GHSA-w227-xcfx-3pj8 Exposure of Sensitive Information in Apache Tomcat

• Maven org.apache.tomcat:tomcat: >= 4.1.0, < 4.1.40 → fixed in 4.1.40 • Maven org.apache.tomcat:tomcat: >= 5.0.0, < 5.5.28 → fixed in 5.5.28 • Maven org.apache.tomcat:tomcat: >= 6.0.0, < 6.0.19 → fixed in 6.0.19

Apache Tomcat 4.1.0 through 4.1.39, 5.5.0 through 5.5.27, and 6.0.0 through 6.0.18, when FORM authentication is used, allows remote attackers to enumerate valid usernames via requests to /j_security_check with malformed URL encoding of passwords, related to improper error checking in the (1) MemoryRealm, (2) DataSourceRealm, and (3) JDBCRealm authentication realms, as demonstrated by a % (percent) value for the j_password parameter.