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Category:   Application (Security)  >   Red Hat Certificate Server Vendors:   Red Hat
Red Hat Certificate System Bugs Let Remote Users Conduct Cross-Site Scripting and Denial of Service Attacks
SecurityTracker Alert ID:  1027284
SecurityTracker URL:  http://securitytracker.com/id/1027284
CVE Reference:   CVE-2012-2662, CVE-2012-3367   (Links to External Site)
Date:  Jul 19 2012
Impact:   Denial of service via network, Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 8.1
Description:   Two vulnerabilities were reported in Red Hat Certificate System. A remote user can conduct cross-site scripting attacks. A remote authenticated user can revoke the CA certificate.

The Agent and End Entity pages do not properly filter HTML code from user-supplied input before displaying the input [CVE-2012-2662]. A remote user can cause arbitrary scripting code to be executed by the target user's browser. The code will originate from the site running the Red Hat Certificate System software and will run in the security context of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

The Certificate Manager web interface does not properly check certificate revocation requests [CVE-2012-3367]. A remote authenticated agent with permissions to perform revocations of end entity certificates can revoke the Certificate Authority (CA) certificate.

Impact:   A remote authenticated user can revoke the CA certificate.

A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the Red Hat Certificate System software, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

Solution:   The vendor has issued a fix.

The vendor's advisory is available at:

https://rhn.redhat.com/errata/RHSA-2012-1103.html

Vendor URL:  rhn.redhat.com/errata/RHSA-2012-1103.html (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Red Hat Enterprise)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Jul 24 2015 (Red Hat Issues Fix) Red Hat Certificate System Bugs Let Remote Users Conduct Cross-Site Scripting and Denial of Service Attacks
Red Hat has issued a fix for Red Hat Enterprise Linux 6.



 Source Message Contents

Subject:  [RHSA-2012:1103-01] Moderate: pki security and enhancement update

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

Synopsis:          Moderate: pki security and enhancement update
Advisory ID:       RHSA-2012:1103-01
Product:           Red Hat Certificate System
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2012-1103.html
Issue date:        2012-07-19
CVE Names:         CVE-2012-2662 CVE-2012-3367 
=====================================================================

1. Summary:

Updated pki-common, pki-tps and pki-util packages that fix multiple
security issues and add one enhancement are now available for Red Hat
Certificate System 8.1.

The Red Hat Security Response Team has rated this update as having moderate
security impact. Common Vulnerability Scoring System (CVSS) base scores,
which give detailed severity ratings, are available for each vulnerability
from the CVE links in the References section.

2. Relevant releases/architectures:

Red Hat Certificate System 8 - i386, noarch, x86_64

3. Description:

Red Hat Certificate System is an enterprise software system designed to
manage enterprise Public Key Infrastructure (PKI) deployments.

Multiple cross-site scripting flaws were discovered in the Red Hat
Certificate System Agent and End Entity pages. An attacker could use these
flaws to perform a cross-site scripting (XSS) attack against victims using
Certificate System's web interface. (CVE-2012-2662)

It was discovered that Red Hat Certificate System's Certificate Manager
did not properly check certificate revocation requests performed via its
web interface. An agent permitted to perform revocations of end entity
certificates could use this flaw to revoke the Certificate Authority (CA)
certificate. (CVE-2012-3367)

This update also adds the following enhancement:

* Red Hat Certificate System 8.1 did not previously allow using Red Hat
Directory Server 9.0 as its internal database. This update adds support
for Directory Server 9.0. (BZ#547527, BZ#819508)

All users of Red Hat Certificate System 8.1 are advised to upgrade to these
updated packages, which correct these issues and add this enhancement.
After installing this update, all Red Hat Certificate System subsystems
must be restarted for the update to take effect.

4. 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/knowledge/articles/11258

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

547527 - dogtag does not work with latest 389 DS
826646 - CVE-2012-2662 Certificate System: multiple XSS flaws
836268 - CVE-2012-3367 Certificate System: CA certificate can be revoked

6. Package List:

Red Hat Certificate System 8:

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/RHCERT/SRPMS/pki-common-8.1.1-1.el5pki.src.rpm
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/RHCERT/SRPMS/pki-tps-8.1.1-1.el5pki.src.rpm
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/RHCERT/SRPMS/pki-util-8.1.1-1.el5pki.src.rpm

i386:
pki-tps-8.1.1-1.el5pki.i386.rpm

noarch:
pki-common-8.1.1-1.el5pki.noarch.rpm
pki-common-javadoc-8.1.1-1.el5pki.noarch.rpm
pki-util-8.1.1-1.el5pki.noarch.rpm
pki-util-javadoc-8.1.1-1.el5pki.noarch.rpm

x86_64:
pki-tps-8.1.1-1.el5pki.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://access.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2012-2662.html
https://www.redhat.com/security/data/cve/CVE-2012-3367.html
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

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

Copyright 2012 Red Hat, Inc.
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