| 1 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 2 |
Gentoo Linux Security Advisory GLSA 200408-17 |
| 3 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 4 |
http://security.gentoo.org/ |
| 5 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 6 |
|
| 7 |
Severity: Normal |
| 8 |
Title: rsync: Potential information leakage |
| 9 |
Date: August 17, 2004 |
| 10 |
Bugs: #60309 |
| 11 |
ID: 200408-17 |
| 12 |
|
| 13 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 14 |
|
| 15 |
Synopsis |
| 16 |
======== |
| 17 |
|
| 18 |
rsync fails to properly sanitize paths. This vulnerability could allow |
| 19 |
the listing of arbitrary files and allow file overwriting outside |
| 20 |
module's path on rsync server configurations that allow uploading. |
| 21 |
|
| 22 |
Background |
| 23 |
========== |
| 24 |
|
| 25 |
rsync is a utility that provides fast incremental file transfers. It is |
| 26 |
used to efficiently synchronize files between hosts and is used by |
| 27 |
emerge to fetch Gentoo's Portage tree. rsyncd is the rsync daemon, |
| 28 |
which listens to connections from rsync clients. |
| 29 |
|
| 30 |
Affected packages |
| 31 |
================= |
| 32 |
|
| 33 |
------------------------------------------------------------------- |
| 34 |
Package / Vulnerable / Unaffected |
| 35 |
------------------------------------------------------------------- |
| 36 |
1 net-misc/rsync <= 2.6.0-r2 >= 2.6.0-r3 |
| 37 |
|
| 38 |
Description |
| 39 |
=========== |
| 40 |
|
| 41 |
The paths sent by the rsync client are not checked thoroughly enough. |
| 42 |
It does not affect the normal send/receive filenames that specify what |
| 43 |
files should be transferred. It does affect certain option paths that |
| 44 |
cause auxilliary files to be read or written. |
| 45 |
|
| 46 |
Impact |
| 47 |
====== |
| 48 |
|
| 49 |
When rsyncd is used without chroot ("use chroot = false" in the |
| 50 |
rsyncd.conf file), this vulnerability could allow the listing of |
| 51 |
arbitrary files outside module's path and allow file overwriting |
| 52 |
outside module's path on rsync server configurations that allows |
| 53 |
uploading. Both possibilities are exposed only when chroot option is |
| 54 |
disabled. |
| 55 |
|
| 56 |
Workaround |
| 57 |
========== |
| 58 |
|
| 59 |
You should never set the rsync daemon to run with "use chroot = false". |
| 60 |
|
| 61 |
Resolution |
| 62 |
========== |
| 63 |
|
| 64 |
All users should update to the latest version of the rsync package. |
| 65 |
|
| 66 |
# emerge sync |
| 67 |
|
| 68 |
# emerge -pv ">=net-misc/rsync-2.6.0-r3" |
| 69 |
# emerge ">=net-misc/rsync-2.6.0-r3" |
| 70 |
|
| 71 |
References |
| 72 |
========== |
| 73 |
|
| 74 |
[ 1 ] rsync Advisory |
| 75 |
http://samba.org/rsync/#security_aug04 |
| 76 |
[ 2 ] rsync 2.6.2 announcement |
| 77 |
http://lists.samba.org/archive/rsync-announce/2004/000017.html |
| 78 |
|
| 79 |
Availability |
| 80 |
============ |
| 81 |
|
| 82 |
This GLSA and any updates to it are available for viewing at |
| 83 |
the Gentoo Security Website: |
| 84 |
|
| 85 |
http://security.gentoo.org/glsa/glsa-200408-17.xml |
| 86 |
|
| 87 |
Concerns? |
| 88 |
========= |
| 89 |
|
| 90 |
Security is a primary focus of Gentoo Linux and ensuring the |
| 91 |
confidentiality and security of our users machines is of utmost |
| 92 |
importance to us. Any security concerns should be addressed to |
| 93 |
security@g.o or alternatively, you may file a bug at |
| 94 |
http://bugs.gentoo.org. |
| 95 |
|
| 96 |
License |
| 97 |
======= |
| 98 |
|
| 99 |
Copyright 2004 Gentoo Foundation, Inc; referenced text |
| 100 |
belongs to its owner(s). |
| 101 |
|
| 102 |
The contents of this document are licensed under the |
| 103 |
Creative Commons - Attribution / Share Alike license. |
| 104 |
|
| 105 |
http://creativecommons.org/licenses/by-sa/1.0 |
Archives