Vulnerability · Published May 14, 2025 · Assigned by apache
CVE-2025-47436Apache ORC: Potential Heap Buffer Overflow during C++ LZO Decompression
Medium 6.0
In plain English
A medium-severity heap buffer overflow in Apache ORC from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache ORC | 0 – through 1.8.81.9.0 – through 1.9.52.0.0 – through 2.0.42.1.0 – through 2.1.1 |
Weakness: CWE-122 · Vector: 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