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Category:   Application (Generic)  >   ed Vendors:   GNU [multiple authors]
(Red Hat Issues Fix) GNU ed Heap Overflow in strip_escapes() Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1021078
SecurityTracker URL:  http://securitytracker.com/id/1021078
CVE Reference:   CVE-2008-3916   (Links to External Site)
Date:  Oct 21 2008
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 1.0
Description:   A vulnerability was reported in GNU ed. A remote user can cause arbitrary code to be executed on the target user's system.

A remote user can create a specially crafted file that, when processed by the target user, will trigger a heap overflow and potentially execute arbitrary code on the target system. The code will run with the privileges of the target user.

The vulnerability resides in 'signal.c'.
Impact:   A remote user can create a file that, when processed by the target user, will execute arbitrary code on the target user's system.
Solution:   Red Hat has released a fix.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2008-0946.html
Vendor URL:  www.gnu.org/software/ed/ed.html (Links to External Site)
Cause:   Boundary error
Underlying OS:   Linux (Red Hat Enterprise)

Message History:   This archive entry is a follow-up to the message listed below.
Aug 25 2008 GNU ed Heap Overflow in strip_escapes() Lets Remote Users Execute Arbitrary Code


 Source Message Contents
Date:  Tue, 21 Oct 2008 11:21:03 -0400
Subject:  [RHSA-2008:0946-01] Moderate: ed security update


-----BEGIN PGP SIGNED MESSAGE-----
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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Moderate: ed security update
Advisory ID:       RHSA-2008:0946-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2008-0946.html
Issue date:        2008-10-21
CVE Names:         CVE-2008-3916 
=====================================================================

1. Summary:

An updated ed package that fixes one security issue is now available for
Red Hat Enterprise Linux 2.1, 3, 4 and 5.

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

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
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:

ed is a line-oriented text editor, used to create, display, and modify
text files (both interactively and via shell scripts).

A heap-based buffer overflow was discovered in the way ed, the GNU line
editor, processed long file names. An attacker could create a file with a
specially-crafted name that could possibly execute an arbitrary code when
opened in the ed editor. (CVE-2008-3916)

Users of ed should upgrade to this updated package, which contains
a backported patch to resolve this issue.

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/):

462584 - CVE-2008-3916 ed: Heap-based buffer overflow (arb. code execution)

6. Package List:

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

Source:
ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/ed-0.2-21.1.src.rpm

i386:
ed-0.2-21.1.i386.rpm

ia64:
ed-0.2-21.1.ia64.rpm

Red Hat Linux Advanced Workstation 2.1:

Source:
ftp://updates.redhat.com/enterprise/2.1AW/en/os/SRPMS/ed-0.2-21.1.src.rpm

ia64:
ed-0.2-21.1.ia64.rpm

Red Hat Enterprise Linux ES version 2.1:

Source:
ftp://updates.redhat.com/enterprise/2.1ES/en/os/SRPMS/ed-0.2-21.1.src.rpm

i386:
ed-0.2-21.1.i386.rpm

Red Hat Enterprise Linux WS version 2.1:

Source:
ftp://updates.redhat.com/enterprise/2.1WS/en/os/SRPMS/ed-0.2-21.1.src.rpm

i386:
ed-0.2-21.1.i386.rpm

Red Hat Enterprise Linux AS version 3:

Source:
ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/ed-0.2-33.30E.1.src.rpm

i386:
ed-0.2-33.30E.1.i386.rpm
ed-debuginfo-0.2-33.30E.1.i386.rpm

ia64:
ed-0.2-33.30E.1.ia64.rpm
ed-debuginfo-0.2-33.30E.1.ia64.rpm

ppc:
ed-0.2-33.30E.1.ppc.rpm
ed-debuginfo-0.2-33.30E.1.ppc.rpm

s390:
ed-0.2-33.30E.1.s390.rpm
ed-debuginfo-0.2-33.30E.1.s390.rpm

s390x:
ed-0.2-33.30E.1.s390x.rpm
ed-debuginfo-0.2-33.30E.1.s390x.rpm

x86_64:
ed-0.2-33.30E.1.x86_64.rpm
ed-debuginfo-0.2-33.30E.1.x86_64.rpm

Red Hat Desktop version 3:

Source:
ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/ed-0.2-33.30E.1.src.rpm

i386:
ed-0.2-33.30E.1.i386.rpm
ed-debuginfo-0.2-33.30E.1.i386.rpm

x86_64:
ed-0.2-33.30E.1.x86_64.rpm
ed-debuginfo-0.2-33.30E.1.x86_64.rpm

Red Hat Enterprise Linux ES version 3:

Source:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/ed-0.2-33.30E.1.src.rpm

i386:
ed-0.2-33.30E.1.i386.rpm
ed-debuginfo-0.2-33.30E.1.i386.rpm

ia64:
ed-0.2-33.30E.1.ia64.rpm
ed-debuginfo-0.2-33.30E.1.ia64.rpm

x86_64:
ed-0.2-33.30E.1.x86_64.rpm
ed-debuginfo-0.2-33.30E.1.x86_64.rpm

Red Hat Enterprise Linux WS version 3:

Source:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/ed-0.2-33.30E.1.src.rpm

i386:
ed-0.2-33.30E.1.i386.rpm
ed-debuginfo-0.2-33.30E.1.i386.rpm

ia64:
ed-0.2-33.30E.1.ia64.rpm
ed-debuginfo-0.2-33.30E.1.ia64.rpm

x86_64:
ed-0.2-33.30E.1.x86_64.rpm
ed-debuginfo-0.2-33.30E.1.x86_64.rpm

Red Hat Enterprise Linux AS version 4:

Source:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/ed-0.2-36.el4_7.1.src.rpm

i386:
ed-0.2-36.el4_7.1.i386.rpm
ed-debuginfo-0.2-36.el4_7.1.i386.rpm

ia64:
ed-0.2-36.el4_7.1.ia64.rpm
ed-debuginfo-0.2-36.el4_7.1.ia64.rpm

ppc:
ed-0.2-36.el4_7.1.ppc.rpm
ed-debuginfo-0.2-36.el4_7.1.ppc.rpm

s390:
ed-0.2-36.el4_7.1.s390.rpm
ed-debuginfo-0.2-36.el4_7.1.s390.rpm

s390x:
ed-0.2-36.el4_7.1.s390x.rpm
ed-debuginfo-0.2-36.el4_7.1.s390x.rpm

x86_64:
ed-0.2-36.el4_7.1.x86_64.rpm
ed-debuginfo-0.2-36.el4_7.1.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

Source:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/ed-0.2-36.el4_7.1.src.rpm

i386:
ed-0.2-36.el4_7.1.i386.rpm
ed-debuginfo-0.2-36.el4_7.1.i386.rpm

x86_64:
ed-0.2-36.el4_7.1.x86_64.rpm
ed-debuginfo-0.2-36.el4_7.1.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

Source:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/ed-0.2-36.el4_7.1.src.rpm

i386:
ed-0.2-36.el4_7.1.i386.rpm
ed-debuginfo-0.2-36.el4_7.1.i386.rpm

ia64:
ed-0.2-36.el4_7.1.ia64.rpm
ed-debuginfo-0.2-36.el4_7.1.ia64.rpm

x86_64:
ed-0.2-36.el4_7.1.x86_64.rpm
ed-debuginfo-0.2-36.el4_7.1.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

Source:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/ed-0.2-36.el4_7.1.src.rpm

i386:
ed-0.2-36.el4_7.1.i386.rpm
ed-debuginfo-0.2-36.el4_7.1.i386.rpm

ia64:
ed-0.2-36.el4_7.1.ia64.rpm
ed-debuginfo-0.2-36.el4_7.1.ia64.rpm

x86_64:
ed-0.2-36.el4_7.1.x86_64.rpm
ed-debuginfo-0.2-36.el4_7.1.x86_64.rpm

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

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/ed-0.2-39.el5_2.src.rpm

i386:
ed-0.2-39.el5_2.i386.rpm
ed-debuginfo-0.2-39.el5_2.i386.rpm

x86_64:
ed-0.2-39.el5_2.x86_64.rpm
ed-debuginfo-0.2-39.el5_2.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/ed-0.2-39.el5_2.src.rpm

i386:
ed-0.2-39.el5_2.i386.rpm
ed-debuginfo-0.2-39.el5_2.i386.rpm

ia64:
ed-0.2-39.el5_2.ia64.rpm
ed-debuginfo-0.2-39.el5_2.ia64.rpm

ppc:
ed-0.2-39.el5_2.ppc.rpm
ed-debuginfo-0.2-39.el5_2.ppc.rpm

s390x:
ed-0.2-39.el5_2.s390x.rpm
ed-debuginfo-0.2-39.el5_2.s390x.rpm

x86_64:
ed-0.2-39.el5_2.x86_64.rpm
ed-debuginfo-0.2-39.el5_2.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-2008-3916
http://www.redhat.com/security/updates/classification/#moderate

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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