SB2022103001 - Debian update for tomcat9
Published: October 30, 2022 Updated: October 25, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Deserialization of Untrusted Data (CVE-ID: CVE-2020-9484)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insecure input validation when processing serialized data in uploaded files names. A remote attacker can pass specially crafted file name to the application and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system but requires that the server is configured to use PersistenceManager with a FileStore and the attacker knows relative file path from storage location.
2) Information disclosure (CVE-ID: CVE-2021-43980)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to incorrect implementation of blocking reads and writes. A remote attacker can trigger a concurrency bug and force client connections to share an Http11Processor instance resulting in responses, or part responses, to be received by the wrong client.
3) Security restrictions bypass (CVE-ID: CVE-2022-23181)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a time of check, time of use flaw when configured to persist sessions using the FileStore. A local user can perform certain actions which lead to security restrictions bypass and privilege escalation (code execution with Tomcat process privileges).
4) Data Handling (CVE-ID: CVE-2022-29885)
The vulnerability allows a remote attacker to perform DoS attack.
The vulnerability exists due to an error in documentation for the EncryptInterceptor, which incorrectly stated that it enabled Tomcat clustering to run over an untrusted network. A remote attacker can perform a denial of service attack against the exposed EncryptInterceptor.
Remediation
Install update from vendor's website.