CVE-2020-15350

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.

CVSS v3 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://drive.google.com/file/d/1jMCAi8uawV1-an5uCghIxT2TEdxCE1Lk/view?usp=sharing	Mailing List Patch Third Party Advisory
https://github.com/RIOT-OS/RIOT/pull/14400	Patch Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:o:riot-os:riot:2020.04:*:*:*:*:*:*:*

History

No history.

Information

Published : 2020-07-07 17:15

Updated : 2021-07-21 11:39

NVD link : CVE-2020-15350

Mitre link : CVE-2020-15350

CVE.ORG link : CVE-2020-15350

JSON object : View

Products Affected

riot-os

riot

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-131

Incorrect Calculation of Buffer Size

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9.8 /10