U radu programskog paketa vino, distribuiranog s Mandriva Linux operacijskim sustavom, uočene su sigurnosne ranjivosti koje udaljenom napadaču omogućuju napad uskraćivanjem usluge (DoS).
Paket:
vino 2.x
Operacijski sustavi:
Mandriva Linux 2010.1
Kritičnost:
4.7/10
Problem:
pogreška u programskoj funkciji, preljev međuspremnika
Iskorištavanje:
udaljeno
Posljedica:
uskraćivanje usluga (DoS)
Rješenje:
programska zakrpa proizvođača
CVE:
CVE-2011-0904, CVE-2011-0905
Izvorni ID preporuke:
MDVSA-2011:087
Izvor:
Mandriva
Problem:
Sigurnosne ranjivosti se javljaju zbog preljeva međuspremnika u funkciji "rfbSendFramebufferUpdate" kod datoteke "server/libvncserver/rfbserver.c".
Posljedica:
Udaljenom napadaču nedostaci omogućuju izvođenje napada uskraćivanjem usluge (eng. Denial of Service).
Rješenje:
Svim se korisnicima savjetuje nadogradnja na novije inačice.
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_______________________________________________________________________
Mandriva Linux Security Advisory MDVSA-2011:087
http://www.mandriva.com/security/
_______________________________________________________________________
Package : vino
Date : May 16, 2011
Affected: 2010.1
_______________________________________________________________________
Problem Description:
Multile vulnerabilities has been found and corrected in vino:
The rfbSendFramebufferUpdate function in
server/libvncserver/rfbserver.c in vino-server in Vino 2.x before
2.28.3, 2.32.x before 2.32.2, 3.0.x before 3.0.2, and 3.1.x before
3.1.1, when raw encoding is used, allows remote authenticated users to
cause a denial of service (daemon crash) via a large (1) X position or
(2) Y position value in a framebuffer update request that triggers
an out-of-bounds memory access, related to the rfbTranslateNone and
rfbSendRectEncodingRaw functions (CVE-2011-0904).
The rfbSendFramebufferUpdate function in
server/libvncserver/rfbserver.c in vino-server in Vino 2.x before
2.28.3, 2.32.x before 2.32.2, 3.0.x before 3.0.2, and 3.1.x before
3.1.1, when tight encoding is used, allows remote authenticated users
to cause a denial of service (daemon crash) via crafted dimensions
in a framebuffer update request that triggers an out-of-bounds read
operation (CVE-2011-0905).
The updated packages have been upgraded to 2.28.3 which is not
vulnerable to these isssues.
_______________________________________________________________________
References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-0904
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-0905
_______________________________________________________________________
Updated Packages:
Mandriva Linux 2010.1:
3f8d792003d96c24874adf6c40a15bb3
2010.1/i586/vino-2.28.3-1.1mdv2010.2.i586.rpm
a5347580a783a953aa65f04510969c33
2010.1/SRPMS/vino-2.28.3-1.1mdv2010.2.src.rpm
Mandriva Linux 2010.1/X86_64:
3cdd6a45c253350b1422a311acb5d4c4
2010.1/x86_64/vino-2.28.3-1.1mdv2010.2.x86_64.rpm
a5347580a783a953aa65f04510969c33
2010.1/SRPMS/vino-2.28.3-1.1mdv2010.2.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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