|The Vigil@nce team watches public vulnerabilities impacting your computers, and then offers security solutions, a database and tools to fix them.|
Apache Tomcat: denial of service via FileUpload
Synthesis of the vulnerability
An attacker can send files of a specially chosen size to Apache Tomcat, in order to overload the server.
Impacted products: Tomcat, Debian, Fedora, HP-UX, Domino, QRadar SIEM, Tivoli Storage Manager, Tivoli System Automation, Tivoli Workload Scheduler, WebSphere AS Traditional, IBM WebSphere ESB, WebSphere MQ, MariaDB ~ precise, MySQL Community, MySQL Enterprise, openSUSE Leap, Oracle Communications, Oracle Directory Server, Oracle Directory Services Plus, Oracle Fusion Middleware, Oracle GlassFish Server, Oracle Identity Management, Oracle iPlanet Web Server, Oracle OIT, Solaris, Tuxedo, Oracle Virtual Directory, WebLogic, Oracle Web Tier, Percona Server, Puppet, RHEL, JBoss EAP by Red Hat, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this bulletin: 2/4.
Consequences of an intrusion: denial of service on server, denial of service on service.
Hacker's origin: internet client.
Creation date: 22/06/2016.
Références of this threat: 1987864, 1989628, 1990172, 1991866, 1991867, 1991870, 1991871, 1991875, 1991876, 1991878, 1991880, 1991882, 1991884, 1991885, 1991886, 1991887, 1991889, 1991892, 1991894, 1991896, 1991902, 1991903, 1991951, 1991955, 1991959, 1991960, 1991961, 1992835, 1995388, 1995793, 2000095, 2000544, 2001563, 2012109, 2015814, 7014463, bulletinjul2016, c05324759, cpuapr2017, cpuapr2018, cpujul2017, cpujul2018, cpuoct2017, CVE-2016-3092, DLA-528-1, DLA-529-1, DSA-3609-1, DSA-3611-1, DSA-3614-1, FEDORA-2016-0a4dccdd23, FEDORA-2016-2b0c16fd82, HPSBUX03665, openSUSE-SU-2016:2252-1, RHSA-2016:2068-01, RHSA-2016:2069-01, RHSA-2016:2070-01, RHSA-2016:2071-01, RHSA-2016:2072-01, RHSA-2016:2599-02, RHSA-2016:2807-01, RHSA-2016:2808-01, RHSA-2017:0455-01, RHSA-2017:0456-01, RHSA-2017:0457-01, SUSE-SU-2017:1660-1, USN-3024-1, USN-3027-1, VIGILANCE-VUL-19953.
Description of the vulnerability
The Apache Tomcat product uses a slightly fork of the Apache Commons FileUpload library.
This library is used to receive files from an HTTP client to the server. However, when the file size is such that the size of the MIME envelope (file content + MIME headers) is equal to the size of the file reading buffer, the transfer requires an extremely long duration.
An attacker can therefore send files of a specially chosen size to Apache Tomcat, in order to overload the server.
Full Vigil@nce bulletin... (Free trial)
Computer vulnerabilities tracking service
Vigil@nce provides a networks vulnerabilities announce. The technology watch team tracks security threats targeting the computer system. Each administrator can customize the list of products for which he wants to receive vulnerability alerts. The Vigil@nce team tracks computer vulnerabilities impacting systems and applications.