SB2021121508 - Multiple vulnerabilities in Opencast

Description

This security bulletin contains information about 2 vulnerabilities.

1) Code Injection (CVE-ID: CVE-2021-44228)

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

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

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation when processing LDAP requests. A remote attacker can send a specially crafted request to the application and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Note, we are aware of attackers exploiting the vulnerability in the wild.

2) Authentication Bypass by Spoofing (CVE-ID: CVE-2021-43807)

CWE-ID: CWE-290 - Authentication Bypass by Spoofing

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

The vulnerability allows a remote user to bypass request method restrictions and perform unauthorized state-changing actions.

The vulnerability exists due to authentication bypass by spoofing in the HTTP method handling logic when processing requests with a URL parameter that overrides the HTTP method. A remote user can craft a link or form that changes the assumed HTTP method to bypass request restrictions and perform unauthorized state-changing actions.

User interaction is required, such as an authenticated administrator clicking a crafted link or submitting a crafted form.

Remediation

Install update from vendor's website.

References

• https://github.com/opencast/opencast/security/advisories/GHSA-mf4f-j588-5xm8
• https://github.com/opencast/opencast/security/advisories/GHSA-j4mm-7pj3-jf7v
• https://github.com/advisories/GHSA-j4mm-7pj3-jf7v