Synopsis

Moderate: Red Hat Enterprise MRG Grid 2.0 security, bug fix and enhancement update

Type/Severity

Security Advisory: Moderate

Topic

Updated Grid component packages that fix one security issue, multiple bugs,
and add various enhancements are now available for Red Hat Enterprise MRG
2.0 for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having moderate
security impact. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available from the CVE link in
the References section.

Description

Red Hat Enterprise MRG (Messaging, Realtime, and Grid) is a next-generation
IT infrastructure for enterprise computing. MRG offers increased
performance, reliability, interoperability, and faster computing for
enterprise customers.

MRG Grid provides high-throughput computing and enables enterprises to
achieve higher peak computing capacity as well as improved infrastructure
utilization by leveraging their existing technology to build high
performance grids. MRG Grid provides a job-queueing mechanism, scheduling
policy, and a priority scheme, as well as resource monitoring and resource
management. Users submit their jobs to MRG Grid, where they are placed into
a queue. MRG Grid then chooses when and where to run the jobs based upon a
policy, carefully monitors their progress, and ultimately informs the user
upon completion.

A flaw was discovered in Cumin where it would log broker authentication
credentials to the Cumin log file. A local user exploiting this flaw could
connect to the broker outside of Cumin's control and perform certain
operations such as scheduling jobs, setting attributes on jobs, as well as
holding, releasing or removing jobs. The user could also use this to,
depending on the defined ACLs of the broker, manipulate message queues and
other privileged operations. (CVE-2011-2925)

In addition, these updated packages for Red Hat Enterprise Linux 5 provide
numerous bug fixes and enhancements for the Grid component of MRG. Some of
the most important enhancements include:

• Expanded support of EC2 features, including EBS and VPC.
• Improved negotiation performance.
• Reduced shadow memory usage.
• Integrated configuration and management experience, including real-time

monitoring, diagnostics, and configuration templates.

Release Notes:

• When MRG Grid ran on a node with multiple network interfaces, it tried to

estimate the correct interface for its communications with the remaining
MRG Grid nodes. As a consequence, the node could have failed to communicate
with other parts of MRG Grid correctly if the wrong interface had been
chosen. As a workaround to this issue, MRG Grid can be forced to use a
specific network interface by setting the NETWORK_INTERFACE parameter to
the IP address of that interface. To determine which interface was used by
MRG Grid when it fails to communicate with other parts of the grid, include
the D_HOSTNAME variable in the logging configuration of the corresponding
daemon. (BZ#728285)

• The remote configuration database requires an update to include changes

for MRG Grid version 2.0.1. But the database snapshot provided with MRG
only contains a basic configuration, and thus loading the database snapshot
would replace the existing pool configuration. To solve this issue, the
upgrade-wallaby-db tool which upgrades an existing deployment's database
has to be used. This tool can be downloaded from the following page:
https://access.redhat.com/kb/docs/DOC-58404

• With this update, the Elastic Compute Cloud Grid ASCII Helper Protocol

(EC2 GAHP) is preferred over AMAZON GAHP. The condor-ec2-enhanced-hooks
package has been updated to detect the correct GAHP for the EC2 Enhanced
feature based upon what GAHPs are available on the scheduler. To ensure
that jobs are routed to the proper resources, the 'set_gridresource =
"amazon"; \' setting should be removed from all existing EC2 Enhanced
routes in a MRG Grid's configuration. (BZ#688717)

Space precludes documenting all of these changes in this advisory. Refer to
the Red Hat Enterprise MRG 2.0 Technical Notes document for information on
these changes:

https://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_MRG/2.0/html/Technical_Notes/index.html

All users of the Grid capabilities of Red Hat Enterprise MRG 2.0 are
advised to upgrade to these updated packages, which resolve the issues and
add the enhancements noted in the Red Hat Enterprise MRG 2.0 Technical
Notes.

Solution

Before applying this update, make sure all previously-released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259

Affected Products

• MRG Grid 2 for RHEL 5 x86_64
• MRG Grid 2 for RHEL 5 i386
• MRG Grid from RHUI 2 for RHEL 5 x86_64

Fixes

• BZ - 631804 - condor_router_history not handled exception when bad option is passed
• BZ - 632109 - [RFE] list FQNDs in wallaby-inventory
• BZ - 637963 - RFE: Quota hierarchy to support mixed dynamic and static group quotas
• BZ - 652772 - SEC_* param cleanup in base-db
• BZ - 659247 - Delete queue dialog loop
• BZ - 673273 - cumin does not shut down during preuninstall
• BZ - 674598 - cumin cannot handle leading spaces in variable name
• BZ - 681648 - RFE: Update low-latency packaging to provide configuration file
• BZ - 681650 - RFE: Update ec2-enhanced packaging to drop config file
• BZ - 681651 - RFE: Update ec2-enhanced-hooks to drop config file
• BZ - 682447 - The text that indicates when the page was last updated doesn't show when the page update fails
• BZ - 696697 - Don't allow negative limit value to be set [RFE]
• BZ - 697016 - Add a mechanism to reset limits to unlimited [RFE]
• BZ - 697093 - Change y-axis labels on png flash charts to use units of 'M" for values >= 1 million
• BZ - 699413 - Cumin interaction with multiple hierarchical collectors
• BZ - 699643 - "condor reuse slot" users are on log-on screen
• BZ - 700540 - RFE: Human readable Up-time
• BZ - 700545 - AviaryScheduler feature missing dep on Scheduler
• BZ - 700595 - Unable to install wallaby w/o condor
• BZ - 700774 - [RFE] aviary doesn't insert default values into job classads
• BZ - 700863 - condor_configure_pool loses param settings if --schedd or --qmfbroker is used
• BZ - 701337 - Add UPDATE_INTERVAL to base-db
• BZ - 701966 - ccs incorrectly prompts for default values for params not to be added to the db & prints confusing error messages
• BZ - 702440 - Generate synthetic agent deletes in cumin based on heartbeats and agent list [RFE]
• BZ - 703196 - Unable to set non-numeric Args for job
• BZ - 703279 - Cumin does not return to beginning of page list when a search filter is applied
• BZ - 703283 - Job statistics overview under Grid User is not filtered for that user
• BZ - 703630 - Move fullpage chart link closer to graph [RFE]
• BZ - 703860 - Default sort order of columns with numerical values should be descending
• BZ - 703905 - wrong reject "group quota exceeded"
• BZ - 704490 - Condor platform Unknown
• BZ - 704597 - condor_configd hits "CRITICAL: Unable to get node information object" stops updating
• BZ - 704653 - Misleading/wrong error message on cumin service start by unprivileged user.
• BZ - 705437 - schedd crash on Windows due to bug in timed_queue<>
• BZ - 706108 - [RFE] wallaby Master feature
• BZ - 706977 - HGQ sanity check on recursive allocation is checking wrong variable
• BZ - 707078 - obsolete (and uninitialized) variable ignore_schedd_limit is being used in place of ignore_submitter_limit
• BZ - 707081 - groups are not sorted in starvation order
• BZ - 707335 - Negotiator crashes with hierarchical group quotas after reconfig
• BZ - 707576 - cumin doesn't redirect after the session times out
• BZ - 707584 - The Inventory page has checkboxes that do not serve a purpose
• BZ - 707770 - Dedicated scheduler releases half of claims
• BZ - 708944 - hold/release removes job from queue
• BZ - 709713 - [RFE] Add support for EBS storage
• BZ - 710215 - [RFE] set WantAWS = False in EC2 hooks
• BZ - 712529 - condor_router_* scripts incorrect in 7_6 series
• BZ - 712972 - negotiating groups with no submitters
• BZ - 712973 - negotiator overwhelmed with rejForSubmitterLimit rejections
• BZ - 712974 - [RFE]Limits table: Make the value the hyperlinked value rather than the name
• BZ - 712975 - enable additional GROUP_DYNAMIC_MACH_CONSTRAINT behavior
• BZ - 712987 - sort on most starved in negotiateWithGroup
• BZ - 713511 - Always run POST script, even if PRE script fails
• BZ - 715956 - Edit attributes page should not use update-interval
• BZ - 715973 - Multitude of "Edit Ad: OK" messages
• BZ - 716466 - RFE: Add ec2 support for vpc address
• BZ - 716519 - RFE: earlier spin halting when zero pie left
• BZ - 718265 - low-latency not expiring work
• BZ - 719019 - Startd RANK will only preempt if user priorities allow it
• BZ - 719050 - RFE: Allow condor_configure_store to edit groups
• BZ - 720374 - Files "condor_router_history", "condor_router_rm" and "condor_router_q" are not valid executable files for Windows
• BZ - 720507 - Schedd crash while asynchronously negotiating or claiming
• BZ - 723613 - Changing type of job attribute from int/float to another type causes Edit Attributes task to hang after submit
• BZ - 723971 - Daemons using read_condor_config crashes when <subsys>_LOG is not specified
• BZ - 725826 - Force terminate-on-shutdown (instead of stop) for EC2 AMIs
• BZ - 731574 - CVE-2011-2925 cumin: broker username/password appears in the log file

CVEs

• CVE-2011-2925

References