Ledger Team to Find Issue in New Nano S Software

Last update's security improvements have affected the amount of device memory
15 February 2019   724

Ledger hardware wallet developers stated that an unforeseen problem was found in software version 1.5.5 for the Nano S model. Improvements in the security context have affected the amount of device memory.

When planning for this update we didn’t anticipate the impact it would have on Ledger Nano S capacity. This was not planned obsolescence, simply put, we messed up. We apologize and we’re committed to making it right.
 

Ledger Team

The project team apologized for the incident and promised to fix the problem during the second quarter of 2019.

The project also announced the addition of Nano S support in the Ledger Live mobile app on Android.

Earlier, researchers at Wallet.fail discovered a number of vulnerabilities in the Trezor and Ledger hardware cryptocurrency wallets. As a result, they were able to conduct a series of successful attacks on wallets during the Chaos Communication Congress in Leipzig.

Ledger to Discover HSM Vulnerability

HSM is an external device designed to store public and private keys used to generate digital signatures and to encrypt data, used by banks, exchanges, etc
10 June 2019   1639

A group of researchers from Ledger identified several vulnerabilities in the Hardware Security Module (HSM) devices, which can be used to extract keys or perform a remote attack to replace the firmware of an HSM device. The problem report is currently available only in French, the English-language report is scheduled to be published in August during the Blackhat USA 2019 conference. HSM is a specialized external device designed to store public and private keys used to generate digital signatures and to encrypt data.

HSM allows you to significantly increase protection, as it completely isolates keys from the system and applications, only by providing an API to perform basic cryptographic primitives implemented on the device side. Typically, HSM is used in areas where you need to provide the highest protection, for example, in banks, cryptocurrency exchanges, certification centers for checking and generating certificates and digital signatures.

The proposed attack methods allow an unauthenticated user to gain complete control over the contents of the HSM, including extracting all the cryptographic keys and administrative credentials stored on the device. The problems are caused by a buffer overflow in the internal PKCS # 11 command handler and an error in the implementation of the cryptographic protection of the firmware, which bypasses the firmware check using the PKCS # 1v1.5 digital signature and initiates loading the own firmware in the HSM.

The name of the manufacturer, the HSM devices of which have vulnerabilities, has not yet been disclosed, but it is argued that the problem devices are used by some large banks and cloud service providers. At the same time it is reported that information about the problems was previously sent to the manufacturer and it has already eliminated vulnerabilities in the fresh firmware update. Independent researchers suggest that the problem may be in the devices of the company Gemalto, which in May released an update to Sentinel LDK with the elimination of vulnerabilities, access to information about which is still closed.