CVE-2021-28834
Quick assessment
Affected
n/a n/a
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.
Thomas Leitner kramdown是 （Thomas Leitner）开源的一个应用程序。提供一个快速的纯Ruby Markdown超集转换器，使用严格的语法定义并支持几个常用扩展。 Kramdown before 2.3.1 存在安全漏洞，该漏洞源于Kramdown没有将Rouge格式化器限制为Rouge:: formatters名称空间。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-28834
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Kramdown before 2.3.1 does not restrict Rouge formatters to the Rouge::Formatters namespace, and thus arbitrary classes can be instantiated.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Thomas Leitner kramdown 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Thomas Leitner kramdown是 （Thomas Leitner）开源的一个应用程序。提供一个快速的纯Ruby Markdown超集转换器，使用严格的语法定义并支持几个常用扩展。 Kramdown before 2.3.1 存在安全漏洞，该漏洞源于Kramdown没有将Rouge格式化器限制为Rouge:: formatters名称空间。
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 |
|---|---|---|---|---|
| - | n/a | n/a | - |
|
II. Public POCs for CVE-2021-28834
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2021-28834 (2)
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https://github.com/gettalong/kramdown/pull/708 x_refsource_MISC
Vendor Advisories for CVE-2021-28834 (1)
Mailing List Discussions for CVE-2021-28834 (3)
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S3BBLUIDCUUR3NEE4NJLOCCAV3ALQ3O6/ vendor-advisory x_refsource_FEDORA
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJCJVYHPY6LNUFM6LYZIAUIYOMVT5QGV/ vendor-advisory x_refsource_FEDORA
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SYOLQKFL6IJCQLBXV34Z4TI4O54GESPR/ vendor-advisory x_refsource_FEDORA
Other References for CVE-2021-28834 (1)
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https://github.com/gettalong/kramdown/compare/REL_2_3_0...REL_2_3_1 x_refsource_MISC
Same Patch Batch · n/a · 2021-03-19 · 36 CVEs total
| CVE-2021-28831 | 7.5 HIGH | BusyBox 安全漏洞 |
| CVE-2021-27519 | FUDForum 跨站脚本漏洞 | |
| CVE-2021-25278 | FTAPI SecuTransfer 跨站脚本漏洞 | |
| CVE-2021-26991 | Netapp NetApp OnCommand Cloud Manager 安全漏洞 | |
| CVE-2021-26992 | Netapp NetApp OnCommand Cloud Manager 安全漏洞 | |
| CVE-2021-26990 | Netapp NetApp OnCommand Cloud Manager 安全漏洞 | |
| CVE-2021-20077 | Tenable Network Security Nessus 安全漏洞 | |
| CVE-2019-10127 | PostgreSQL 访问控制错误漏洞 | |
| CVE-2021-27520 | FUDForum 跨站脚本漏洞 | |
| CVE-2021-27506 | ClamAV 安全漏洞 | |
| CVE-2019-10128 | PostgreSQL 访问控制错误漏洞 | |
| CVE-2019-10196 | Nathan Rajlich node-http-proxy-agent 安全漏洞 | |
| CVE-2019-10225 | Red Hat OpenShift Container Platform 安全漏洞 | |
| CVE-2019-14828 | Moodle 授权问题漏洞 | |
| CVE-2019-14829 | Moodle 安全漏洞 | |
| CVE-2019-14830 | Moodle 输入验证错误漏洞 | |
| CVE-2019-14831 | Moodle 输入验证错误漏洞 | |
| CVE-2019-10200 | Red Hat OpenShift Container Platform 访问控制错误漏洞 | |
| CVE-2021-25290 | Pillow 缓冲区错误漏洞 | |
| CVE-2021-27928 | MariaDB 代码注入漏洞 |
Showing top 20 of 36 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2021-28834
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