check_hba_replication 认证与访问控制绕过
Summary
| CVE | CVE-2026-111438 |
|---|---|
| State | PUBLISHED |
| Assigner | openGauss |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-10-19 09:17:07 UTC |
| Updated | 2026-10-19 20:56:36 UTC |
| Description | 在 openGauss-server 的 src/common/backend/libpq/hba.cpp 中，复制连接认证存在访问控制绕过。hba_getauthmethod() 在处理 HADR/SW 复制发送方时，不要求 is_node_internal_connection()，直接调用 check_hba_replication()。check_hba_replication() 仅按 replication 标记做弱匹配，缺少普通 check_hba() 中的远程 trust 禁止等完整校验。因此，非内部网络的 HADR/SW 复制连接可绕过内部连接限制和完整 pg_hba 策略完成认证，进而通过复制协议读取备份与日志数据。 此问题随 HADR 复制发送方绕过内部连接校验进入代码，自 3.0.0 起即存在。受影响版本包括 3.0.x、3.1.x、5.0.x、5.1.0、6.0.x，以及 7.0.0-RC1、7.0.0-RC2、7.0.0-RC3。该问题已在 7.0.0-LTS版本修复，通过要求 HADR/SW 复制发送方必须经过 is_node_internal_connection 校验，使外部复制连接改走普通 check_hba() 并触发禁止远程 trust 策略。修复pr见https://gitcode.com/opengauss/openGauss-server/pull/9757。 |
Risk And Classification
Primary CVSS: v3.1 6.5 MEDIUM from a1a479f7-907b-4ae8-a999-9148cadc9224
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
EPSS: 0.003610000 probability, percentile 0.284070000 (date 2026-10-19)
Problem Types: CWE-288 | CWE-288 CWE-288 Authentication bypass using an alternate path or channel
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | a1a479f7-907b-4ae8-a999-9148cadc9224 | Secondary | 6.5 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N |
| 3.1 | CNA | CVSS | 6.5 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
HighUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | OpenGauss-server | OpenGauss-server | unaffected 7.0.0-LTS | openEuler, Centos |
| CNA | OpenGauss-server | OpenGauss-server | affected 3.0.0-3.0.5 | openEuler, Centos |
| CNA | OpenGauss-server | OpenGauss-server | affected 3.1.0-3.1.1 | openEuler, Centos |
| CNA | OpenGauss-server | OpenGauss-server | affected 5.0.0-RC1 | openEuler, Centos |
| CNA | OpenGauss-server | OpenGauss-server | affected 5.0.0-5.0.3 | openEuler, Centos |
| CNA | OpenGauss-server | OpenGauss-server | affected 6.0.0-RC1 | openEuler, Centos |
| CNA | OpenGauss-server | OpenGauss-server | affected 6.0.0-6.0.6 | openEuler, Centos |
| CNA | OpenGauss-server | OpenGauss-server | affected 7.0.0-RC1, 7.0.0-RC2, 7.0.0-RC3 | openEuler, Centos |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| gitcode.com/opengauss/openGauss-server/pull/9757 | a1a479f7-907b-4ae8-a999-9148cadc9224 | gitcode.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.