CVE-2009-0580

medium Apache
CVSS v3 Base Score
4.3
AV:N/AC:M/Au:N/C:P/I:N/A:N
EPSS Score
88.2%
Exploitation probability in 30 days
Top 1% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
M
Confidentiality
P
Integrity
None
Availability
None
Published: June 5, 2009 (6187 days ago)
Last Modified: April 23, 2026
Vendor: Apache
Source: NVD

Description

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.

CWE

CWE-200

Affected Products

apache tomcat

References

🔗 lists.apple.com 🔗 lists.opensuse.org 🔗 marc.info 🔗 marc.info 🔗 marc.info