SB2021102117 - Multiple vulnerabilities in Red Hat OpenShift Container Platform 4.9
Published: October 21, 2021 Updated: June 2, 2022
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Insufficient Session Expiration (CVE-ID: CVE-2021-34428)
The vulnerability allows an attacker to gain access to sensitive information.
The vulnerability exists due to insufficient session expiration issue. If an exception is thrown from the SessionListener#sessionDestroyed() method, then the session ID is not invalidated in the session ID manager. On deployments with clustered sessions and multiple contexts this can result in a session not being invalidated.
2) Resource exhaustion (CVE-ID: CVE-2021-33196)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources when parsing archives. A remote attacker can pass a specially crafted .zip file to the application, trigger resource exhaustion and perform a denial of service (DoS) attack.
3) Input validation error (CVE-ID: CVE-2021-28169)
The vulnerability allows a remote attacker to gain access to sensitive information..
The vulnerability exists due to a double decoding issue when parsing URI with certain characters. A remote attacker can send requests to the ConcatServlet and WelcomeFilter and view contents of protected resources within the WEB-INF directory.
Example:
/concat?/%2557EB-INF/web.xml
4) Use-after-free (CVE-ID: CVE-2021-36980)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in decode_NXAST_RAW_ENCAP (called from ofpact_decode and ofpacts_decode) during the decoding of a RAW_ENCAP action. A remote attacker can send a specially crafted request to the system, trigger a use-after-free error and execute arbitrary code.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
Remediation
Install update from vendor's website.