CVE-2019-16216
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.
Zulip server是美国Zulip公司的一款开源的团队聊天应用程序。 Zulip server 2.0.5之前版本中存在跨站脚本漏洞。该漏洞源于WEB应用缺少对客户端数据的正确验证。攻击者可利用该漏洞执行客户端代码。
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I. Basic Information for CVE-2019-16216
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Zulip server before 2.0.5 incompletely validated the MIME types of uploaded files. A user who is logged into the server could upload files of certain types to mount a stored cross-site scripting attack on other logged-in users. On a Zulip server using the default local uploads backend, the attack is only effective against browsers lacking support for Content-Security-Policy such as Internet Explorer 11. On a Zulip server using the S3 uploads backend, the attack is confined to the origin of the configured S3 uploads hostname and cannot reach the Zulip server itself.
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
Zulip server 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zulip server是美国Zulip公司的一款开源的团队聊天应用程序。 Zulip server 2.0.5之前版本中存在跨站脚本漏洞。该漏洞源于WEB应用缺少对客户端数据的正确验证。攻击者可利用该漏洞执行客户端代码。
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 | - |
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II. Public POCs for CVE-2019-16216
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2019-16216 (1)
-
https://github.com/zulip/zulip/commit/1195841dfb9aa26b3b0dabc6f05d72e4af25be3e x_refsource_CONFIRM
Security Blog Posts for CVE-2019-16216 (1)
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https://blog.zulip.org/2019/09/11/zulip-server-2-0-5-security-release/ x_refsource_CONFIRM
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IV. Related Vulnerabilities
V. Comments for CVE-2019-16216
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