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CVE-2020-26277— Arbitrary read/write in DBdeployer

Quick assessment

Affected
datacharmer dbdeployer
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.

Datacharmer Dbdeployer是Datacharmer个人开发者的一个基于Go语言的用于高效部署Mysql数据库的软件。 DBdeployer 1.58.2之前版本存在安全漏洞，该漏洞源于用户解包tarball时可能会使用恶意打包的tarball，其中包含指向目标外部文件的符号链接。在这种情况下，攻击者可利用该漏洞可以诱导dbdeployer写入系统文件，从而改变计算机防御。

CVSS 6.1 · Medium EPSS 1.20% · P67

Possible ATT&CK Techniques 1 AI

T1036.004 · Masquerade Task or Service
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I. Basic Information for CVE-2020-26277

Vulnerability Information
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Vulnerability Title
Arbitrary read/write in DBdeployer
Source: CVE Program / CVE List V5
Vulnerability Description
DBdeployer is a tool that deploys MySQL database servers easily. In DBdeployer before version 1.58.2, users unpacking a tarball may use a maliciously packaged tarball that contains symlinks to files external to the target. In such scenario, an attacker could induce dbdeployer to write into a system file, thus altering the computer defenses. For the attack to succeed, the following factors need to contribute: 1) The user is logged in as root. While dbdeployer is usable as root, it was designed to run as unprivileged user. 2) The user has taken a tarball from a non secure source, without testing the checksum. When the tarball is retrieved through dbdeployer, the checksum is compared before attempting to unpack. This has been fixed in version 1.58.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
Source: CVE Program / CVE List V5
Vulnerability Title
Datacharmer Dbdeployer 后置链接漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Datacharmer Dbdeployer是Datacharmer个人开发者的一个基于Go语言的用于高效部署Mysql数据库的软件。 DBdeployer 1.58.2之前版本存在安全漏洞，该漏洞源于用户解包tarball时可能会使用恶意打包的tarball，其中包含指向目标外部文件的符号链接。在这种情况下，攻击者可利用该漏洞可以诱导dbdeployer写入系统文件，从而改变计算机防御。
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
datacharmer dbdeployer < 1.58.2 -

II. Public POCs for CVE-2020-26277

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III. Intelligence Information for CVE-2020-26277

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Patches & Fixes for CVE-2020-26277 (1)

Vendor Advisories for CVE-2020-26277 (1)

IV. Related Vulnerabilities

Same weakness: CWE-59

V. Comments for CVE-2020-26277

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