U radu programskog paketa NetworkManager uočena je sigurnosna ranjivost koju zlonamjerni korisnik može iskoristiti za izvođenje MITM napada i otkrivanje zaporke.
| Paket: | NetworkManager 0.x |
| Operacijski sustavi: | openSUSE 11.4, openSUSE 12.1, SUSE Linux Enterprise Desktop 11, SUSE Linux Enterprise Server (SLES) 11 |
| Problem: | pogreška u programskoj komponenti |
| Iskorištavanje: | lokalno/udaljeno |
| Posljedica: | otkrivanje osjetljivih informacija |
| Rješenje: | programska zakrpa proizvođača |
| CVE: | CVE-2006-7246 |
| Izvorni ID preporuke: | SUSE-SA:2011:045 |
| Izvor: | SUSE |
| Problem: | |
| Ranjivost je uzrokovana nepravilnošću u korištenju 802.11X autentikacije. |
|
| Posljedica: | |
| Napadaču omogućuje izvođenje MITM (eng. man-in-the-middle) napada i otkrivanje zaporke. |
|
| Rješenje: | |
| Korisnicima se savjetuje instalacija odgovarajuće nadogradnje. |
|
Izvorni tekst preporuke
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
______________________________________________________________________________
SUSE Security Announcement
Package: NetworkManager, wpa_supplicant,
NetworkManager-gnome
Announcement ID: SUSE-SA:2011:045
Date: Tue, 22 Nov 2011 15:00:00 +0000
Affected Products: openSUSE 11.3
openSUSE 11.4
openSUSE 12.1
SUSE Linux Enterprise Desktop 11 SP1
SUSE Linux Enterprise Server 11 SP1
Vulnerability Type: man in the middle
CVSS v2 Base Score: 4.3 (AV:A/AC:M/Au:N/C:P/I:P/A:N)
SUSE Default Package: yes
Cross-References: CVE-2006-7246
Content of This Advisory:
1) Security Vulnerability Resolved:
NetworkManager man in the middle attack
Problem Description
2) Solution or Work-Around
3) Special Instructions and Notes
4) Package Location and Checksums
5) Pending Vulnerabilities, Solutions, and Work-Arounds:
- none
6) Authenticity Verification and Additional Information
______________________________________________________________________________
1) Problem Description and Brief Discussion
When 802.11X authentication is used (ie WPA Enterprise)
NetworkManager did not pin a certificate's subject to an ESSID. A
rogue access point could therefore be used to conduct MITM attacks
by using any other valid certificate issued by the same CA as used
in the original network (CVE-2006-7246). If password based
authentication is used (e.g. via PEAP or EAP-TTLS) this means an
attacker could sniff and potentially crack the password hashes of
the victims.
The certificate checks are only performed on newly created
connections. Users must therefore delete and re-create any existing
WPA Enterprise connections using e.g. nm-connection-editor to take
advantage of the checks.
knetworkmanager is also affected by but a fix is currently not
available. Users of knetworkmanager are advised to use nm-applet for
802.11X networks instead.
The following document gives a more detailed explanation about the
problem in general. Administrators are advised to take the
opportunity to review security of their wireless networks if 802.11X
authentication is used.
http://www.suse.de/~lnussel/The_Evil_Twin_problem_with_WPA2-Enterprise_v1.1.pdf
2) Solution or Work-Around
There is no known workaround, please install the update packages. As
precautionary measure you may turn off automatically connecting to
WPA Enterprise networks.
3) Special Instructions and Notes
Please reboot after the update and re-create any WPA Enterprise
connections from scratch.
4) Package Location and Checksums
The preferred method for installing security updates is to use the YaST
"Online Update" module or the "zypper" commandline tool. The package and
patch management stack will detect which updates are required and
automatically perform the necessary steps to verify and install them.
Alternatively, download the update packages for your distribution manually
and verify their integrity by the methods listed in Section 6 of this
announcement. Then install the packages using the command
rpm -Fhv <file.rpm>
to apply the update, replacing <file.rpm> with the filename of the
downloaded RPM package.
x86 Platform:
openSUSE 11.4:
http://download.opensuse.org/update/11.4/rpm/i586/NetworkManager-0.8.2-15.28.1.i586.rpm
http://download.opensuse.org/update/11.4/rpm/i586/NetworkManager-devel-0.8.2-15.28.1.i586.rpm
http://download.opensuse.org/update/11.4/rpm/i586/NetworkManager-doc-0.8.2-15.28.1.i586.rpm
http://download.opensuse.org/update/11.4/rpm/i586/NetworkManager-glib-0.8.2-15.28.1.i586.rpm
http://download.opensuse.org/update/11.4/rpm/i586/NetworkManager-gnome-0.8.2-9.12.1.i586.rpm
http://download.opensuse.org/update/11.4/rpm/i586/wpa_supplicant-0.7.3-3.4.1.i586.rpm
http://download.opensuse.org/update/11.4/rpm/i586/wpa_supplicant-gui-0.7.3-3.4.1.i586.rpm
openSUSE 11.3:
http://download.opensuse.org/update/11.3/rpm/i586/NetworkManager-0.8-8.13.1.i586.rpm
http://download.opensuse.org/update/11.3/rpm/i586/NetworkManager-devel-0.8-8.13.1.i586.rpm
http://download.opensuse.org/update/11.3/rpm/i586/NetworkManager-doc-0.8-8.13.1.i586.rpm
http://download.opensuse.org/update/11.3/rpm/i586/NetworkManager-glib-0.8-8.13.1.i586.rpm
http://download.opensuse.org/update/11.3/rpm/i586/NetworkManager-gnome-0.8-6.3.2.i586.rpm
http://download.opensuse.org/update/11.3/rpm/i586/wpa_supplicant-0.7.1-5.3.1.i586.rpm
http://download.opensuse.org/update/11.3/rpm/i586/wpa_supplicant-gui-0.7.1-5.3.1.i586.rpm
Platform Independent:
openSUSE 11.4:
http://download.opensuse.org/update/11.4/rpm/noarch/NetworkManager-gnome-lang-0.8.2-9.12.1.noarch.rpm
http://download.opensuse.org/update/11.4/rpm/noarch/NetworkManager-lang-0.8.2-15.28.1.noarch.rpm
x86-64 Platform:
openSUSE 11.4:
http://download.opensuse.org/update/11.4/rpm/x86_64/NetworkManager-0.8.2-15.28.1.x86_64.rpm
http://download.opensuse.org/update/11.4/rpm/x86_64/NetworkManager-devel-0.8.2-15.28.1.x86_64.rpm
http://download.opensuse.org/update/11.4/rpm/x86_64/NetworkManager-doc-0.8.2-15.28.1.x86_64.rpm
http://download.opensuse.org/update/11.4/rpm/x86_64/NetworkManager-glib-0.8.2-15.28.1.x86_64.rpm
http://download.opensuse.org/update/11.4/rpm/x86_64/NetworkManager-gnome-0.8.2-9.12.1.x86_64.rpm
http://download.opensuse.org/update/11.4/rpm/x86_64/wpa_supplicant-0.7.3-3.4.1.x86_64.rpm
http://download.opensuse.org/update/11.4/rpm/x86_64/wpa_supplicant-gui-0.7.3-3.4.1.x86_64.rpm
openSUSE 11.3:
http://download.opensuse.org/update/11.3/rpm/x86_64/NetworkManager-0.8-8.13.1.x86_64.rpm
http://download.opensuse.org/update/11.3/rpm/x86_64/NetworkManager-devel-0.8-8.13.1.x86_64.rpm
http://download.opensuse.org/update/11.3/rpm/x86_64/NetworkManager-doc-0.8-8.13.1.x86_64.rpm
http://download.opensuse.org/update/11.3/rpm/x86_64/NetworkManager-glib-0.8-8.13.1.x86_64.rpm
http://download.opensuse.org/update/11.3/rpm/x86_64/NetworkManager-gnome-0.8-6.3.2.x86_64.rpm
http://download.opensuse.org/update/11.3/rpm/x86_64/wpa_supplicant-0.7.1-5.3.1.x86_64.rpm
http://download.opensuse.org/update/11.3/rpm/x86_64/wpa_supplicant-gui-0.7.1-5.3.1.x86_64.rpm
Sources:
openSUSE 11.4:
http://download.opensuse.org/update/11.4/rpm/src/NetworkManager-0.8.2-15.28.1.src.rpm
http://download.opensuse.org/update/11.4/rpm/src/NetworkManager-gnome-0.8.2-9.12.1.src.rpm
http://download.opensuse.org/update/11.4/rpm/src/wpa_supplicant-0.7.3-3.4.1.src.rpm
openSUSE 11.3:
http://download.opensuse.org/update/11.3/rpm/src/NetworkManager-0.8-8.13.1.src.rpm
http://download.opensuse.org/update/11.3/rpm/src/NetworkManager-gnome-0.8-6.3.2.src.rpm
http://download.opensuse.org/update/11.3/rpm/src/wpa_supplicant-0.7.1-5.3.1.src.rpm
Our maintenance customers are notified individually. The packages are
offered for installation from the maintenance web:
SUSE Linux Enterprise Software Development Kit 11 SP1
http://download.novell.com/patch/finder/?keywords=470bd49885d23715755d7bb4f880b3c2
SUSE Linux Enterprise Desktop 11 SP1
http://download.novell.com/patch/finder/?keywords=470bd49885d23715755d7bb4f880b3c2
SUSE Linux Enterprise Server 11 SP1
http://download.novell.com/patch/finder/?keywords=470bd49885d23715755d7bb4f880b3c2
______________________________________________________________________________
5) Pending Vulnerabilities, Solutions, and Work-Arounds:
- none
______________________________________________________________________________
6) Authenticity Verification and Additional Information
- Announcement authenticity verification:
SUSE security announcements are published via mailing lists and on Web
sites. The authenticity and integrity of a SUSE security announcement is
guaranteed by a cryptographic signature in each announcement. All SUSE
security announcements are published with a valid signature.
To verify the signature of the announcement, save it as text into a file
and run the command
gpg --verify <file>
replacing <file> with the name of the file where you saved the
announcement. The output for a valid signature looks like:
gpg: Signature made <DATE> using RSA key ID 3D25D3D9
gpg: Good signature from "SuSE Security Team <Ova e-mail adresa je zaštićena od spambota. Potrebno je omogućiti JavaScript da je vidite.>"
where <DATE> is replaced by the date the document was signed.
If the security team's key is not contained in your key ring, you can
import it from the first installation CD. To import the key, use the
command
gpg --import gpg-pubkey-3d25d3d9-36e12d04.asc
- Package authenticity verification:
SUSE update packages are available on many mirror FTP servers all over the
world. While this service is considered valuable and important to the free
and open source software community, the authenticity and the integrity of
a package needs to be verified to ensure that it has not been tampered
with.
The internal rpm package signatures provide an easy way to verify the
authenticity of an RPM package. Use the command
rpm -v --checksig <file.rpm>
to verify the signature of the package, replacing <file.rpm> with the
filename of the RPM package downloaded. The package is unmodified if it
contains a valid signature from Ova e-mail adresa je zaštićena od spambota. Potrebno je omogućiti JavaScript da je vidite. with the key ID 9C800ACA.
This key is automatically imported into the RPM database (on
RPMv4-based distributions) and the gpg key ring of 'root' during
installation. You can also find it on the first installation CD and at
the end of this announcement.
- SUSE runs two security mailing lists to which any interested party may
subscribe:
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- General Linux and SUSE security discussion.
All SUSE security announcements are sent to this list.
To subscribe, send an e-mail to
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- SUSE's announce-only mailing list.
Only SUSE's security announcements are sent to this list.
To subscribe, send an e-mail to
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=====================================================================
SUSE's security contact is <Ova e-mail adresa je zaštićena od spambota. Potrebno je omogućiti JavaScript da je vidite.> or <Ova e-mail adresa je zaštićena od spambota. Potrebno je omogućiti JavaScript da je vidite.>.
The <Ova e-mail adresa je zaštićena od spambota. Potrebno je omogućiti JavaScript da je vidite.> public key is listed below.
=====================================================================
______________________________________________________________________________
The information in this advisory may be distributed or reproduced,
provided that the advisory is not modified in any way. In particular, the
clear text signature should show proof of the authenticity of the text.
SUSE Linux Products GmbH provides no warranties of any kind whatsoever
with respect to the information contained in this security advisory.
Type Bits/KeyID Date User ID
pub 2048R/3D25D3D9 1999-03-06 SuSE Security Team <Ova e-mail adresa je zaštićena od spambota. Potrebno je omogućiti JavaScript da je vidite.>
pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <Ova e-mail adresa je zaštićena od spambota. Potrebno je omogućiti JavaScript da je vidite.>
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