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AUSCERT External Security Bulletin Redistribution
ESB-2008.0719 -- [RedHat]
Moderate: rhpki-util, rhpki-common, and rhpki-ca security
and bug fix update
22 July 2008
AusCERT Security Bulletin Summary
Publisher: Red Hat
Operating System: Red Hat Linux 4
Impact: Provide Misleading Information
Access: Existing Account
CVE Names: CVE-2007-4994
Original Bulletin: https://rhn.redhat.com/errata/RHSA-2008-0566.html
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Red Hat Security Advisory
Synopsis: Moderate: rhpki-util, rhpki-common, and rhpki-ca security and bug fix update
Advisory ID: RHSA-2008:0566-01
Product: Red Hat Certificate System
Advisory URL: https://rhn.redhat.com/errata/RHSA-2008-0566.html
Issue date: 2008-07-21
CVE Names: CVE-2007-4994
Updated rhpki-util, rhpki-common, and rhpki-ca packages that fix a security
issue and several bugs are now available for Red Hat Certificate System
This update has been rated as having moderate security impact by the Red
Hat Security Response Team.
2. Relevant releases/architectures:
Red Hat Certificate System 7.3 for 4AS - noarch
Red Hat Certificate System 7.3 for 4ES - noarch
Red Hat Certificate System (RHCS) is an enterprise software system designed
to manage enterprise Public Key Infrastructure (PKI) deployments.
It was discovered that new revocations, performed while a Certificate
Revocation List (CRL) was being generated, could potentially cause revoked
certificates at the upper end of the serial number range to not appear on
the CRL for a period of time. A user who has a revoked but otherwise valid
certificate could take advantage of this issue and bypass the revocation
list; however, in practice, they would have no way of influencing which
revoked certificate entries were missing or the time period.
As well, these updated packages fix the following bugs:
* due to a regression, signing a CRL with approximately 150,000 records may
have taken up to five minutes. In these updated packages, signing such CRLs
takes approximately twenty seconds.
* a bug, which resulted in a 404 error, due to servers not handling Online
Certificate Status Protocol (OCSP) requests in the GET method, has been
resolved. This issue may have caused a system to use 100% CPU. As well,
OCSP requests are now logged to the debug log file.
* it was possible for a CRL update to run at the same time as a certificate
status update. Now, CRL updating locks out the certificate status update
* inefficient LDAP search methods caused LDAP searches for a large number
of revoked certificates to take up to twenty minutes or more for 100,000
certificates during CRL generation. The LDAP search method has been
modified to greatly improve LDAP search times.
* the default OCSP verification path has changed since RHCS 7.1. These
updated packages add support for certificates that use the old
AuthorityInfoAccess (AIA) URL.
* an OCSP client submitting an OCSP request via the GET method may have
caused a "NullPointerException".
* if an agent automatically approved a certificate signing request (CSR),
using AgentCertAuth, the resultant certificate contained blank Subject Alt
Name extension fields. A manual enrollment by the same agent produced a
certificate with the correct number of Subject Alt Names and no blank
entries. With this update, automated enrollments via AgentCertAuth do not
have blank fields in issued certificates.
Users of Red Hat Certificate System should upgrade to these updated
packages, which resolve these issues.
Users running Red Hat Certificate System on Red Hat Enterprise Linux:
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
Users running Red Hat Certificate System on Sun Solaris:
Updated Solaris packages in .pkg format are available in the Red Hat
Certificate System Solaris channels on the Red Hat Network. These packages
should be installed/upgraded using Solaris native package management tools.
Refer to the Red Hat Certificate System Administration Guide for
installation instructions: http://www.redhat.com/docs/manuals/cert-system/
5. Bugs fixed (http://bugzilla.redhat.com/):
304571 - CVE-2007-4994 rhcs CRL can get corrupted
6. Package List:
Red Hat Certificate System 7.3 for 4AS:
Red Hat Certificate System 7.3 for 4ES:
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
The Red Hat security contact is <firstname.lastname@example.org>. More contact
details at https://www.redhat.com/security/team/contact/
Copyright 2008 Red Hat, Inc.
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