Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2021-43839— Drainage of FeeCollector's Block Transaction Fees

Quick assessment

Affected
crypto-org-chain cronos
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cronos是一个 Crypto.org Evm 链。旨在大规模扩展 DeFi 生态系统。 Cronos 存在安全漏洞，该漏洞源于在运行v0.6.5之前版本的Cronos节点中，可以通过发送定制的MsgEthereumTx从Cosmos SDK的FeeCollector收取当前块的交易费用。此问题已在Cronos v0.6.5中修复。没有经过测试的变通方法。建议所有验证器节点操作符尽可能早地升级到Cronos v0.6.5。

CVSS 7.5 · High EPSS 1.31% · P68
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2021-43839

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Drainage of FeeCollector's Block Transaction Fees
Source: CVE Program / CVE List V5
Vulnerability Description
Cronos is a commercial implementation of a blockchain. In Cronos nodes running versions before v0.6.5, it is possible to take transaction fees from Cosmos SDK's FeeCollector for the current block by sending a custom crafted MsgEthereumTx. This problem has been patched in Cronos v0.6.5. There are no tested workarounds. All validator node operators are recommended to upgrade to Cronos v0.6.5 at their earliest possible convenience.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
控制流实现总是不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Cronos 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cronos是一个 Crypto.org Evm 链。旨在大规模扩展 DeFi 生态系统。 Cronos 存在安全漏洞，该漏洞源于在运行v0.6.5之前版本的Cronos节点中，可以通过发送定制的MsgEthereumTx从Cosmos SDK的FeeCollector收取当前块的交易费用。此问题已在Cronos v0.6.5中修复。没有经过测试的变通方法。建议所有验证器节点操作符尽可能早地升级到Cronos v0.6.5。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
crypto-org-chain cronos < 0.6.5 -

II. Public POCs for CVE-2021-43839

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2021-43839

请登录查看更多情报信息。

Patches & Fixes for CVE-2021-43839 (2)

Vendor Advisories for CVE-2021-43839 (1)

IV. Related Vulnerabilities

Same product: cronos
Same weakness: CWE-670

V. Comments for CVE-2021-43839

No comments yet

Leave a comment