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Moderate 56 Bitcoin

fix ton wallet bug

Public commit record

What the developer wrote

Authored by ww3512687

28/100 · Opaque
fix ton wallet bug
✓ Subject identifies a change! No meaningful explanatory body! Opaque security-relevant change
The short version

What changed, and why it matters

This firmware update fixes a bug in how the Keystone 3 hardware wallet handles TON (The Open Network) wallet setup. The changes remove several safety checks and replace safer string/buffer functions with less safe ones, while also restructuring how TON entropy and seed generation errors are handled. The commit title says it fixes a TON wallet bug, but the diff itself mostly removes defensive coding patterns rather than adding them. Without more context, it is unclear whether the change fully resolves the underlying issue or introduces new risks.

Recommended action

Treat this commit as a functional bug fix that reduces defensive coding. The project should review the removed safety checks—especially the dropped entropy-length validation and the unsafe string copies—and consider reintroducing bounded copies and error checks. Users relying on TON wallets should ensure they are on the latest firmware and monitor Keystone's release notes for any security advisories.

Security signals we found

01

Removal of entropy length validation in TON mnemonic import

02

Replacement of strncpy_s/strcpy_s with strcpy in multiple paths

03

Removal of NULL checks after cJSON_Parse and other operations

04

Inline expansion of previously abstracted crypto derivation helpers

05

Removal of error-code checks on flash erase operations

06

Removal of master-key derivation error handling in TempAccountPublicInfo

07

Changes to TON chain handling in public key derivation and wallet management

Risk score

Why this scored 56/100

Our methodology →
Potential impact 18/30
Exploitability 12/25
Stealth signal 8/15
Affected reach 10/15
Confidence 5/10
Evidence quality 3/5
Human-validated context

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