Pronađeno je rješenje za sigurnosni propust paketa libotr. Udaljeni napadač mogao je iskoristiti ovaj propust kako bi nasilno ugasio aplikaciju i time doveo do uskraćivanja usluge.
Paket:
libotr 3.x
Operacijski sustavi:
Mandriva Linux 2011
Kritičnost:
6.4
Problem:
pogreška u programskoj komponenti
Iskorištavanje:
udaljeno
Posljedica:
uskraćivanje usluga (DoS)
Rješenje:
programska zakrpa proizvođača
CVE:
CVE-2012-3461
Izvorni ID preporuke:
MDVSA-2012:131
Izvor:
Mandriva
Problem:
Nepravilnost je uzrokovana preljevom spremnika na gomili prilikom base64 dekodiranja.
Posljedica:
Udaljeni napadač mogao je poslati posebnu OTR poruku koja bi se krivo dekodirala i dovela do gašenja aplikacije. Također je moguće i proizvoljno izvršavanje programskog koda.
Rješenje:
Za rješavanje problema savjetuje se nadogradnja sustava izdanim osvježenim paketima.
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_______________________________________________________________________
Mandriva Linux Security Advisory MDVSA-2012:131
http://www.mandriva.com/security/
_______________________________________________________________________
Package : libotr
Date : August 13, 2012
Affected: 2011.
_______________________________________________________________________
Problem Description:
A vulnerability was found and corrected in libotr:
Just Ferguson discovered that libotr, an off-the-record (OTR) messaging
library, can be forced to perform zero-length allocations for heap
buffers that are used in base64 decoding routines. An attacker can
exploit this flaw by sending crafted messages to an application that
is using libotr to perform denial of service attacks or potentially
execute arbitrary code (CVE-2012-3461).
The updated packages have been patched to correct this issue.
_______________________________________________________________________
References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-3461
_______________________________________________________________________
Updated Packages:
Mandriva Linux 2011:
7248af52fb3ea459d0c7e65907631bda
2011/i586/libotr2-3.2.0-5.1-mdv2011.0.i586.rpm
9e3d6867954096a67cdd69df3c688b91
2011/i586/libotr-devel-3.2.0-5.1-mdv2011.0.i586.rpm
d0fdea9fc83385a6540881a99b70e06f
2011/i586/libotr-utils-3.2.0-5.1-mdv2011.0.i586.rpm
c2cca963b8a3ed1c48a9913251088a57 2011/SRPMS/libotr-3.2.0-5.1.src.rpm
Mandriva Linux 2011/X86_64:
4ba040455e37c5ff708f1b653a50a980
2011/x86_64/lib64otr2-3.2.0-5.1-mdv2011.0.x86_64.rpm
34d39b44c8a2774cb4d17685ad128697
2011/x86_64/lib64otr-devel-3.2.0-5.1-mdv2011.0.x86_64.rpm
c394a5107bc015193c97a3d9cc092f4e
2011/x86_64/libotr-utils-3.2.0-5.1-mdv2011.0.x86_64.rpm
c2cca963b8a3ed1c48a9913251088a57 2011/SRPMS/libotr-3.2.0-5.1.src.rpm
_______________________________________________________________________
To upgrade automatically use MandrivaUpdate or urpmi. The verification
of md5 checksums and GPG signatures is performed automatically for you.
All packages are signed by Mandriva for security. You can obtain the
GPG public key of the Mandriva Security Team by executing:
gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98
You can view other update advisories for Mandriva Linux at:
http://www.mandriva.com/security/advisories
If you want to report vulnerabilities, please contact
security_(at)_mandriva.com
_______________________________________________________________________
Type Bits/KeyID Date User ID
pub 1024D/22458A98 2000-07-10 Mandriva Security Team
<security*mandriva.com>
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