CVE-2026-111439
>_ Opis
Tłumaczenie automatyczne – może zawierać nieścisłości.
Otwórz openGauss-server src/common/backend/utils/adt/genfile.cpp 模块中, 内置函数 pg_read_binary_file_blocks()存在权限校验逻辑缺陷。该函数在入口处仅校验了起始块号(startBlock Num)和块数量(blockCount)的范围,随后直接调用底层文件读取例程ReadBinaryFileBlocksFirstCall()。该底层例程仅执行了路径规范化检查以及针对 ..路径遍历和数据目录边界的基本检查,缺失了对调用者数据库权限(如 WYBIERZ权限)的校验。此外,辅助函数 is_row_data_file()也仅用于识别文件形态,未包含权限检查。因此,任何拥有普通数据库连接权限的用户,只要能够通过pg_relation_filepath() 等函数获取到目标表的底层关系文件路径(例如压缩数据的 _compress文件路径),即可无需具备该表的 SELECT 权限,直接读取表数据的二进制块。
此漏洞影响此前3.0.0到6.0.0间的所有版本及补丁版,并在7.0.0-LTS版本修复。修复patch详见:h ttps://gitcode.com/opengauss/openGauss-server/pull/9374.
>_ Słabości (CWE)
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