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CVE-2020-7928— Improper neutralization of null byte leads to read overrun

Quick assessment

Affected
MongoDB Inc. MongoDB Server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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触发读溢出，并通过发出特殊设计的查询访问任意内存。以下产品及版本受到影响：4.5.1之前的MongoDB服务器v4.5版本;4.4.1之前的v4.4版本;4.2.9之前的v4.2版本;4.0.20之前的v4.0版本;3.6.20之前的v3.6版本。

CVSS 6.5 · Medium EPSS 1.44% · P72

Possible ATT&CK Techniques 1 AI

T1210 · Exploitation of Remote Services
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I. Basic Information for CVE-2020-7928

Vulnerability Information
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Vulnerability Title
Improper neutralization of null byte leads to read overrun
Source: CVE Program / CVE List V5
Vulnerability Description
A user authorized to perform database queries may trigger a read overrun and access arbitrary memory by issuing specially crafted queries. This issue affects MongoDB Server v4.4 versions prior to 4.4.1; MongoDB Server v4.2 versions prior to 4.2.9; MongoDB Server v4.0 versions prior to 4.0.20 and MongoDB Server v3.6 versions prior to 3.6.20.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
空字节或NULL字符转义处理不恰当
Source: CVE Program / CVE List V5
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触发读溢出，并通过发出特殊设计的查询访问任意内存。以下产品及版本受到影响：4.5.1之前的MongoDB服务器v4.5版本;4.4.1之前的v4.4版本;4.2.9之前的v4.2版本;4.0.20之前的v4.0版本;3.6.20之前的v3.6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 4.4 ~ 4.4.1 -

II. Public POCs for CVE-2020-7928

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III. Intelligence Information for CVE-2020-7928

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Other References for CVE-2020-7928 (1)

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-2018-20802 6.5 MEDIUM Post-auth queries on compound index may crash mongod
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

IV. Related Vulnerabilities

Same product: MongoDB Server
Same vendor: MongoDB Inc.
Same weakness: CWE-158

V. Comments for CVE-2020-7928

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