(RHSA-2015:1858) Low: mod_proxy_fcgi and ceph security and bug fix update

Red Hat Ceph Storage is a massively scalable, open, software-defined
storage platform that combines the most stable version of the Ceph storage
system with a Ceph management platform, deployment tools, and support
services.

The mod_proxy_fcgi package provides a proxy module for the Apache 2.2 HTTP
server.

A buffer overflow flaw was found in mod_proxy_fcgi’s handle_headers()
function. A malicious FastCGI server that httpd is configured to connect to
could send a carefully crafted response that would cause an httpd child
process handling the request to crash. (CVE-2014-3583)

This update also fixes the following bugs:

• The RADOS gateway (RGW) can now properly decode the slash characters
  (“/”) in clients’ upload IDs. (BZ#1183182)

• The RGW’s object attribute updates could race with other object updates
  operations, which led to inconsistent object states, such as incomplete
  object deletions. RGW now handles attribute updates correctly. (BZ#1206963)

• Recreating a previously existing bucket in RGW did not remove the bucket
  instance metadata object and created a redundant object in the RGW pool.
  The redundant objects are no longer generated. (BZ#1212524)

• The Content-Length header is now correctly created when creating a
  container using the Swift API. (BZ#1213988)

• RGW did not properly cache users’ keystone tokens and validated all
  keystone tokens for every Swift operation. RGW now caches tokens correctly,
  so that the token validation occurs only when necessary. (BZ#1213999)

• Modifying a user’s Access Control List (ACL) permissions for an object in
  RGW inappropriately caused the user to become the owner of the object.
  This update fixes this bug. (BZ#1214051)

• RGW could fail to update the bucket attributes during a Swift API “POST”
  operation. RGW now correctly updates the bucket attributes. (BZ#1214058)

• RGW no longer terminated unexpectedly when using keystone authentication
  to copy an object. (BZ#1214061)

• An attempt to download an object greater than 512 KB using a range header
  failed when using the Swift API. Objects can now be downloaded as expected.
  (BZ#1214854)

• When using OpenStack’s Cinder RADOS Block Device (RBD) back-end driver
  with Ceph administration socket enabled, Ceph could leak file descriptors
  and eventually consume the maximum number of allowed opened files.
  This behavior caused Cinder’s RBD connections to fail. Now, Ceph closes the
  administration socket appropriately. (BZ#1220496)

• When a part of a multi-part object was resent, the object became broken
  due a discrepancy between the object size when listing the object and when
  stating the object. Now, multi-part objects no longer become broken in such
  a case. (BZ#1222091)

• When the number of placement groups (PGs) in a pool was increased, Ceph
  did not send watch or notify operations correctly. Consequently, the librbd
  library presented inconsistent RBD snapshot data. Now, Ceph correctly
  re-sends operations. (BZ#1245785)

• When reopening log files, Object Storage Devices (OSDs) could write data
  to the incorrect file descriptor. Consequently, log entries were lost, or
  were written to a file descriptor, which was opened by the filestore.
  The latter case could cause data corruption. This bug has been fixed.
  (BZ#1247752)

All mod_proxy_fcgi and ceph users are advised to upgrade to these updated
packages, which correct these issues.