Ledger Discloses Security Vulnerability Allowing Signature Parameter Tampering

iconChainthink
Share
AI summary iconSummary
Ledger disclosed a blockchain security vulnerability that could allow a host to inject APDU commands before screen confirmation, resulting in a discrepancy between the displayed data and the signed parameters. The issue resides in the blockchain SDK, not the device’s OS or firmware. A fix is available in SDK v26.6.1. Users must update their apps via Ledger Live, as firmware updates will not resolve the issue. Third-party apps have already been rebuilt using the new SDK.

ChainThink report: On August 28, according to an official announcement, Ledger disclosed a security vulnerability.

This vulnerability allows the host to inject new APDU commands before screen confirmation is complete, causing a mismatch between what is displayed on the device and the final signing parameters, potentially leading users to unknowingly sign altered paths, amounts, or addresses.

The vulnerability exists at the application SDK level; the device's operating system and firmware are not affected. The fix has been released with SDK version 26.6.1; users must update the relevant applications via Ledger Live, as upgrading the firmware alone will not resolve the issue.

Third-party developers have rebuilt the application using the new SDK.

Source:Show original
Disclaimer: The information on this page may have been obtained from third parties and does not necessarily reflect the views or opinions of KuCoin. This content is provided for general informational purposes only, without any representation or warranty of any kind, nor shall it be construed as financial or investment advice. KuCoin shall not be liable for any errors or omissions, or for any outcomes resulting from the use of this information. Investments in digital assets can be risky. Please carefully evaluate the risks of a product and your risk tolerance based on your own financial circumstances. For more information, please refer to our Terms of Use and Risk Disclosure.