Improper input validation in Fisco-Bcos

CVE-2021-35041

The blockchain node in FISCO-BCOS V2.7.2 may have a bug when dealing with unformatted packet and lead to a crash. A malicious node can send a packet continuously. The packet is in an incorrect format and cannot be decoded by the node correctly. As a result, the node may consume the memory sustainably and crash. More details are shown at: https://github.com/FISCO-BCOS/FISCO-BCOS/issues/1951

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.013 (66.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

References

  • cve@mitre.org (Exploit, Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-35041?
CVE-2021-35041 is a high-severity vulnerability in Fisco-Bcos, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2021-06-24.
How severe is CVE-2021-35041?
High severity. CVSS v3 base score is 7.5 out of 10.