CVE-2024-37153: evmos — Exploit & Fix

Description

Evmos is the Ethereum Virtual Machine (EVM) Hub on the Cosmos Network. There is an issue with how to liquid stake using Safe which itself is a contract. The bug only appears when there is a local state change together with an ICS20 transfer in the same function and uses the contract's balance, that is using the contract address as the sender parameter in an ICS20 transfer using the ICS20 precompile. This is in essence the "infinite money glitch" allowing contracts to double the supply of Evmos after each transaction.The issue has been patched in versions >=V18.1.0.

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CVSS v3.1 Score

7.5

HIGH

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

Weakness Type (CWE)

CWE-670 CWE-670

Affected Products

Vendor	Product	Versions
evmos	evmos	< 18.1.0

References

Advisories & Patches

https://github.com/evmos/evmos/commit/478b7a62e7af57a70cf3a01126c7f5a89bee69d7 https://github.com/evmos/evmos/security/advisories/GHSA-xgr7-jgq3-mhmc https://github.com/evmos/evmos/commit/478b7a62e7af57a70cf3a01126c7f5a89bee69d7 https://github.com/evmos/evmos/security/advisories/GHSA-xgr7-jgq3-mhmc

Exploits

https://github.com/evmos/evmos/security/advisories/GHSA-xgr7-jgq3-mhmc https://github.com/evmos/evmos/security/advisories/GHSA-xgr7-jgq3-mhmc

Frequently Asked Questions

What is CVE-2024-37153? +

Evmos is the Ethereum Virtual Machine (EVM) Hub on the Cosmos Network. There is an issue with how to liquid stake using Safe which itself is a contract. The bug only appears when there is a local state change together with an ICS20 transfer in the same function and uses the contract's balance, that is using the contract address as the sender parameter in an ICS20 transfer using the ICS20 precompile. This is in essence the "infinite money glitch" allowing contracts to double the supply of Evmos after each transaction.The issue has been patched in versions >=V18.1.0. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2024-37153? +

CVE-2024-37153 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-37153? +

CVE-2024-37153 affects products from evmos, specifically: evmos. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-37153? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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