Ubuntu Security Update USN-6908-1: Tomcat vulnerabilities

[LinuxBot]

It was discovered that the Tomcat SSI printenv command echoed user provided data without escaping it. An attacker could possibly use this issue to perform an XSS attack. (CVE-2019-0221) It was discovered that Tomcat incorrectly handled certain uncommon PersistenceManager with FileStore configurations. A remote attacker could possibly use this issue to execute arbitrary code. (CVE-2020-9484, CVE-2021-25329)

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