[ c ] Fix match_fingerprint() timing side-channel
Open-source bounty · GitHub (bounty labels) · open as of 17 Oct 2026
- Amount as listed
- $1 fixed “$1” — quoted from GitHub (bounty labels)
- Platform
- GitHub (bounty labels)
- Kind of work
- Open-source bounty · Engineering
- Open to
- not stated by the platform
- Deadline
- not stated by the platform
- Status
- Open
- Checked
- 17 Oct 2026, 18:22 UTC
What the listing says
- match fingerprint() on line 78 uses memcmp() for FINGERPRINT LEN (32) byte comparison, leaking how many leading bytes match via timing; an attacker measuring validate chain() response times at line 172 can brute-force a pinned fingerprint one byte at a time - Replace memcmp() with CRYPTO memcmp() from OpenSSL which r
Excerpt we recorded when we checked: Etiketten: 💎 Bounty, bug, good first issue, help wanted, 💎 Bounty, $1, AI Agent friendly, AI only allowed - no humans
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