U radu programskog paketa puppet otkriveni su i ispravljeni nedostaci koje udaljeni napadač može iskoristiti za otkrivanje osjetljivih informacija, izvođenje DoS napada, nedozvoljeno čitanje/brisanje proizvoljnih datoteka i izvođenje MITM napada.
Paket:
puppet 2.x
Operacijski sustavi:
Ubuntu Linux 10.04, Ubuntu Linux 11.04, Ubuntu Linux 11.10, Ubuntu Linux 12.04
Kritičnost:
7.8
Problem:
neodgovarajuća provjera ulaznih podataka, pogreška u programskoj komponenti
Propusti su posljedica pogrešnog rukovanja određenim HTTP GET te "Delete" zahtjevima, neodgovarajuće podešenih ovlasti datoteke "last_run_report.yaml" te nepravilnog rukovanja imenima certifikata.
Posljedica:
Propuste je moguće iskoristiti za čitanje/brisanje proizvoljnih datoteka, izvođenje napada "čovjek-u-sredini" (MITM) te otkrivanje osjetljivih informacija.
Rješenje:
Svim korisnicima se savjetuje korištenje nadogradnje koja otklanja opisane propuste.
==========================================================================
Ubuntu Security Notice USN-1506-1
July 12, 2012
puppet vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.04 LTS
Summary:
Several security issues were fixed in Puppet.
Software Description:
- puppet: Centralized configuration management
Details:
It was discovered that Puppet incorrectly handled certain HTTP GET
requests. An attacker could use this flaw with a valid client certificate
to retrieve arbitrary files from the Puppet master. (CVE-2012-3864)
It was discovered that Puppet incorrectly handled Delete requests. If a
Puppet master were reconfigured to allow the "Delete" method, an attacker
on an authenticated host could use this flaw to delete arbitrary files from
the Puppet server, leading to a denial of service. (CVE-2012-3865)
It was discovered that Puppet incorrectly set file permissions on the
last_run_report.yaml file. An attacker could use this flaw to access
sensitive information. This issue only affected Ubuntu 11.10 and Ubuntu
12.04 LTS. (CVE-2012-3866)
It was discovered that Puppet incorrectly handled agent certificate names.
An attacker could use this flaw to create a specially crafted certificate
and trick an administrator into signing a certificate that can then be used
to man-in-the-middle agent nodes. (CVE-2012-3867)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 LTS:
puppet-common 2.7.11-1ubuntu2.1
Ubuntu 11.10:
puppet-common 2.7.1-1ubuntu3.7
Ubuntu 11.04:
puppet-common 2.6.4-2ubuntu2.10
Ubuntu 10.04 LTS:
puppet-common 0.25.4-2ubuntu6.8
In general, a standard system update will make all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-1506-1
CVE-2012-3864, CVE-2012-3865, CVE-2012-3866, CVE-2012-3867
Package Information:
https://launchpad.net/ubuntu/+source/puppet/2.7.11-1ubuntu2.1
https://launchpad.net/ubuntu/+source/puppet/2.7.1-1ubuntu3.7
https://launchpad.net/ubuntu/+source/puppet/2.6.4-2ubuntu2.10
https://launchpad.net/ubuntu/+source/puppet/0.25.4-2ubuntu6.8
Posljednje sigurnosne preporuke