[CASSANDRA-14858] Validate range tombstones and clustering order on the write path

• Type: Bug
• Status: Open
• Priority: Normal
• Resolution: Unresolved
• Component/s: Legacy/Local Write-Read Paths
• Severity: Normal
• Assignee: Blake Eggleston
• Reporter: Blake Eggleston

Authors

Blake Eggleston

• Created: 29/Oct/18 23:21
• Updated: 16/Apr/19 09:29

Description

Some fuzz testing I've been doing uncovered some situations where invalid tombstones could be written and/or unfiltereds could be written to sstables out of clustering order. Both of these caused pretty severe database breakage. Although cql statement logic should (in theory) prevent users from triggering these bugs in normal use, it's possible there's an edge case somewhere that could write data like this. We should add some validation in the lower levels of the storage layer to protect it from bugs / malicious input from the higher levels.