| 1 |
-----BEGIN PGP SIGNED MESSAGE----- |
| 2 |
Hash: SHA1 |
| 3 |
|
| 4 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 5 |
Gentoo Linux Security Advisory GLSA 200711-10 |
| 6 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 7 |
http://security.gentoo.org/ |
| 8 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 9 |
|
| 10 |
Severity: High |
| 11 |
Title: Mono: Buffer overflow |
| 12 |
Date: November 07, 2007 |
| 13 |
Bugs: #197067 |
| 14 |
ID: 200711-10 |
| 15 |
|
| 16 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 17 |
|
| 18 |
Synopsis |
| 19 |
======== |
| 20 |
|
| 21 |
Mono's BigInteger implementation contains a buffer overflow |
| 22 |
vulnerability that might lead to the execution of arbitrary code. |
| 23 |
|
| 24 |
Background |
| 25 |
========== |
| 26 |
|
| 27 |
Mono provides the necessary software to develop and run .NET client and |
| 28 |
server applications on various platforms. |
| 29 |
|
| 30 |
Affected packages |
| 31 |
================= |
| 32 |
|
| 33 |
------------------------------------------------------------------- |
| 34 |
Package / Vulnerable / Unaffected |
| 35 |
------------------------------------------------------------------- |
| 36 |
1 dev-lang/mono < 1.2.5.1-r1 >= 1.2.5.1-r1 |
| 37 |
|
| 38 |
Description |
| 39 |
=========== |
| 40 |
|
| 41 |
IOActive discovered an error in the Mono.Math.BigInteger class, in the |
| 42 |
reduction step of the Montgomery-based Pow methods, that could lead to |
| 43 |
a buffer overflow. |
| 44 |
|
| 45 |
Impact |
| 46 |
====== |
| 47 |
|
| 48 |
A remote attacker could exploit this vulnerability by sending specially |
| 49 |
crafted data to Mono applications using the BigInteger class, which |
| 50 |
might lead to the execution of arbitrary code with the privileges of |
| 51 |
the user running the application (possibly root) or a Denial of |
| 52 |
Service. |
| 53 |
|
| 54 |
Workaround |
| 55 |
========== |
| 56 |
|
| 57 |
There is no known workaround at this time. |
| 58 |
|
| 59 |
Resolution |
| 60 |
========== |
| 61 |
|
| 62 |
All Mono users should upgrade to the latest version: |
| 63 |
|
| 64 |
# emerge --sync |
| 65 |
# emerge --ask --oneshot --verbose ">=dev-lang/mono-1.2.5.1-r1" |
| 66 |
|
| 67 |
References |
| 68 |
========== |
| 69 |
|
| 70 |
[ 1 ] CVE-2007-5197 |
| 71 |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5197 |
| 72 |
|
| 73 |
Availability |
| 74 |
============ |
| 75 |
|
| 76 |
This GLSA and any updates to it are available for viewing at |
| 77 |
the Gentoo Security Website: |
| 78 |
|
| 79 |
http://security.gentoo.org/glsa/glsa-200711-10.xml |
| 80 |
|
| 81 |
Concerns? |
| 82 |
========= |
| 83 |
|
| 84 |
Security is a primary focus of Gentoo Linux and ensuring the |
| 85 |
confidentiality and security of our users machines is of utmost |
| 86 |
importance to us. Any security concerns should be addressed to |
| 87 |
security@g.o or alternatively, you may file a bug at |
| 88 |
http://bugs.gentoo.org. |
| 89 |
|
| 90 |
License |
| 91 |
======= |
| 92 |
|
| 93 |
Copyright 2007 Gentoo Foundation, Inc; referenced text |
| 94 |
belongs to its owner(s). |
| 95 |
|
| 96 |
The contents of this document are licensed under the |
| 97 |
Creative Commons - Attribution / Share Alike license. |
| 98 |
|
| 99 |
http://creativecommons.org/licenses/by-sa/2.5 |
| 100 |
-----BEGIN PGP SIGNATURE----- |
| 101 |
Version: GnuPG v1.4.7 (GNU/Linux) |
| 102 |
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org |
| 103 |
|
| 104 |
iD8DBQFHMkNzuhJ+ozIKI5gRArYjAJ9phAJywZIzP4gaojoMXPBM8GAFOwCgnT87 |
| 105 |
kIV5YdfDuYixkkHSy5ynoIk= |
| 106 |
=Nk3F |
| 107 |
-----END PGP SIGNATURE----- |
| 108 |
-- |
| 109 |
gentoo-announce@g.o mailing list |
Archives