Ispravljena su dva sigurnosna propusta u radu programskog paketa HPLIP (Hewlett-Packard Linux Imaging and Printing system). Napadačima omogućuju izvođenje DoS (eng. Denial of Service) napada, pokretanje koda po vlastitom izboru i prepisivanje proizvoljnih datoteka.
Paket:
hplip 3.x
Operacijski sustavi:
Gentoo Linux
Kritičnost:
5
Problem:
pogreška u programskoj funkciji, preljev međuspremnika
Propusti su posljedica prepisivanja spremnika na stogu u funkciji "hpmud_get_pml()" te nesigurnog stvaranja privremenih datoteka u funkciji "send_data_to_stdout()".
Posljedica:
Napadači ih mogu iskoristiti za izvršavanje zlonamjernog programskog koda, izvođenje napada uskraćivanjem usluge i prepisivanje proizvoljnih datoteka.
Rješenje:
Korisnici se potiču na instalaciju odgovarajućih zakrpa.
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Gentoo Linux Security Advisory GLSA 201203-17
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http://security.gentoo.org/
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Severity: High
Title: HPLIP: Multiple vulnerabilities
Date: March 16, 2012
Bugs: #352085, #388655
ID: 201203-17
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Synopsis
========
Multiple vulnerabilities have been found in HPLIP, the worst of which
may allow execution of arbitrary code.
Background
==========
The Hewlett-Packard Linux Imaging and Printing system (HPLIP) provides
drivers for HP's inkjet and laser printers, scanners and fax machines.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-print/hplip < 3.11.10 >= 3.11.10
Description
===========
Two vulnerabilities have been found in HPLIP:
* The "hpmud_get_pml()" function in pml.c contains a boundary error
which could cause a stack-based buffer overflow (CVE-2010-4267).
* The "send_data_to_stdout()" function in hpcupsfax.cpp creates
insecure temporary files (CVE-2011-2722).
Impact
======
A remote attacker might send specially crafted SNMP reponses, possibly
resulting in execution of arbitrary code or a Denial of Service
condition. Furthermore, a local attacker could perform symlink attacks
to overwrite arbitrary files.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All HPLIP users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-print/hplip-3.11.10"
References
==========
[ 1 ] CVE-2010-4267
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-4267
[ 2 ] CVE-2011-2722
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-2722
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-201203-17.xml
Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
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https://bugs.gentoo.org.
License
=======
Copyright 2012 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.5
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