U radu programskog paketa radvd uočeno je više sigurnosnih ranjivosti. Udaljeni ih napadač može iskoristiti za napad uskraćivanjem usluga (DoS), izmjenu podataka te dobivanje većih privilegija.
Paket:
radvd 1.x
Operacijski sustavi:
Gentoo Linux
Kritičnost:
3.8
Problem:
pogreška u programskoj funkciji, preljev međuspremnika
Iskorištavanje:
udaljeno
Posljedica:
dobivanje većih privilegija, izmjena podataka, uskraćivanje usluga (DoS)
Sigurnosni propusti su posljedica preljeva međuspremnika u funkciji "process_ra()", pogrešaka u funkcijama "set_interface_var()" i "process_rs()", itd.
Posljedica:
Udaljeni zloćudni korisnik navedene ranjivosti može iskoristiti za izmjenu podataka, dpovećanje ovlasti te DoS (eng. Denial of Service) napad.
Rješenje:
Svim se korisnicima programskog paketa radvd savjetuje njegova nadogradnja na novije inačice.
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Gentoo Linux Security Advisory GLSA 201111-08
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http://security.gentoo.org/
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Severity: High
Title: radvd: Multiple vulnerabilities
Date: November 20, 2011
Bugs: #385967
ID: 201111-08
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Synopsis
========
Multiple vulnerabilities have been found in radvd which could
potentially lead to privilege escalation, data loss, or a Denial of
Service.
Background
==========
radvd is an IPv6 router advertisement daemon for Linux and BSD.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-misc/radvd < 1.8.2 >= 1.8.2
Description
===========
Multiple vulnerabilities have been discovered in radvd. Please review
the CVE identifiers referenced below for details.
Impact
======
A remote unauthenticated attacker may be able to gain escalated
privileges, escalate the privileges of the radvd process, overwrite
files with specific names, or cause a Denial of Service. Local
attackers may be able to overwrite the contents of arbitrary files
using symlinks.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All radvd users should upgrade to the latest stable version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/radvd-1.8.2"
References
==========
[ 1 ] CVE-2011-3601
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-3601
[ 2 ] CVE-2011-3602
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-3602
[ 3 ] CVE-2011-3603
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-3603
[ 4 ] CVE-2011-3604
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-3604
[ 5 ] CVE-2011-3605
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-3605
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-201111-08.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
Ova e-mail adresa je zaštićena od spambota. Potrebno je omogućiti JavaScript da je vidite. or alternatively, you may file a bug at
https://bugs.gentoo.org.
License
=======
Copyright 2011 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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