Apache Tomcat information disclosure vulnerability

2008.08.04
Risk: Medium
Local: No
Remote: Yes
CWE: CWE-22


CVSS Base Score: 5/10
Impact Subscore: 2.9/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: Partial
Integrity impact: None
Availability impact: None

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 CVE-2008-2370: Apache Tomcat information disclosure vulnerability Severity: Important Vendor: The Apache Software Foundation Versions Affected: Tomcat 4.1.0 to 4.1.37 Tomcat 5.5.0 to 5.5.26 Tomcat 6.0.0 to 6.0.16 The unsupported Tomcat 3.x, 4.0.x and 5.0.x versions may be also affected Description: When using a RequestDispatcher the target path was normalised before the query string was removed. A request that included a specially crafted request parameter could be used to access content that would otherwise be protected by a security constraint or by locating it in under the WEB-INF directory. Mitigation: 6.0.x users should upgrade to 6.0.18 5.5.x users should obtain the latest source from svn or apply this patch which will be included from 5.5.27 http://svn.apache.org/viewvc?rev=680949&view=rev 4.1.x users should obtain the latest source from svn or apply this patch which will be included from 4.1.38 http://svn.apache.org/viewvc?rev=680950&view=rev Example: For a page that contains: <% pageContext.forward("/page2.jsp?somepar=someval&par="+request.getParamet er("blah")); %> an attacker can use: http://host/page.jsp?blah=/../WEB-INF/web.xml Credit: This issue was discovered by ???Stefano Di Paola of Minded Security Research Labs. 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 iEYEARECAAYFAkiTGGkACgkQb7IeiTPGAkNeQACdHk1KQ98Dx45Sc+Hslw/YIBH7 8b4An1WZ30LS34Pxx4Rc+VzqhswLLbZd =Zbvc -----END PGP SIGNATURE-----

References:

http://www.securityfocus.com/bid/30494
http://www.securityfocus.com/archive/1/archive/1/495022/100/0/threaded
http://tomcat.apache.org/security-6.html
http://tomcat.apache.org/security-5.html
http://tomcat.apache.org/security-4.html


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