Articles / Red Hat: An updated elinks …

Red Hat: An updated elinks package fixes two security issues

ELinks is a text-based Web browser. An off-by-one buffer overflow flaw was discovered in the way ELinks handled its internal cache of string representations for HTML special entities that would cause ELinks to crash or, possibly, execute arbitrary code when rendered. It was discovered that ELinks tried to load translation files using relative paths, which could be used to confuse the victim via incorrect translations, or cause ELinks to crash and possibly execute arbitrary code via embedded formatting sequences in translated messages. Updated packages are available from updates.redhat.com.

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

Synopsis:          Important: elinks security update
Advisory ID:       RHSA-2009:1471-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2009-1471.html
Issue date:        2009-10-01
CVE Names:         CVE-2007-2027 CVE-2008-7224 
=====================================================================

1. Summary:

An updated elinks package that fixes two security issues is now available
for Red Hat Enterprise Linux 4 and 5.

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

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux Desktop version 4 - i386, x86_64
Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

3. Description:

ELinks is a text-based Web browser. ELinks does not display any images, but
it does support frames, tables, and most other HTML tags.

An off-by-one buffer overflow flaw was discovered in the way ELinks handled
its internal cache of string representations for HTML special entities. A
remote attacker could use this flaw to create a specially-crafted HTML file
that would cause ELinks to crash or, possibly, execute arbitrary code when
rendered. (CVE-2008-7224)

It was discovered that ELinks tried to load translation files using
relative paths. A local attacker able to trick a victim into running ELinks
in a folder containing specially-crafted translation files could use this
flaw to confuse the victim via incorrect translations, or cause ELinks to
crash and possibly execute arbitrary code via embedded formatting sequences
in translated messages. (CVE-2007-2027)

All ELinks users are advised to upgrade to this updated package, which
contains backported patches to resolve these issues.

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/docs/DOC-11259

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

235411 - CVE-2007-2027 elinks tries to load .po files from a non-absolute path
523258 - CVE-2008-7224 elinks: entity_cache static array buffer overflow (off-by-one)

6. Package List:

Red Hat Enterprise Linux AS version 4:

Source:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/elinks-0.9.2-4.el4_8.1.src.rpm

i386:
elinks-0.9.2-4.el4_8.1.i386.rpm
elinks-debuginfo-0.9.2-4.el4_8.1.i386.rpm

ia64:
elinks-0.9.2-4.el4_8.1.ia64.rpm
elinks-debuginfo-0.9.2-4.el4_8.1.ia64.rpm

ppc:
elinks-0.9.2-4.el4_8.1.ppc.rpm
elinks-debuginfo-0.9.2-4.el4_8.1.ppc.rpm

s390:
elinks-0.9.2-4.el4_8.1.s390.rpm
elinks-debuginfo-0.9.2-4.el4_8.1.s390.rpm

s390x:
elinks-0.9.2-4.el4_8.1.s390x.rpm
elinks-debuginfo-0.9.2-4.el4_8.1.s390x.rpm

x86_64:
elinks-0.9.2-4.el4_8.1.x86_64.rpm
elinks-debuginfo-0.9.2-4.el4_8.1.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

Source:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/elinks-0.9.2-4.el4_8.1.src.rpm

i386:
elinks-0.9.2-4.el4_8.1.i386.rpm
elinks-debuginfo-0.9.2-4.el4_8.1.i386.rpm

x86_64:
elinks-0.9.2-4.el4_8.1.x86_64.rpm
elinks-debuginfo-0.9.2-4.el4_8.1.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

Source:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/elinks-0.9.2-4.el4_8.1.src.rpm

i386:
elinks-0.9.2-4.el4_8.1.i386.rpm
elinks-debuginfo-0.9.2-4.el4_8.1.i386.rpm

ia64:
elinks-0.9.2-4.el4_8.1.ia64.rpm
elinks-debuginfo-0.9.2-4.el4_8.1.ia64.rpm

x86_64:
elinks-0.9.2-4.el4_8.1.x86_64.rpm
elinks-debuginfo-0.9.2-4.el4_8.1.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

Source:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/elinks-0.9.2-4.el4_8.1.src.rpm

i386:
elinks-0.9.2-4.el4_8.1.i386.rpm
elinks-debuginfo-0.9.2-4.el4_8.1.i386.rpm

ia64:
elinks-0.9.2-4.el4_8.1.ia64.rpm
elinks-debuginfo-0.9.2-4.el4_8.1.ia64.rpm

x86_64:
elinks-0.9.2-4.el4_8.1.x86_64.rpm
elinks-debuginfo-0.9.2-4.el4_8.1.x86_64.rpm

Red Hat Enterprise Linux Desktop (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/elinks-0.11.1-6.el5_4.1.src.rpm

i386:
elinks-0.11.1-6.el5_4.1.i386.rpm
elinks-debuginfo-0.11.1-6.el5_4.1.i386.rpm

x86_64:
elinks-0.11.1-6.el5_4.1.x86_64.rpm
elinks-debuginfo-0.11.1-6.el5_4.1.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/elinks-0.11.1-6.el5_4.1.src.rpm

i386:
elinks-0.11.1-6.el5_4.1.i386.rpm
elinks-debuginfo-0.11.1-6.el5_4.1.i386.rpm

ia64:
elinks-0.11.1-6.el5_4.1.ia64.rpm
elinks-debuginfo-0.11.1-6.el5_4.1.ia64.rpm

ppc:
elinks-0.11.1-6.el5_4.1.ppc.rpm
elinks-debuginfo-0.11.1-6.el5_4.1.ppc.rpm

s390x:
elinks-0.11.1-6.el5_4.1.s390x.rpm
elinks-debuginfo-0.11.1-6.el5_4.1.s390x.rpm

x86_64:
elinks-0.11.1-6.el5_4.1.x86_64.rpm
elinks-debuginfo-0.11.1-6.el5_4.1.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-2007-2027
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-7224
http://www.redhat.com/security/updates/classification/#important

8. Contact:

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

Copyright 2009 Red Hat, Inc.
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