CVE-2016-0793: Infoleak
First published: Tue Feb 09 2016(Updated: )
An information disclosure of the content of restricted files WEB-INF and META-INF via filter mechanism was reported. Servlet filter restriction mechanism is enforced by two code checks: if (path.startsWith("/META-INF") || path.startsWith("META-INF") || path.startsWith("/WEB-INF") || path.startsWith("WEB-INF")) { return false; } private boolean isForbiddenPath(String path) { return path.equalsIgnoreCase("/meta-inf/") || path.regionMatches(true, 0, "/web-inf/", 0, "/web-inf/".length()); } which can be bypassed using lower case and adding meaningless character to path.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Redhat Jboss Wildfly Application Server | =10.0.0 | |
| Microsoft Windows |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1306470
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1305937#c5
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1305937#c8
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1305937#c10
- https://github.com/undertow-io/undertow/blob/master/servlet/src/main/java/io/undertow/servlet/handlers/ServletInitialHandler.java#L201
- https://bugzilla.redhat.com/show_bug.cgi?id=1305937
- http://packetstormsecurity.com/files/136323/Wildfly-Filter-Restriction-Bypass-Information-Disclosure.html
- https://security.netapp.com/advisory/ntap-20180215-0001/
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03784en_us
- https://www.exploit-db.com/exploits/39573/
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