pg_read_binary_file_blocks 缺少初始用户权限校验，普通用户可读取 relation 文件块
在 openGauss-server的 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（startBlockNum）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 SELECT 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：https://gitcode.com/opengauss/openGauss-server/pull/9374。
CVE-2026-111439
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-111439
openGauss-server
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "openGauss-server",
"product": "openGauss-server",
"versions": [
{
"status": "unaffected",
"version": "7.0.0-LTS"
},
{
"status": "affected",
"version": "3.0.0-3.0.5"
},
{
"status": "affected",
"version": "3.1.0-3.1.1"
},
{
"status": "affected",
"version": "5.0.0-RC1"
},
{
"status": "affected",
"version": "5.0.0-5.0.3"
},
{
"status": "affected",
"version": "5.1.0"
},
{
"status": "affected",
"version": "6.0.0-RC1"
},
{
"status": "affected",
"version": "6.0.0-6.0.6"
},
{
"status": "affected",
"version": "7.0.0-RC1, 7.0.0-RC2, 7.0.0-RC3"
}
],
"platforms": [
"openEuler Centos"
],
"collectionURL": "https://opengauss.org/zh/download/archive/?version=7.0.0%20(LTS)",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-111439
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #39074 · Revision 1
- Added to Heist Feed
- Publisher date