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Category:   Application (Web Server/CGI)  >   Jetty Vendors:   Mort Bay Consulting et al
Jetty Multiple Flaws Let Remote Users Conduct HTTP Request Smuggling and Session Hijacking Attacks and Determine the Installation Path
SecurityTracker Alert ID:  1041194
SecurityTracker URL:  http://securitytracker.com/id/1041194
CVE Reference:   CVE-2017-7656, CVE-2017-7657, CVE-2017-7658, CVE-2018-12536, CVE-2018-12538   (Links to External Site)
Date:  Jun 27 2018
Impact:   Disclosure of system information, Modification of system information, Modification of user information, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 9.2.x, 9.3.x, 9.4.x
Description:   Multiple vulnerabilities were reported in Jetty. A remote user can conduct HTTP request smuggling attacks. A remote user can determine the installation path. A remote user can hijack the target user's session.

A remote user can submit a specially crafted HTTP/0.9 request containing invalid request headers to cause Jetty and an upstream HTTP agent (such as an origin server or another proxy) to interpret the boundary of the HTTP request differently [CVE-2017-7656]. As a result, a malicious request may be embedded within another request as processed by the subsequent system. This allows a remote user to potentially poison the cache.

A remote user can submit a specially crafted HTTP request containing invalid Chunked Transfer-Encoding headers to cause Jetty and an upstream HTTP agent (such as an origin server or another proxy) to interpret the boundary of the HTTP request differently [CVE-2017-7657]. As a result, a malicious request may be embedded within another request as processed by the subsequent system. This allows a remote user to potentially poison the cache.

A remote user can submit a specially crafted HTTP request containing more than one Content-Length header to cause Jetty and an upstream HTTP agent (such as an origin server or another proxy) to interpret the boundary of the HTTP request differently [CVE-2017-7658]. As a result, a malicious request may be embedded within another request as processed by the subsequent system. This allows a remote user to potentially poison the cache.

A remote user can submit a specially crafted query to trigger a 'java.nio.file.InvalidPathException' that displays the installation path [CVE-2018-12536].

A remote user can exploit a flaw in the FileSessionDataStor to hijack an existing HttpSession and delete other sessions [CVE-2018-12538]. Versions 9.4.x prior to 9.4.9 are affected. Systems using the org.eclipse.jetty.server.session.FileSessionDataStore class are affected. Systems using jetty-distribution/jetty-home with the session-store-file module are also affected.

Regis Leroy of Makina Corpus, Okan CoAkun, and Jeffrey Morlan of Everlaw reported these vulnerabilities.

Impact:   A remote user can determine the installation path.

A remote user can hijack or delete the target user's session.

A remote user may be able to poison an intermediate cache, bypass application-level security features within an intermediate proxy/gateway server, or conduct cross-site scripting attacks against target users.

Solution:   The vendor has issued a fix (9.4.11.v20180605).

9.2.25.v20180606, 9.3.24.v20180605


The vendor advisory is available at:

http://dev.eclipse.org/mhonarc/lists/jetty-announce/msg00123.html

Vendor URL:  dev.eclipse.org/mhonarc/lists/jetty-announce/msg00123.html (Links to External Site)
Cause:   Access control error, Input validation error, State error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.


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