CVE-2018-20802— Post-auth queries on compound index may crash mongod
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I. Basic Information for CVE-2018-20802
Vulnerability Information
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Vulnerability Title
Post-auth queries on compound index may crash mongod
Source: NVD (National Vulnerability Database)
Vulnerability Description
A user authorized to perform database queries may trigger denial of service by issuing specially crafted queries with compound indexes affecting QueryPlanner. This issue affects MongoDB Server v3.6 versions prior to 3.6.9 and MongoDB Server v4.0 versions prior to 4.0.3.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
未预期的状态编码或返回值
Source: NVD (National Vulnerability Database)
Vulnerability Title
Mongodb Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mongodb Server是美国Mongodb公司的一套开源的NoSQL数据库。该数据库提供面向集合的存储、动态查询、数据复制及自动故障转移等功能。 MongoDB Server 存在安全漏洞，该漏洞源于被授权执行数据库查询的用户可能会发出特殊的、带有影响QueryPlanner的复合索引的查询，从而触发服务拒绝。以下产品及版本受到影响：MongoDB Server v3.6版本至3.6.9版本, v4.0版本至4.0.3版本.
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| MongoDB Inc. | MongoDB Server | 3.6 ~ 3.6.9 | - |
II. Public POCs for CVE-2018-20802
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://jira.mongodb.org/browse/SERVER-36993x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2018-20802
Same Patch Batch · MongoDB Inc. · 2020-11-23 · 12 CVEs total
| CVE-2020-7927 | 8.1 HIGH | Potential privilege escalation in Ops Manager API |
| CVE-2020-7925 | 7.5 HIGH | Denial of Service when processing malformed Role names |
| CVE-2018-20803 | 6.5 MEDIUM | Infinite loop in aggregation expression |
| CVE-2018-20804 | 6.5 MEDIUM | Invariant failure in applyOps |
| CVE-2018-20805 | 6.5 MEDIUM | Invariant with $elemMatch |
| CVE-2019-20923 | 6.5 MEDIUM | Crash while handling internal Javascript exception types |
| CVE-2019-20924 | 6.5 MEDIUM | Invariant in IndexBoundsBuilder |
| CVE-2019-2392 | 6.5 MEDIUM | $mod can result in undefined behavior |
| CVE-2019-2393 | 6.5 MEDIUM | Crash while joining collections with $lookup |
| CVE-2020-7926 | 6.5 MEDIUM | Specific query can cause a DoS against MongoDB Server |
| CVE-2020-7928 | 6.5 MEDIUM | Improper neutralization of null byte leads to read overrun |
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