Clam 1607 fix benign overflow & leaks loading PDB & WDB databases #530
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ragusaa
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This PR replaces #462 |
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From offline conversations: this PR is presently held up because the cleanup code added is slow and is causing timeouts in the test environment. @ragusaa is working on finding a faster way to track those pointers for cleanup. |
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With exception to these minor changes requested, this all looks really great. It went through the test pipelines nicely. I used the internal-fuzz-corpus PR to verify that it resolves CLAM-1607 and the related ones (1642, 1649, 1653) and with manual testing, confirmed that 1691 is resolved as well.
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Just rebased for you to same some effort, since I did it for testing locally. |
There is a possible overflow read when loading PDB and WDB phishing signatures. This issue is not a vulnerability. Changed const char pointers to uint8_t pointers when they are to be used with data, as well as removing asserts and adding additional error checking. Thank you Michał Dardas for reporting this issue.
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Fixes a benign overflow loading PDB or WDB databases, reported by Michał Dardas.
This fix also resolves:
This commit also fixes a minor leak of pattern matching trans nodes that was observed when testing with the MPOOL module disabled.
The fix changed
const charpointers touint8_tpointers when they are to be used with data, as well as removing asserts and adding additional error checking.