CVE-2017-5650 Information

Description

In Apache Tomcat 9.0.0.M1 to 9.0.0.M18 and 8.5.0 to 8.5.12 the handling of an HTTP/2 GOAWAY frame for a connection did not close streams associated with that connection that were currently waiting for a WINDOW_UPDATE before allowing the application to write more data. These waiting streams each consumed a thread. A malicious client could therefore construct a series of HTTP/2 requests that would consume all available processing threads.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html http://www.securityfocus.com/bid/97531 http://www.securitytracker.com/id/1038217 https://lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551@3Cdev.tomcat.apache.org3E https://lists.apache.org/thread.html/6af47120905aa7d8fe12f42e8ff2284fb338ba141d3b77b8c7cb61b3@3Cdev.tomcat.apache.org3E https://lists.apache.org/thread.html/88855876c33f2f9c532ffb75bfee570ccf0b17ffa77493745af9a17a@3Cdev.tomcat.apache.org3E https://lists.apache.org/thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f83bbedc@3Cdev.tomcat.apache.org3E https://lists.apache.org/thread.html/d24303fb095db072740d8154b0f0db3f2b8f67bc91a0562dbe89c738@3Cannounce.tomcat.apache.org3E https://lists.apache.org/thread.html/eb6efa8d59c45a7a9eff94c4b925467d3b3fec8ba7697f3daa314b04@3Cdev.tomcat.apache.org3E https://lists.apache.org/thread.html/r3bbb800a816d0a51eccc5a228c58736960a9fffafa581a225834d97d@3Cdev.tomcat.apache.org3E https://lists.apache.org/thread.html/r48c1444845fe15a823e1374674bfc297d5008a5453788099ea14caf0@3Cdev.tomcat.apache.org3E https://security.gentoo.org/glsa/201705-09 https://security.netapp.com/advisory/ntap-20180614-0001/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5