CVE-2021-20764
Quick assessment
Affected
Cybozu, Inc. Cybozu Garoon
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.
Cybozu Garoon是日本才望子（Cybozu）公司的一套门户型OA办公系统。该系统提供门户、E-mail、书签、日程安排、公告栏、文件管理等功能。 Cybozu Garoon 4.0.0版本至5.0.2版本存在输入验证错误漏洞，该漏洞源于Attaching Files中用户提供的输入验证不足。远程攻击者可利用该漏洞向应用程序发送特制的输入，并获取Attaching Files的数据。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-20764
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Improper input validation vulnerability in Attaching Files of Cybozu Garoon 4.0.0 to 5.0.2 allows a remote attacker to alter the data of Attaching Files.
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
Cybozu Garoon 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cybozu Garoon是日本才望子（Cybozu）公司的一套门户型OA办公系统。该系统提供门户、E-mail、书签、日程安排、公告栏、文件管理等功能。 Cybozu Garoon 4.0.0版本至5.0.2版本存在输入验证错误漏洞，该漏洞源于Attaching Files中用户提供的输入验证不足。远程攻击者可利用该漏洞向应用程序发送特制的输入，并获取Attaching Files的数据。
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 |
|---|---|---|---|---|
| Cybozu, Inc. | Cybozu Garoon | 4.0.0 to 5.0.2 | - |
|
II. Public POCs for CVE-2021-20764
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2021-20764 (1)
-
https://jvn.jp/en/jp/JVN54794245/index.html x_refsource_MISC
Other References for CVE-2021-20764 (1)
-
https://cs.cybozu.co.jp/2021/007206.html x_refsource_MISC
Same Patch Batch · Cybozu, Inc. · 2021-08-18 · 23 CVEs total
| CVE-2021-20763 | Cybozu Garoon 安全漏洞 | |
| CVE-2021-20753 | Cybozu Garoon 跨站脚本漏洞 | |
| CVE-2021-20754 | Cybozu Garoon 输入验证错误漏洞 | |
| CVE-2021-20755 | Cybozu Garoon 安全漏洞 | |
| CVE-2021-20756 | Cybozu Garoon 安全漏洞 | |
| CVE-2021-20757 | Cybozu Garoon 授权问题漏洞 | |
| CVE-2021-20758 | Cybozu Garoon 跨站请求伪造漏洞 | |
| CVE-2021-20759 | Cybozu Garoon 授权问题漏洞 | |
| CVE-2021-20760 | Cybozu Garoon 输入验证错误漏洞 | |
| CVE-2021-20761 | Cybozu Garoon 输入验证错误漏洞 | |
| CVE-2021-20762 | Cybozu Garoon 输入验证错误漏洞 | |
| CVE-2021-20775 | Cybozu Garoon 输入验证错误漏洞 | |
| CVE-2021-20765 | Cybozu Garoon 跨站脚本漏洞 | |
| CVE-2021-20766 | Cybozu Garoon 跨站脚本漏洞 | |
| CVE-2021-20767 | Cybozu Garoon 跨站脚本漏洞 | |
| CVE-2021-20768 | Cybozu Garoon 安全漏洞 | |
| CVE-2021-20769 | Cybozu Garoon 跨站脚本漏洞 | |
| CVE-2021-20770 | Cybozu Garoon 跨站脚本漏洞 | |
| CVE-2021-20771 | Cybozu Garoon 跨站脚本漏洞 | |
| CVE-2021-20772 | Cybozu Garoon 信息泄露漏洞 |
Showing top 20 of 23 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2021-20764
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