Vulnerability Details CVE-2023-30546
Contiki-NG is an operating system for Internet of Things devices. An off-by-one error can be triggered in the Antelope database management system in the Contiki-NG operating system in versions 4.8 and prior. The problem exists in the Contiki File System (CFS) backend for the storage of data (file os/storage/antelope/storage-cfs.c). In the functions `storage_get_index` and `storage_put_index`, a buffer for merging two strings is allocated with one byte less than the maximum size of the merged strings, causing subsequent function calls to the cfs_open function to read from memory beyond the buffer size. The vulnerability has been patched in the "develop" branch of Contiki-NG, and is expected to be included in the next release. As a workaround, the problem can be fixed by applying the patch in Contiki-NG pull request #2425.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 43.9%
CVSS Severity
CVSS v3 Score 9.8
References
Products affected by CVE-2023-30546
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cpe:2.3:o:contiki-ng:contiki-ng:-
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cpe:2.3:o:contiki-ng:contiki-ng:2.0
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cpe:2.3:o:contiki-ng:contiki-ng:2.1
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cpe:2.3:o:contiki-ng:contiki-ng:2.2
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cpe:2.3:o:contiki-ng:contiki-ng:2.2.1
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cpe:2.3:o:contiki-ng:contiki-ng:2.2.2
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cpe:2.3:o:contiki-ng:contiki-ng:2.2.3
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cpe:2.3:o:contiki-ng:contiki-ng:2.3
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cpe:2.3:o:contiki-ng:contiki-ng:2.4
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cpe:2.3:o:contiki-ng:contiki-ng:2.5
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cpe:2.3:o:contiki-ng:contiki-ng:2.6
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cpe:2.3:o:contiki-ng:contiki-ng:2.7
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cpe:2.3:o:contiki-ng:contiki-ng:3.0
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cpe:2.3:o:contiki-ng:contiki-ng:4.0
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cpe:2.3:o:contiki-ng:contiki-ng:4.1
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cpe:2.3:o:contiki-ng:contiki-ng:4.2
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cpe:2.3:o:contiki-ng:contiki-ng:4.3
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cpe:2.3:o:contiki-ng:contiki-ng:4.4
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cpe:2.3:o:contiki-ng:contiki-ng:4.5
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cpe:2.3:o:contiki-ng:contiki-ng:4.6
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cpe:2.3:o:contiki-ng:contiki-ng:4.7
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cpe:2.3:o:contiki-ng:contiki-ng:4.8