Linux Condor security and bug fix update

Condor is a specialized workload management system for compute-intensive jobs. It provides a job queuing mechanism, scheduling policy, priority scheme, and resource monitoring and management.

A flaw was found in the way Condor interpreted wildcards in authorization lists. Certain authorization lists using wildcards in DENY rules, such as DENY_WRITE or HOSTDENY_WRITE, that conflict with the definitions in ALLOW rules, could permit authenticated remote users to submit computation jobs,
even when such access should have been denied. (CVE-2008-3424)

How do I fix this bug in Condor Software?

Type the following command to fix this bug
# up2date -u
If you are using Red Hat Enterprise MRG 1, enter:
# yum update

Bug Fixed in this update

* the /etc/condor/condor_config file started with “What machine is your
central manager?”. The following line was blank, instead of having the
“CONDOR_HOST” option, causing confusion. The “What machine…” text is now
removed.

* condor_config.local defined “LOCK = /tmp/[lock file]”. This is no longer
explicitly defined; however, lock files may be in “/tmp/”, and could be
removed by tmpwatch. A “LOCK_FILE_UPDATE_INTERVAL” option, which defaults
to eight hours, has been added. This updates the timestamps on lock files,
preventing them from being removed by tools such as tmpwatch.

* when a “SCHEDD_NAME” name in condor_config ended with an “@”, the
system’s hostname was appended. For example, if “SCHEDD_NAME = test@” was
configured, “condor_q -name test@” failed with an “Collector has no record
of schedd/submitter” error. Now, the hostname is not appended when a name
ends with an “@”. In High Availability (HA) Schedd deployments, this allows
a name to be shared by multiple Schedds.

* when too few arguments were passed to “condor_qedit”, such as
“condor_qedit -constraint TRUE”, a segfault occurred. Better argument
handling has been added to resolve this.

* due to missing common_createddl.sql and pgsql_createddl.sql files,
it was not possible to use Quill. Now, these files are included in
“/usr/share/condor/sql/”.

* “condor_submit -dump ad [file-name]” caused a segfault if the [file-name] job contained “universe = grid”.

* previously, a condor user and group were created if they did not exist,
without specifying a specific UID and GID. Now, UID and GID 64 are used.
The effect of this change is non-existent if upgrading the condor packages.
If an existing condor user and group are manually changed, problems with
file ownership will occur.

Configuration changes (from the Condor release notes – see link below):

* a new CKPT_SERVER_CHECK_PARENT_INTERVAL variable sets the time interval
between a checkpoint server checking if its parent is running. If the
parent server has died, the checkpoint server is shut down.

* a new CKPT_PROBE variable to define an executable for the helper process
Condor uses for information about the CheckpointPlatform attribute.

* STARTER_UPLOAD_TIMEOUT now defaults to 300 seconds.

* new variables (booleans) PREEMPTION_REQUIREMENTS_STABLE and
PREEMPTION_RANK_STABLE, configure whether attributes used in
PREEMPTION_REQUIREMENTS and PREEMPTION_RANK change during negotiation
cycles.

* a new GRIDMANAGER_MAX_WS_DESTROYS_PER_RESOURCE variable, with a
default value of 5, defines the number of simultaneous WS destroy commands
that can be sent to a server for type gt4 grid universe jobs.

* now, VALID_SPOOL_FILES automatically includes the “SCHEDD.lock” lock file
for condor_schedd HA failover.

* the default value for SEC_DEFAULT_SESSION_DURATION has been changed from
8640000 seconds (100 days) to 86400 seconds (one day).

Important: these updated packages upgrade Condor to version 7.0.4. For a
full list of changes, refer to the Condor release notes:
www.cs.wisc.edu/condor/manual/v7.0/8_3Stable_Release.html

condor users should upgrade to these updated packages, which resolve these
issues.


🐧 Get the latest tutorials on Linux, Open Source & DevOps via RSS feed or Weekly email newsletter.

🐧 0 comments... add one


CategoryList of Unix and Linux commands
Disk space analyzersdf duf ncdu pydf
File Managementcat cp mkdir tree
FirewallAlpine Awall CentOS 8 OpenSUSE RHEL 8 Ubuntu 16.04 Ubuntu 18.04 Ubuntu 20.04
Modern utilitiesbat exa
Network UtilitiesNetHogs dig host ip nmap
OpenVPNCentOS 7 CentOS 8 Debian 10 Debian 8/9 Ubuntu 18.04 Ubuntu 20.04
Package Managerapk apt
Processes Managementbg chroot cron disown fg glances gtop jobs killall kill pidof pstree pwdx time vtop
Searchingag grep whereis which
User Informationgroups id lastcomm last lid/libuser-lid logname members users whoami who w
WireGuard VPNAlpine CentOS 8 Debian 10 Firewall Ubuntu 20.04
0 comments… add one

Leave a Reply

Your email address will not be published.

Use HTML <pre>...</pre> for code samples. Still have questions? Post it on our forum