CVE-2025-47436

Apache ORC: Potential Heap Buffer Overflow during C++ LZO Decompression

State: Published
Severity: 6.0 Medium
Published: May 14, 2025
Updated: May 14, 2025
Reserved: May 7, 2025

Description

Heap-based Buffer Overflow vulnerability in Apache ORC.

A vulnerability has been identified in the ORC C++ LZO decompression logic, where specially crafted malformed ORC files can cause the decompressor to allocate a 250-byte buffer but then attempts to copy 295 bytes into it. It causes memory corruption.

This issue affects Apache ORC C++ library: through 1.8.8, from 1.9.0 through 1.9.5, from 2.0.0 through 2.0.4, from 2.1.0 through 2.1.1.

Users are recommended to upgrade to version 1.8.9, 1.9.6, 2.0.5, and 2.1.2, which fix the issue.

Scores

CVSS	Score	Vector	Source
4.0	6.0 Medium	CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:A/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H/S:N/RE:M/U:Amber	apache

Weaknesses

CWE-122 Heap-based Buffer Overflow

Affected Products

Product	Versions
Apache ORCApache Software Foundation	1.8.8 and earlierAffected 1.9.0 through 1.9.5Affected 2.0.0 through 2.0.4Affected 2.1.0 through 2.1.1Affected

References

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