Izdana je nadogradnja koja otklanja ranjivost otkrivenu kod alata Logsurfer u radu na operacijskom sustavu Gentoo. Riječ je o alatu za nadgledanje i analizu događaja u stvarnom vremenu. Utvrđeno je da funkcija prepare_exec() unutar datoteke src/exec.c sadrži ranjivost dvostrukog oslobađanja memorije. Udaljeni napadač može ubaciti posebno oblikovan niz znakova u log datoteku, što će rezultirati izvršavanjem proizvoljnog programskog koda s dozvolama Logsurfer korisnika. Korisnicima se savjetuje nadogradnja na posljednju inačicu.

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Gentoo Linux Security Advisory GLSA 201201-04
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http://security.gentoo.org/
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Severity: Normal
Title: Logsurfer: Arbitrary code execution
Date: January 20, 2012
Bugs: #387397
ID: 201201-04

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Synopsis
========

A double-free flaw in Logsurfer allows a remote attacker to execute
arbitrary code.

Background
==========

Logsurfer is a real time log monitoring and analysis tool.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-admin/logsurfer+ < 1.8 >= 1.8

Description
===========

Logsurfer log files may contain substrings used for executing external
commands. The prepare_exec() function in src/exec.c contains a
double-free vulnerability.

Impact
======

A remote attacker could inject specially-crafted strings into a log
file processed by Logsurfer, resulting in the execution of arbitrary
code with the permissions of the Logsurfer user.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Logsurfer users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose
">=app-admin/logsurfer+-1.8"

References
==========

[ 1 ] CVE-2011-3626
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2011-3626

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-201201-04.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 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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