RIOT 2020.04 has a buffer overflow in the base64 decoder. The decoding function base64_decode() uses an output buffer estimation function to compute the required buffer capacity and validate against the provided buffer size. The base64_estimate_decode_size() function calculates the expected decoded size with an arithmetic round-off error and does not take into account possible padding bytes. Due to this underestimation, it may be possible to craft base64 input that causes a buffer overflow.
History

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2020-07-07T16:37:39

Updated: 2024-08-04T13:15:20.192Z

Reserved: 2020-06-26T00:00:00

Link: CVE-2020-15350

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2020-07-07T17:15:10.530

Modified: 2021-07-21T11:39:23.747

Link: CVE-2020-15350

cve-icon Redhat

No data.