U radu programskog paketa logrotate uočeno je i ispravljeno više sigurnosnih propusta. Zloćudni ih je korisnik mogao iskoristiti za pregled osjetljivih informacija, proizvoljno pokretanje programskog koda, napad uskraćivanjem usluga (DoS) te dobivanje većih privilegija u sustavu.
Paket:
logrotate 3.x
Operacijski sustavi:
Gentoo Linux
Kritičnost:
6.9
Problem:
pogreška u programskoj funkciji, postojanje root korisničkog računa za koji nije potrebna zaporka
Sigurnosni propusti su posljedica pogrešne implementacije funkcija "createOutputFile", "shred_file" i "writeState" te korištenje root privilegija u osnovnom načinu rada.
Posljedica:
Zloćudni korisnik navedene propuste može iskoristiti za otkrivanje osjetljivih informacija, proizvoljno pokretanje programskog koda, povećanje ovlasti te DoS (eng. Denial of Service) napad.
Rješenje:
Svim se korisnicima navedenog programskog paketa savjetuje njegova nadogradnja na novije inačice.
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Gentoo Linux Security Advisory GLSA 201206-36
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http://security.gentoo.org/
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Severity: High
Title: logrotate: Multiple vulnerabilities
Date: June 25, 2012
Bugs: #356811, #372973
ID: 201206-36
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Synopsis
========
Multiple vulnerabilities were found in logrotate, which could lead to
arbitrary system command execution.
Background
==========
logrotate rotates, compresses, and mails system logs.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-admin/logrotate < 3.8.0 >= 3.8.0
Description
===========
Multiple vulnerabilities have been discovered in logrotate. Please
review the CVE identifiers referenced below for details.
Impact
======
A local attacker could use this flaw to truncate arbitrary system file,
to change file owner or mode on arbitrary system files, to conduct
symlink attacks and send arbitrary system files, to execute arbitrary
system commands, to cause abort in subsequent logrotate runs, to
disclose sensitive information, to execute arbitrary code or cause a
Denial of Service condition.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All logrotate users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-admin/logrotate-3.8.0"
References
==========
[ 1 ] CVE-2011-1098
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-1098
[ 2 ] CVE-2011-1154
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-1154
[ 3 ] CVE-2011-1155
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-1155
[ 4 ] CVE-2011-1549
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-1549
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-201206-36.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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