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Published:

03 February 2005

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                     ESB-2005.0102 -- RHSA-2005:039-01
              Updated enscript package fixes security issues
                              3 February 2005

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           enscript
Publisher:         Red Hat
Operating System:  Red Hat Enterprise Linux AS/ES/WS 3
                   Red Hat Desktop version 3
                   Red Hat Enterprise Linux AS/ES/WS 2.1
                   Red Hat Linux Advanced Workstation 2.1
                   Linux variants
                   UNIX variants
Impact:            Execute Arbitrary Code/Commands
                   Denial of Service
Access:            Remote/Unauthenticated
CVE Names:         CAN-2004-1186 CAN-2004-1185 CAN-2004-1184

Original Bulletin: https://rhn.redhat.com/errata/RHSA-2005-039.html

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                   Red Hat Security Advisory

Synopsis:          Updated enscript package fixes security issues
Advisory ID:       RHSA-2005:039-01
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2005-039.html
Issue date:        2005-02-01
Updated on:        2005-02-01
Product:           Red Hat Enterprise Linux
CVE Names:         CAN-2004-1184 CAN-2004-1185 CAN-2004-1186
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1. Summary:

An updated enscript package that fixes several security issues is now
available.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1 - i386, ia64
Red Hat Linux Advanced Workstation 2.1 - ia64
Red Hat Enterprise Linux ES version 2.1 - i386
Red Hat Enterprise Linux WS version 2.1 - i386
Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Desktop version 3 - i386, x86_64
Red Hat Enterprise Linux ES version 3 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64

3. Problem description:

GNU enscript converts ASCII files to PostScript.

Enscript has the ability to interpret special escape sequences. A flaw was
found in the handling of the epsf command used to insert inline EPS files
into a document. An attacker could create a carefully crafted ASCII file
which made use of the epsf pipe command in such a way that it could execute
arbitrary commands if the file was opened with enscript by a victim. The
Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned
the name CAN-2004-1184 to this issue.

Additional flaws in Enscript were also discovered which can only be
triggered by executing enscript with carefully crafted command line
arguments. These flaws therefore only have a security impact if enscript
is executed by other programs and passed untrusted data from remote users.
The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the names CAN-2004-1185 and CAN-2004-1186 to these issues.

All users of enscript should upgrade to these updated packages, which
resolve these issues.

4. Solution:

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.  Use Red Hat
Network to download and update your packages.  To launch the Red Hat
Update Agent, use the following command:

    up2date

For information on how to install packages manually, refer to the
following Web page for the System Administration or Customization
guide specific to your system:

    http://www.redhat.com/docs/manuals/enterprise/

5. Bug IDs fixed (http://bugzilla.redhat.com/):

144683 - CAN-2004-1184 multiple security issues in enscript (CAN-2004-1185 CAN-2004-1186)

6. RPMs required:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/enscript-1.6.1-16.5.src.rpm
8e405e471e4419319c6ac65c80d02d5c  enscript-1.6.1-16.5.src.rpm

i386:
9f3d90e1f1d723669b77f7f814f15923  enscript-1.6.1-16.5.i386.rpm

ia64:
872542b1728ba95a680a703fd49b88ab  enscript-1.6.1-16.5.ia64.rpm

Red Hat Linux Advanced Workstation 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1AW/en/os/SRPMS/enscript-1.6.1-16.5.src.rpm
8e405e471e4419319c6ac65c80d02d5c  enscript-1.6.1-16.5.src.rpm

ia64:
872542b1728ba95a680a703fd49b88ab  enscript-1.6.1-16.5.ia64.rpm

Red Hat Enterprise Linux ES version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1ES/en/os/SRPMS/enscript-1.6.1-16.5.src.rpm
8e405e471e4419319c6ac65c80d02d5c  enscript-1.6.1-16.5.src.rpm

i386:
9f3d90e1f1d723669b77f7f814f15923  enscript-1.6.1-16.5.i386.rpm

Red Hat Enterprise Linux WS version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1WS/en/os/SRPMS/enscript-1.6.1-16.5.src.rpm
8e405e471e4419319c6ac65c80d02d5c  enscript-1.6.1-16.5.src.rpm

i386:
9f3d90e1f1d723669b77f7f814f15923  enscript-1.6.1-16.5.i386.rpm

Red Hat Enterprise Linux AS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/enscript-1.6.1-24.4.src.rpm
25774a6b655e1b1b1647b5b45a70ddee  enscript-1.6.1-24.4.src.rpm

i386:
8396407a881a05c9a139a1d324f179f8  enscript-1.6.1-24.4.i386.rpm

ia64:
93bfe25753b73dbcaa8390a82671cf09  enscript-1.6.1-24.4.ia64.rpm

ppc:
3ca7dfe2d1b9525000c5483c697de3e1  enscript-1.6.1-24.4.ppc.rpm

s390:
b54d139ecc5862c27517afa75adcc376  enscript-1.6.1-24.4.s390.rpm

s390x:
069ca11ef416ffd0914bd72fba54cbdb  enscript-1.6.1-24.4.s390x.rpm

x86_64:
abc897af6cc5379b87964c7d03d3ad8f  enscript-1.6.1-24.4.x86_64.rpm

Red Hat Desktop version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/enscript-1.6.1-24.4.src.rpm
25774a6b655e1b1b1647b5b45a70ddee  enscript-1.6.1-24.4.src.rpm

i386:
8396407a881a05c9a139a1d324f179f8  enscript-1.6.1-24.4.i386.rpm

x86_64:
abc897af6cc5379b87964c7d03d3ad8f  enscript-1.6.1-24.4.x86_64.rpm

Red Hat Enterprise Linux ES version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/enscript-1.6.1-24.4.src.rpm
25774a6b655e1b1b1647b5b45a70ddee  enscript-1.6.1-24.4.src.rpm

i386:
8396407a881a05c9a139a1d324f179f8  enscript-1.6.1-24.4.i386.rpm

ia64:
93bfe25753b73dbcaa8390a82671cf09  enscript-1.6.1-24.4.ia64.rpm

x86_64:
abc897af6cc5379b87964c7d03d3ad8f  enscript-1.6.1-24.4.x86_64.rpm

Red Hat Enterprise Linux WS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/enscript-1.6.1-24.4.src.rpm
25774a6b655e1b1b1647b5b45a70ddee  enscript-1.6.1-24.4.src.rpm

i386:
8396407a881a05c9a139a1d324f179f8  enscript-1.6.1-24.4.i386.rpm

ia64:
93bfe25753b73dbcaa8390a82671cf09  enscript-1.6.1-24.4.ia64.rpm

x86_64:
abc897af6cc5379b87964c7d03d3ad8f  enscript-1.6.1-24.4.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=CAN-2004-1184
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1185
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1186

8. Contact:

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

Copyright 2005 Red Hat, Inc.

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