LedgerHQ/app-ethereum
Apr 2026 – Apr 2026
1 Month active
Languages Used
C
Technical Skills
C programmingblockchain developmentembedded systemssecuritysecurity programming
Cerberus
PROFILE
Cerberus
Worked on security hardening and memory safety improvements for the LedgerHQ/app-ethereum repository, focusing on critical bug fixes rather than new feature development. Addressed a vulnerability in the blind-signing flow by correcting a faulty dataPresent flag assignment, which previously allowed bypass attempts with single-byte calldata. Enhanced memory safety by introducing explicit length checks during token address comparisons, preventing out-of-bounds reads in the amount-join flow. Collaborated closely with security researchers, applying C programming expertise and low-level defensive programming techniques. These efforts reduced the attack surface, improved transaction reliability, and ensured adherence to established security standards in blockchain and embedded systems development.
Overall Statistics
Feature vs Bugs
0%Features
Repository Contributions
2Total
Bugs
2
Commits
2
Features
0
Lines of code
8
Activity Months1
Your Network
160 peopleWork History
April 2026
2 Commits
Apr 1, 2026April 2026 monthly summary for LedgerHQ/app-ethereum focusing on security hardening and memory safety improvements. Key features delivered include critical bug fixes that strengthen the blind-signing flow against bypass attempts and enhancements to memory safety during token address comparisons. Major bugs fixed encompass: (1) Security: Blind-signing gate bypass for single-byte calldata 0x00, resolved by removing a faulty dataPresent flag assignment that incorrectly marked data as not present; (2) Memory Safety: Prevent out-of-bounds reads in token address comparisons by adding a length check in the amount-join flow. These changes reduce attack surface, improve correctness, and lower the risk of exploitation in critical transaction paths. Technologies and skills demonstrated include security-focused code review, low-level defensive programming, and collaborative development with security researchers (co-authored-by credits). Overall impact: strengthened core security properties, improved reliability of transaction handling, and enhanced confidence for users and auditors. Accomplishments: efficient identification and remediation of high-severity issues, clear traceability with commits, and adherence to established security standards.
2 Commits
Apr 1, 2026April 2026 monthly summary for LedgerHQ/app-ethereum focusing on security hardening and memory safety improvements. Key features delivered include critical bug fixes that strengthen the blind-signing flow against bypass attempts and enhancements to memory safety during token address comparisons. Major bugs fixed encompass: (1) Security: Blind-signing gate bypass for single-byte calldata 0x00, resolved by removing a faulty dataPresent flag assignment that incorrectly marked data as not present; (2) Memory Safety: Prevent out-of-bounds reads in token address comparisons by adding a length check in the amount-join flow. These changes reduce attack surface, improve correctness, and lower the risk of exploitation in critical transaction paths. Technologies and skills demonstrated include security-focused code review, low-level defensive programming, and collaborative development with security researchers (co-authored-by credits). Overall impact: strengthened core security properties, improved reliability of transaction handling, and enhanced confidence for users and auditors. Accomplishments: efficient identification and remediation of high-severity issues, clear traceability with commits, and adherence to established security standards.
April 2026
Activity
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Quality Metrics
Correctness100.0%
Maintainability90.0%
Architecture90.0%
Performance90.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
C
Technical Skills
C programmingblockchain developmentembedded systemssecuritysecurity programming
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