| 1 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 2 |
Gentoo Linux Security Advisory GLSA 200703-24 |
| 3 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 4 |
http://security.gentoo.org/ |
| 5 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 6 |
|
| 7 |
Severity: Normal |
| 8 |
Title: mgv: Stack overflow in included gv code |
| 9 |
Date: March 26, 2007 |
| 10 |
Bugs: #154645 |
| 11 |
ID: 200703-24 |
| 12 |
|
| 13 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 14 |
|
| 15 |
Synopsis |
| 16 |
======== |
| 17 |
|
| 18 |
mgv improperly handles user-supplied data possibly allowing for the |
| 19 |
execution of arbitrary code. |
| 20 |
|
| 21 |
Background |
| 22 |
========== |
| 23 |
|
| 24 |
mgv is a Postscript viewer with a Motif interface, based on Ghostview |
| 25 |
and GNU gv. |
| 26 |
|
| 27 |
Affected packages |
| 28 |
================= |
| 29 |
|
| 30 |
------------------------------------------------------------------- |
| 31 |
Package / Vulnerable / Unaffected |
| 32 |
------------------------------------------------------------------- |
| 33 |
1 app-text/mgv <= 3.1.5 Vulnerable! |
| 34 |
------------------------------------------------------------------- |
| 35 |
NOTE: Certain packages are still vulnerable. Users should migrate |
| 36 |
to another package if one is available or wait for the |
| 37 |
existing packages to be marked stable by their |
| 38 |
architecture maintainers. |
| 39 |
|
| 40 |
Description |
| 41 |
=========== |
| 42 |
|
| 43 |
mgv includes code from gv that does not properly boundary check |
| 44 |
user-supplied data before copying it into process buffers. |
| 45 |
|
| 46 |
Impact |
| 47 |
====== |
| 48 |
|
| 49 |
An attacker could entice a user to open a specially crafted Postscript |
| 50 |
document with mgv and possibly execute arbitrary code with the rights |
| 51 |
of the user running mgv. |
| 52 |
|
| 53 |
Workaround |
| 54 |
========== |
| 55 |
|
| 56 |
There is no known workaround at this time. |
| 57 |
|
| 58 |
Resolution |
| 59 |
========== |
| 60 |
|
| 61 |
mgv is currently unmaintained, and the mgv website no longer exists. As |
| 62 |
such, the mgv package has been masked in Portage. We recommend that |
| 63 |
users select an alternate Postscript viewer such as ghostview or |
| 64 |
GSview, and unmerge mgv: |
| 65 |
|
| 66 |
# emerge --unmerge "app-text/mgv" |
| 67 |
|
| 68 |
References |
| 69 |
========== |
| 70 |
|
| 71 |
[ 1 ] CVE-2006-5864 |
| 72 |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5864 |
| 73 |
[ 2 ] GLSA 200611-20 |
| 74 |
http://www.gentoo.org/security/en/glsa/glsa-200611-20.xml |
| 75 |
|
| 76 |
Availability |
| 77 |
============ |
| 78 |
|
| 79 |
This GLSA and any updates to it are available for viewing at |
| 80 |
the Gentoo Security Website: |
| 81 |
|
| 82 |
http://security.gentoo.org/glsa/glsa-200703-24.xml |
| 83 |
|
| 84 |
Concerns? |
| 85 |
========= |
| 86 |
|
| 87 |
Security is a primary focus of Gentoo Linux and ensuring the |
| 88 |
confidentiality and security of our users machines is of utmost |
| 89 |
importance to us. Any security concerns should be addressed to |
| 90 |
security@g.o or alternatively, you may file a bug at |
| 91 |
http://bugs.gentoo.org. |
| 92 |
|
| 93 |
License |
| 94 |
======= |
| 95 |
|
| 96 |
Copyright 2007 Gentoo Foundation, Inc; referenced text |
| 97 |
belongs to its owner(s). |
| 98 |
|
| 99 |
The contents of this document are licensed under the |
| 100 |
Creative Commons - Attribution / Share Alike license. |
| 101 |
|
| 102 |
http://creativecommons.org/licenses/by-sa/2.5 |
Archives