[tor-bugs] #24247 [Core Tor/Tor]: Fuzzing: check_signature mock can be fooled by a really short key.
Tor Bug Tracker & Wiki
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Sat Nov 11 19:36:45 UTC 2017
#24247: Fuzzing: check_signature mock can be fooled by a really short key.
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Reporter: nickm | Owner: nickm
Type: defect | Status: assigned
Priority: Medium | Milestone: Tor: 0.3.2.x-final
Component: Core Tor/Tor | Version:
Severity: Normal | Keywords:
Actual Points: | Parent ID:
Points: | Reviewer:
Sponsor: |
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Our mock function, mock_crypto_pk_public_checksig__nocheck, fails to
behave properly when it gets a ridiculously short key: the caller will
have allocated a small amount, but we'll write a 20-byte digest.
This is causing a false positive on OSS-Fuzz.
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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/24247>
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