CVE-2020-15350

Published on: 07/07/2020 12:00:00 AM UTC

Last Modified on: 07/21/2021 11:39:00 AM UTC

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Certain versions of Riot from Riot-os contain the following vulnerability:

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.

  • CVE-2020-15350 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as CRITICAL severity.

CVSS3 Score: 9.8 - CRITICAL

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
NETWORK LOW NONE NONE
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
UNCHANGED HIGH HIGH HIGH

CVSS2 Score: 7.5 - HIGH

Access
Vector
Access
Complexity
Authentication
NETWORK LOW NONE
Confidentiality
Impact
Integrity
Impact
Availability
Impact
PARTIAL PARTIAL PARTIAL

CVE References

Description Tags Link
base64_decoder.md - Google Drive Mailing List
Patch
Third Party Advisory
web.archive.org
text/html
Inactive LinkNot Archived
URL Logo MISC drive.google.com/file/d/1jMCAi8uawV1-an5uCghIxT2TEdxCE1Lk/view?usp=sharing
sys/base64: Fix, unit test cleanup, and benchmark by maribu · Pull Request #14400 · RIOT-OS/RIOT · GitHub Patch
Third Party Advisory
github.com
text/html
URL Logo MISC github.com/RIOT-OS/RIOT/pull/14400

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
Operating
System
Riot-osRiot2020.04AllAllAll
Operating
System
Riot-osRiot2020.04AllAllAll
  • cpe:2.3:o:riot-os:riot:2020.04:*:*:*:*:*:*:*:
  • cpe:2.3:o:riot-os:riot:2020.04:*:*:*:*:*:*:*:
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