Home page logo
/

bugtraq logo Bugtraq mailing list archives

[SECURITY] CVE-2009-0580 UPDATED Apache Tomcat User enumeration vulnerability with FORM authentication
From: Mark Thomas <markt () apache org>
Date: Fri, 05 Jun 2009 12:12:45 +0100

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Updated to clarify affected versions as they vary for each affected Realm.

CVE-2009-0580: Tomcat information disclosure vulnerability

Severity: Low

Vendor:
The Apache Software Foundation

Versions Affected:
MemoryRealm:
 Tomcat 4.1.0 to 4.1.39
 Tomcat 5.5.0 to 5.5.27
 Tomcat 6.0.0 to 6.0.18
DataSourceRealm:
 Tomcat 4.1.17 to 4.1.31
 Tomcat 5.5.0  to 5.5.5
JDBCRealm:
 Tomcat 4.1.0 to 4.1.31
 Tomcat 5.5.0 to 5.5.5

The unsupported Tomcat 3.x, 4.0.x and 5.0.x versions may be also affected.

Description:
Due to insufficient error checking in some authentication classes,
Tomcat allows for the enumeration (brute force testing) of usernames by
supplying illegally URL encoded passwords. The attack is possible if
form based authenticiaton (j_security_check) with one of the following
authentication realms is used:
 * MemoryRealm
 * DataSourceRealm
 * JDBCRealm

Mitigation:
6.0.x users should do one of the following:
 - upgrade to 6.0.20
 - apply this patch http://svn.apache.org/viewvc?rev=747840&view=rev
5.5.x users should do one of the following:
 - upgrade to 5.5.28 when released
 - apply this patch http://svn.apache.org/viewvc?rev=781379&view=rev
4.1.x users should do one of the following:
 - upgrade to 4.1.40 when released
 - apply this patch http://svn.apache.org/viewvc?rev=781382&view=rev

Example:
The following POST request should trigger an error (500 server error or
empty response, depending on the configuration) if the ROOT web
application is configured to use FORM authentication:

POST /j_security_check HTTP/1.1
Host: localhost

j_username=tomcat&j_password=%

Credit:
This issue was discovered by D. Matscheko and T. Hackner of SEC Consult.

References:
http://tomcat.apache.org/security.html

Mark Thomas
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (MingW32)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iEYEARECAAYFAkoo/a0ACgkQb7IeiTPGAkOwBgCgg32bOh5/3FWwmg+qnazFuJLy
UGAAnjGl3psau6THn7UDBjpHfSG8LZ4a
=SIJ6
-----END PGP SIGNATURE-----


  By Date           By Thread  

Current thread:
  • [SECURITY] CVE-2009-0580 UPDATED Apache Tomcat User enumeration vulnerability with FORM authentication Mark Thomas (Jun 05)
[ Nmap | Sec Tools | Mailing Lists | Site News | About/Contact | Advertising | Privacy ]
AlienVault