Bug 1340205 (CVE-2016-4800)

Summary: CVE-2016-4800 jetty: path normalization
Product: [Other] Security Response Reporter: Chess Hazlett <chazlett>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: abhgupta, aileenc, aszczucz, bgollahe, bkearney, cbillett, chazlett, dmcphers, felias, gvarsami, hhorak, jcoleman, jialiu, jjohnstn, jmatthew, jokerman, jolee, jorton, kanderso, kconner, kseifried, ldimaggi, lmeyer, mbaluch, mmccomas, mmccune, nwallace, ohadlevy, pavelp, rwagner, security-response-team, tcunning, tiwillia, tjay, tkirby, tlestach, tsanders, vhalbert
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: jetty 9.3.9 Doc Type: If docs needed, set a value
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Story Points: ---
Clone Of: Environment:
Last Closed: 2016-05-30 19:30:23 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1337996    

Description Chess Hazlett 2016-05-26 17:30:17 UTC 
It was reported that Jetty path normalization mechanism implemented in PathResource class and introduced in Jetty versions 9.3.x is vulnerable to malicious URL requests containing specific escaped characters. Malicious user can gain access to protected resources (e.g. WEB-INF and META-INF folders and their contents) and defeat application filters or other security constraints implemented in the servlet configuration.

For mitigation, see external reference.

External Reference:

http://www.ocert.org/advisories/ocert-2016-001.html
Comment 1 Tomas Hoger 2016-05-30 19:30:23 UTC 
Only affected Jetty 9.3.0-9.3.8 that is not shipped as part of any Red Hat product.
Comment 2 Tomas Hoger 2016-05-30 19:33:26 UTC 
Upstream fix:

https://github.com/eclipse/jetty.project/commit/97af3d663fd22343129e8364d601640649d9eaea