openGauss存在非法内存访问导致DoS漏洞
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| openGauss-server | openGauss-server-7.0.0-RC2 | affected |
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| openGauss-server | openGauss-server-7.0.0-RC1 | affected |
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| openGauss-server | openGauss-server-7.0.0-RC3 | unaffected |
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No data.
No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Opengauss-server | Opengauss-server-7.0.0-rc1 |
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| Opengauss-server | Opengauss-server-7.0.0-rc2 |
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| Opengauss-server | Opengauss-server-7.0.0-rc3 |
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No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.367% probability within 30 days)
| Link | Providers |
|---|---|
| https://gitcode.com/opengauss/openGauss-server/pull/8877 |
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Opengauss-server
Opengauss-server opengauss-server-7.0.0-rc1 Opengauss-server opengauss-server-7.0.0-rc2 Opengauss-server opengauss-server-7.0.0-rc3 |
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| Vendors & Products |
Opengauss-server
Opengauss-server opengauss-server-7.0.0-rc1 Opengauss-server opengauss-server-7.0.0-rc2 Opengauss-server opengauss-server-7.0.0-rc3 |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| Description | openGauss 在处理带 NLS 参数的 to_timestamp 调用时,to_timestamp_with_fmt_nls() 会将 nls_fmt_str 保存到 u_sess->parser_cxt.nls_fmt_str。在 seqscan + sort 执行路径下,该字符串原本被分配在 SeqScan 的表达式上下文中;当 SeqScan 完成后,该内存上下文会被 reset,但后续结果输出阶段 timestamp_out() 仍会通过 CheckNlsFormat() 访问 u_sess->parser_cxt.nls_fmt_str,导致访问已释放内存。攻击者在具备数据库 SQL 执行权限的情况下,可构造特定 to_timestamp(..., ..., nlsparam) 查询触发 heap-use-after-free。在 ASan/Memcheck 环境下表现为数据库服务退出;在实际运行环境中可能造成后端进程异常退出,影响数据库服务可用性,形成拒绝服务风险。该问题在openGauss-server-7.0.0-RC1版本和openGauss-server-7.0.0-RC2版本存在,目前已在openGauss-server-7.0.0-RC3版本修复。由于 openGauss-server-7.0.0-RC1版本和openGauss-server-7.0.0-RC2均为创新版本,不会发布针对性补丁包,涉及版本升级至 openGauss-server-7.0.0-RC3或更新版本即可。 | |
| Title | openGauss存在非法内存访问导致DoS漏洞 | |
| Weaknesses | CWE-416 | |
| References |
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| Metrics |
cvssV3_1
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