsing software dynamically determines the length of a list of reports by reading a byte from an input stream. It then fetches the length of the first report, uses it to calculate the beginning of the second report, etc. In doing this, it tracks the largest report so it can later allocate a buffer that fits every individual report (but only one at a time). It does not, however, validate that these addresses are all contained within the buffer passed to hciEvtProcessLeExtAdvReport. It is then possible, though unlikely, that the buffer designated to hold the reports is allocated in such a way that one of these out-of-bounds length fields is contained within the new buffer. When the (n-1)th report is copied, it overwrites the length field of the nth report. This now corrupted length field is then used for a memcpy into the new buffer, which may lead to a buffer overflow. | |
References |
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MITRE
Status: PUBLISHED
Assigner: mitre
Published: 2024-11-20T00:00:00
Updated: 2024-11-25T21:09:11.078Z
Reserved: 2024-10-11T00:00:00
Link: CVE-2024-48984
Vulnrichment
Updated: 2024-11-25T21:01:51.329Z
NVD
Status : Awaiting Analysis
Published: 2024-11-20T21:15:07.920
Modified: 2024-11-25T22:15:14.253
Link: CVE-2024-48984
Redhat
No data.