Description (CNA)
Data::SortedSet::Shared versions before 0.03 for Perl allow an out-of-bounds read via unvalidated node indices in the rank and min/max query paths. The attach-time validator ss_validate_header bounds only the root index against the node pool (node_capacity). The order-statistics and min/max queries then follow children[], leftmost and rightmost node indices read raw from the mmap'd segment without bounding them against node_capacity. A full structural check (ss_validate_tree) exists but runs only via an explicit validate method, not on attach. A local peer that can write the backing file can leave the header valid while poisoning the tree links, so the next rank, min or max query dereferences an out-of-bounds node index, reading adjacent memory or crashing the process.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| EGOR / Data::SortedSet::Shared | affected 0 before 0.03 |
CWE
CWE-125
References
- https://metacpan.org/release/EGOR/Data-SortedSet-Shared-0.03/diff/EGOR/Data-SortedSet-Shared-0.02#sortedset.h
- https://metacpan.org/release/EGOR/Data-SortedSet-Shared-0.03/changes
ADP enrichment
No English description supplied.
No references supplied.