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Category:   Application (Generic)  >   Condor Vendors:   University of Wisconsin-Madison
(Red Hat Issues Fix) Condor Bugs Let Local Users Gain Elevated Privileges or Deny Service
SecurityTracker Alert ID:  1021003
SecurityTracker URL:  http://securitytracker.com/id/1021003
CVE Reference:   CVE-2008-3826, CVE-2008-3828, CVE-2008-3829, CVE-2008-3830   (Links to External Site)
Date:  Oct 8 2008
Impact:   Denial of service via local system, Execution of arbitrary code via local system, User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 7.1 prior to 7.1.3
Description:   Several vulnerabilities were reported in Condor. A local user can obtain elevated privileges on the target system. A local user can cause denial of service conditions.

A local user can submit a job to cause the job to run with different user privileges [CVE-2008-3826].

A local user with privileges to submit a job can trigger a stack overflow in the condor_schedd daemon [CVE-2008-3828].

A local user with privileges to submit a job can cause the condor_schedd daemon to crash [CVE-2008-3829].

If a configuration file contains an overlapping netmask in the allow or deny rules, the rule may be ignored [CVE-2008-3830].

Impact:   A local user can obtain condor_schedd daemon privileges on the target system.

A local user can run jobs with the privileges of another user.

A local user can cause the condor_schedd daemon to crash.

Solution:   Red Hat has released a fix.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2008-0924.html

Vendor URL:  www.cs.wisc.edu/condor/ (Links to External Site)
Cause:   Access control error, Boundary error, State error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  5

Message History:   This archive entry is a follow-up to the message listed below.
Oct 8 2008 Condor Bugs Let Local Users Gain Elevated Privileges or Deny Service



 Source Message Contents

Subject:  [RHSA-2008:0911-01] Moderate: condor security,


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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Moderate: condor security, bug fix and enhancement update
Advisory ID:       RHSA-2008:0911-01
Product:           Red Hat Enterprise MRG for RHEL-5
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2008-0911.html
Issue date:        2008-10-07
CVE Names:         CVE-2008-3826 CVE-2008-3828 CVE-2008-3829 
                   CVE-2008-3830 
=====================================================================

1. Summary:

Updated condor packages that address multiple security issues, fix several
bugs, and introduce feature enhancements are now available for Red Hat
Enterprise MRG 1.0 for Red Hat Enterprise Linux 5.

This update has been rated as having moderate security impact by the Red
Hat Security Response Team.

2. Relevant releases/architectures:

MRG Grid for RHEL 5 Server - i386, x86_64

3. Description:

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 processed user submitted jobs. It was
possible for a user to submit a job in a way that could cause that job to
run as a different user with access to the pool. (CVE-2008-3826)

A stack based buffer overflow flaw was found in Condor's condor_schedd
daemon. A user who had permissions to submit a job could do so in a manner
that could cause condor_schedd to crash or, potentially, execute arbitrary
code with the permissions of condor_schedd. (CVE-2008-3828)

A denial-of-service flaw was found in Condor's condor_schedd daemon. A user
who had permissions to submit a job could do so in a manner that would
cause condor_schedd to crash. (CVE-2008-3829)

A flaw was found in the way Condor processes allowed and denied netmasks
for access control. If a configuration file contained an overlapping
netmask in the allow or deny rules, it could cause that rule to be ignored,
allowing unintended access. (CVE-2008-3830)


This update also fixes the following bugs:

* the "amazon_gahp -m" command sets the AMAZON_GAHP_WORKER_MAX_NUM
configuration option, fixing the maximum number of processes contacting EC2
at any given time. Previously, Condor did not honor this option, leaving
the maximum number of created threads unbounded. This has been corrected:
values set with the "-m" argument are now properly understood.

* the gridmanager constructed KeyPairs for all outstanding EC2 jobs before
any jobs are started. When there were many (>10,000) EC2 jobs in the queue,
significant delays occurred. With this update, KeyPairs are no longer 
constructed up-front.

* an error in condor_negotiator caused intialization code to re-run
whenever condor_reconfig was run. The flag which noted if the
initialization code should run was always set to "true". This error has
been corrected: the initialization code now executes only at startup.


As well, this update adds the following enhancements:

* this release introduces Concurrency Limits. These allow Condor to account
for resources not directly under its control, such as software licenses.

* this update includes the latest stable upstream release of Condor:
version 7.0.5. Information on the features and fixes included with this
release are in the Condor Release Notes, available via the link in the
References section below.

* base support for low-latency scheduling and transparent translation of
EC2 jobs has also been added in this update. Note: implementation of these
two features depends on separate packages which are yet to be released.

All Red Hat Enterprise MRG 1.0 users are advised to upgrade to these
updated packages which address these vulnerabilities, fix these bugs and
add these enhancements.

4. Solution:

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

This update is available via Red Hat Network.  Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/FAQ_58_10188

5. Bugs fixed (http://bugzilla.redhat.com/):

451069 - gSOAP amazon-gahp needs max to worker pool
451799 - upfront construction of ec2 KeyPairs is time consuming
462662 - SetAttribute does not check validity of attribute's name
463987 - CVE-2008-3826 condor: users can run jobs with arbitrary owners
463990 - CVE-2008-3828 condor: buffer overflow in lookup_macro
463995 - CVE-2008-3829 condor: denial of service attack on Schedd via corrupt logfile
463997 - CVE-2008-3830 condor: allow or deny with overlapping netmasks may be ignored

6. Package List:

MRG Grid for RHEL 5 Server:

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/RHEMRG/SRPMS/condor-7.0.5-2.el5.src.rpm

i386:
condor-7.0.5-2.el5.i386.rpm
condor-debuginfo-7.0.5-2.el5.i386.rpm
condor-static-7.0.5-2.el5.i386.rpm

x86_64:
condor-7.0.5-2.el5.x86_64.rpm
condor-debuginfo-7.0.5-2.el5.x86_64.rpm
condor-static-7.0.5-2.el5.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and 
details on how to verify the signature are available from
https://www.redhat.com/security/team/key/#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3826
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3828
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3829
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3830
http://www.redhat.com/security/updates/classification/#moderate

http://cs.wisc.edu/condor/manual/v7.0/8_3Stable_Release.html




8. Contact:

The Red Hat security contact is <secalert@redhat.com>.  More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2008 Red Hat, Inc.
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