SB2021122209 - Multiple vulnerabilities in Opencast

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Main Vulnerability Database SB2021122209

SB2021122209 - Multiple vulnerabilities in Opencast

Published: December 22, 2021 Updated: April 23, 2026

Security Bulletin ID SB2021122209
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Files or Directories Accessible to External Parties (CVE-ID: CVE-2021-43821)

CWE-ID: CWE-552 - Files or Directories Accessible to External Parties

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Green


The vulnerability allows a remote user to gain access to sensitive information.

The vulnerability exists due to a logic error that allows references to local file URLs in ingested media packages. A remote user can include arbitrary local files from Opencast's host machine and make them publicly available via the web interface.


2) Insufficiently protected credentials (CVE-ID: CVE-2018-16153)

CWE-ID: CWE-522 - Insufficiently Protected Credentials

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to obtain global system account credentials.

The vulnerability exists due to insufficiently protected credentials in media package external service authentication handling when accessing files referenced by user-supplied media packages. A remote attacker can include an external service in a media package to obtain global system account credentials.

Previous protections reduced exposure of cleartext authentication, but authentication attempts could still disclose credentials in a form that may be recoverable.


Remediation

Install update from vendor's website.

References