Izdana je revizija upozorenja USN-1367-1 vezana uz programske pakete Thunderbird i libpng, prvotno izdanog 16. veljače 2012. godine. U izvornom upozorenju opisani su nedostaci koje napadači mogu iskoristiti za proizvoljno pokretanje programskog koda i napad uskraćivanjem usluga (eng. Denial of Service).
Paket:
thunderbird 3.x
Operacijski sustavi:
Ubuntu Linux 10.04, Ubuntu Linux 10.10, Ubuntu Linux 11.04
dobivanje većih privilegija, proizvoljno izvršavanje programskog koda, uskraćivanje usluga (DoS)
Rješenje:
programska zakrpa proizvođača
CVE:
CVE-2011-3026
Izvorni ID preporuke:
USN-1367-3
Izvor:
Ubuntu
Problem:
Otkriveno je da dolazi do cjelobrojnog prepisivanja u radu programske biblioteke libpng. Revizija upozorenja je izdana zbog odgovarajuće zakrpe u programskom paketu Thunderbird koji koristi programsku biblioteku libpng.
Posljedica:
Navedene ranjivosti zlonamjeran napadač može iskoristiti za izvršavanje proizvoljnog programskog koda i za DoS (eng. Denial of Service) napad.
==========================================================================
Ubuntu Security Notice USN-1367-3
February 17, 2012
thunderbird vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 11.04
- Ubuntu 10.10
- Ubuntu 10.04 LTS
Summary:
Thunderbird could be made to crash or run programs as your login if it
opened a specially crafted file.
Software Description:
- thunderbird: Mozilla Open Source mail and newsgroup client
Details:
USN-1367-1 fixed vulnerabilities in libpng. This provides the corresponding
update for Thunderbird.
Original advisory details:
Jueri Aedla discovered that libpng did not properly verify the size used
when allocating memory during chunk decompression. If a user or automated
system using libpng were tricked into opening a specially crafted image,
an attacker could exploit this to cause a denial of service or execute
code with the privileges of the user invoking the program. (CVE-2011-3026)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 11.04:
thunderbird 3.1.19+build1+nobinonly-0ubuntu0.11.04.1
Ubuntu 10.10:
thunderbird 3.1.19+build1+nobinonly-0ubuntu0.10.10.1
Ubuntu 10.04 LTS:
thunderbird 3.1.19+build1+nobinonly-0ubuntu0.10.04.1
After a standard system update you need to restart Thunderbird to make all
the necessary changes.
References:
http://www.ubuntu.com/usn/usn-1367-3
http://www.ubuntu.com/usn/usn-1367-1
CVE-2011-3026, https://launchpad.net/bugs/933399
Package Information:
https://launchpad.net/ubuntu/+source/thunderbird/3.1.19+build1+nobinonly-0ubuntu0.11.04.1
https://launchpad.net/ubuntu/+source/thunderbird/3.1.19+build1+nobinonly-0ubuntu0.10.10.1
https://launchpad.net/ubuntu/+source/thunderbird/3.1.19+build1+nobinonly-0ubuntu0.10.04.1
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