Objavljena je revizija preporuke vezane za ClamAV, prvotno objavljene 19. lipnja 2012 pod oznakom USN-1482-1, a u preporuci je bilo riječ o ranjivostima koje onemogućuju detekciju zlonamjernih programa.
Paket:
ClamAV 0.x
Operacijski sustavi:
Ubuntu Linux 11.04, Ubuntu Linux 11.10, Ubuntu Linux 12.04
Kritičnost:
4.3
Problem:
neodgovarajuće rukovanje datotekama, pogreška u programskoj komponenti
Iskorištavanje:
udaljeno
Posljedica:
neovlašteni pristup sustavu, zaobilaženje postavljenih ograničenja
Rješenje:
programska zakrpa proizvođača
CVE:
CVE-2012-1457, CVE-2012-1459, CVE-2012-1458
Izvorni ID preporuke:
USN-1482-2
Izvor:
Ubuntu
Problem:
Problem se javlja pri obradi posebno oblikovanih TAR te CHM datoteka. Revizija je objavljena zbog neispravne instalacijske datoteke za nadogradnju.
Posljedica:
Napadač bi neopaženo mogao podmetnuti zlonamjerni program, te posljedično domoći se osjetljivih informacija ili naštetiti sustavu.
==========================================================================
Ubuntu Security Notice USN-1482-2
June 20, 2012
clamav regression
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 11.04
Summary:
ClamAV could improperly detect malware if it opened a specially crafted file.
Software Description:
- clamav: Anti-virus utility for Unix
Details:
USN-1482-1 fixed vulnerabilities in ClamAV. The updated packages could fail
to install in certain situations. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
It was discovered that ClamAV incorrectly handled certain malformed TAR
archives. A remote attacker could create a specially-crafted TAR file
containing malware that could escape being detected. (CVE-2012-1457,
CVE-2012-1459)
It was discovered that ClamAV incorrectly handled certain malformed CHM
files. A remote attacker could create a specially-crafted CHM file
containing malware that could escape being detected. (CVE-2012-1458)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 LTS:
clamav 0.97.5+dfsg-1ubuntu0.12.04.2
clamav-daemon 0.97.5+dfsg-1ubuntu0.12.04.2
libclamav6 0.97.5+dfsg-1ubuntu0.12.04.2
Ubuntu 11.10:
clamav 0.97.5+dfsg-1ubuntu0.11.10.2
clamav-daemon 0.97.5+dfsg-1ubuntu0.11.10.2
libclamav6 0.97.5+dfsg-1ubuntu0.11.10.2
Ubuntu 11.04:
clamav 0.97.5+dfsg-1ubuntu0.11.04.2
clamav-daemon 0.97.5+dfsg-1ubuntu0.11.04.2
libclamav6 0.97.5+dfsg-1ubuntu0.11.04.2
In general, a standard system update will make all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-1482-2
http://www.ubuntu.com/usn/usn-1482-1
https://launchpad.net/bugs/1015337
Package Information:
https://launchpad.net/ubuntu/+source/clamav/0.97.5+dfsg-1ubuntu0.12.04.2
https://launchpad.net/ubuntu/+source/clamav/0.97.5+dfsg-1ubuntu0.11.10.2
https://launchpad.net/ubuntu/+source/clamav/0.97.5+dfsg-1ubuntu0.11.04.2
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