CVE-2021-35041 — HIGH (7.5)

Vulnerability Description

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

CVSS Score

7.5

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Fisco-Bcos	Fisco-Bcos	2.7.2

Related Weaknesses (CWE)

CWE-20

References

https://github.com/FISCO-BCOS/FISCO-BCOS/issues/1951ExploitPatchThird Party Advisory
https://github.com/FISCO-BCOS/FISCO-BCOS/issues/1951ExploitPatchThird Party Advisory

FAQ

What is CVE-2021-35041?

CVE-2021-35041 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 ...

How severe is CVE-2021-35041?

CVE-2021-35041 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-35041?

Check the references section above for vendor advisories and patch information. Affected products include: Fisco-Bcos Fisco-Bcos.