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CVE-2020-29509

Quick assessment

Affected
Golang Go
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.

Google Go encoding是美国Google公司的一个基于Go语言为数据提供多种形式编码的代码库。 Go encoding/xml package 存在安全漏洞，该漏洞源于在标记化往返过程中没有正确地保留属性名称空间前缀的语义，这使得攻击者可利用该漏洞可以在受影响的下游应用程序的不同处理阶段以冲突的方式创建输入。

CVSS 9.8 · Critical EPSS 2.10% · P81

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2020-29509

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The encoding/xml package in Go (all versions) does not correctly preserve the semantics of attribute namespace prefixes during tokenization round-trips, which allows an attacker to craft inputs that behave in conflicting ways during different stages of processing in affected downstream applications.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入的错误解释
Source: CVE Program / CVE List V5
Vulnerability Title
Google Go encoding 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Google Go encoding是美国Google公司的一个基于Go语言为数据提供多种形式编码的代码库。 Go encoding/xml package 存在安全漏洞，该漏洞源于在标记化往返过程中没有正确地保留属性名称空间前缀的语义，这使得攻击者可利用该漏洞可以在受影响的下游应用程序的不同处理阶段以冲突的方式创建输入。
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
Golang Go All versions -

II. Public POCs for CVE-2020-29509

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III. Intelligence Information for CVE-2020-29509

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Vendor Advisories for CVE-2020-29509 (1)

Other References for CVE-2020-29509 (1)

Same Patch Batch · Golang · 2020-12-14 · 3 CVEs total

CVE-2020-29510 9.8 CRITICAL Google Golang 安全漏洞
CVE-2020-29511 9.8 CRITICAL Google Go encoding 安全漏洞

IV. Related Vulnerabilities

Same product: Go
Same vendor: Golang
Same weakness: CWE-115

V. Comments for CVE-2020-29509

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