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CVE-2020-26234— Disabled Hostname Verification in OpenCast

Quick assessment

Affected
opencast opencast
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.

Opencast是Opencast组织的一款用于大规模自动视频捕获，管理和分发的直播视频支撑软件。 Opencast 8.9和7.9之前版本存在安全漏洞，该漏洞源于Opencast禁用HTTPS主机名验证，它的HTTP客户端用于Opencast的大部分HTTP请求。主机名验证是使用HTTPS确保提供的证书对主机有效的一个重要部分。禁用它会导致中间人攻击。

CVSS 4.8 · Medium EPSS 0.28% · P19
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I. Basic Information for CVE-2020-26234

Vulnerability Information
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Vulnerability Title
Disabled Hostname Verification in OpenCast
Source: CVE Program / CVE List V5
Vulnerability Description
Opencast before versions 8.9 and 7.9 disables HTTPS hostname verification of its HTTP client used for a large portion of Opencast's HTTP requests. Hostname verification is an important part when using HTTPS to ensure that the presented certificate is valid for the host. Disabling it can allow for man-in-the-middle attacks. This problem is fixed in Opencast 7.9 and Opencast 8.8 Please be aware that fixing the problem means that Opencast will not simply accept any self-signed certificates any longer without properly importing them. If you need those, please make sure to import them into the Java key store. Better yet, get a valid certificate.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
源验证错误
Source: CVE Program / CVE List V5
Vulnerability Title
Opencast 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Opencast是Opencast组织的一款用于大规模自动视频捕获，管理和分发的直播视频支撑软件。 Opencast 8.9和7.9之前版本存在安全漏洞，该漏洞源于Opencast禁用HTTPS主机名验证，它的HTTP客户端用于Opencast的大部分HTTP请求。主机名验证是使用HTTPS确保提供的证书对主机有效的一个重要部分。禁用它会导致中间人攻击。
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
opencast opencast < 7.9 -

II. Public POCs for CVE-2020-26234

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III. Intelligence Information for CVE-2020-26234

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Patches & Fixes for CVE-2020-26234 (1)

Vendor Advisories for CVE-2020-26234 (1)

IV. Related Vulnerabilities

Same product: opencast
Same vendor: opencast
Same weakness: CWE-346

V. Comments for CVE-2020-26234

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