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CVE-2020-15350
Date: July 7, 2020
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.
Language: C
Severity Score
Severity Score
Weakness Type (CWE)
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE-120CVSS v3
| Base Score: |
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| Attack Vector (AV): | |
| Attack Complexity (AC): | |
| Privileges Required (PR): | |
| User Interaction (UI): | |
| Scope (S): | |
| Confidentiality (C): | PARTIAL |
| Integrity (I): | PARTIAL |
| Availability (A): | PARTIAL |
CVSS v2
| Base Score: |
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|---|---|
| Access Vector (AV): | |
| Access Complexity (AC): | |
| Authentication (AU): | |
| Confidentiality (C): | HIGH |
| Integrity (I): | NONE |
| Availability (A): | NONE |
| Additional information: |