U radu programskog paketa t1lib uočeno je više sigurnosnih propusta. Udaljeni ih napadač može iskoristiti za DoS (eng. Denial of Service) napad i proizvoljno pokretanje programskog koda.
Paket:
t1lib 5.x
Operacijski sustavi:
Mandriva Linux 2010.1, Mandriva Linux 2011, Mandriva Linux Enterprise Server 5.0
Sigurnosni propusti su posljedica neodgovarajućeg rukovanja memorijom, preljeva međuspremnika u komponenti "dvi-backend", cjelobrojnog prepisivanja prilikom korištenja "Type 1" fonta, itd.
Posljedica:
Udaljeni napadač navedene propuste može iskoristiti za proizvoljno izvršavanje programskog koda te napad uskraćivanjem usluga (DoS).
Rješenje:
Svim se korisnicima navedenog programskog paketa, u svrhu zaštite sigurnosti, savjetuje njegova nadogradnja na novije inačice.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
_______________________________________________________________________
Mandriva Linux Security Advisory MDVSA-2012:004
http://www.mandriva.com/security/
_______________________________________________________________________
Package : t1lib
Date : January 12, 2012
Affected: 2010.1, 2011., Enterprise Server 5.0
_______________________________________________________________________
Problem Description:
Multiple vulnerabilities has been found and corrected in t1lib:
A heap-based buffer overflow flaw was found in the way AFM font file
parser, used for rendering of DVI files, in GNOME evince document
viewer and other products, processed line tokens from the given input
stream. A remote attacker could provide a DVI file, with embedded
specially-crafted font file, and trick the local user to open it with
an application using the AFM font parser, leading to that particular
application crash or, potentially, arbitrary code execution with the
privileges of the user running the application. Different vulnerability
than CVE-2010-2642 (CVE-2011-0433).
t1lib 5.1.2 and earlier reads from invalid memory locations, which
allows remote attackers to cause a denial of service (application
crash) via a crafted Type 1 font in a PDF document, a different
vulnerability than CVE-2011-0764 (CVE-2011-1552).
Use-after-free vulnerability in t1lib 5.1.2 and earlier allows
remote attackers to cause a denial of service (application crash)
via a PDF document containing a crafted Type 1 font that triggers an
invalid memory write, a different vulnerability than CVE-2011-0764
(CVE-2011-1553).
Off-by-one error in t1lib 5.1.2 and earlier allows remote attackers
to cause a denial of service (application crash) via a PDF document
containing a crafted Type 1 font that triggers an invalid memory
read, integer overflow, and invalid pointer dereference, a different
vulnerability than CVE-2011-0764 (CVE-2011-1554).
The updated packages have been patched to correct these issues.
_______________________________________________________________________
References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-0433
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1552
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1553
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1554
https://bugzilla.redhat.com/show_bug.cgi?id=679732
http://www.toucan-system.com/advisories/tssa-2011-01.txt
_______________________________________________________________________
Updated Packages:
Mandriva Linux 2010.1:
906e9b289b52af0b8cd8876cea5a662a
2010.1/i586/libt1lib5-5.1.2-8.3mdv2010.2.i586.rpm
7e2588f8d40dde88a76762c655561cd4
2010.1/i586/libt1lib-devel-5.1.2-8.3mdv2010.2.i586.rpm
3f52b411430b7c121f3f5c3e6208fa35
2010.1/i586/libt1lib-static-devel-5.1.2-8.3mdv2010.2.i586.rpm
0819703d1a566dbb89ef2a20aac7eab3
2010.1/i586/t1lib-config-5.1.2-8.3mdv2010.2.i586.rpm
0a27570fe99a3c8b0060658e80fa31a9
2010.1/i586/t1lib-progs-5.1.2-8.3mdv2010.2.i586.rpm
1330f9cde66d30a4e0b6adfea3ed627c
2010.1/SRPMS/t1lib-5.1.2-8.3mdv2010.2.src.rpm
Mandriva Linux 2010.1/X86_64:
4a750fd24b6023d30a40b86146c7c3cf
2010.1/x86_64/lib64t1lib5-5.1.2-8.3mdv2010.2.x86_64.rpm
33d849053852d299235845f5d6f89d31
2010.1/x86_64/lib64t1lib-devel-5.1.2-8.3mdv2010.2.x86_64.rpm
49c35baf2d21c037d3c418970d76f7fc
2010.1/x86_64/lib64t1lib-static-devel-5.1.2-8.3mdv2010.2.x86_64.rpm
289fd06ba3966e353e0ddee95f9d482f
2010.1/x86_64/t1lib-config-5.1.2-8.3mdv2010.2.x86_64.rpm
df7434fc99f8ddabe69dfb094e37f807
2010.1/x86_64/t1lib-progs-5.1.2-8.3mdv2010.2.x86_64.rpm
1330f9cde66d30a4e0b6adfea3ed627c
2010.1/SRPMS/t1lib-5.1.2-8.3mdv2010.2.src.rpm
Mandriva Linux 2011:
4f34e6057ce31346d38e9fc9001d61c2
2011/i586/libt1lib5-5.1.2-11.2-mdv2011.0.i586.rpm
77aa1a06d09601db56f3fc05bf9faa7e
2011/i586/libt1lib-devel-5.1.2-11.2-mdv2011.0.i586.rpm
222228ade6add3fd7125ed8bb36d27da
2011/i586/libt1lib-static-devel-5.1.2-11.2-mdv2011.0.i586.rpm
9b7b97c247969ee2d19168b8292e2421
2011/i586/t1lib-config-5.1.2-11.2-mdv2011.0.i586.rpm
ed73e55ca60889ce0b2be65d963c08ce
2011/i586/t1lib-progs-5.1.2-11.2-mdv2011.0.i586.rpm
94fd5bc64f8e01f1687b5c58c99c5b35 2011/SRPMS/t1lib-5.1.2-11.2.src.rpm
Mandriva Linux 2011/X86_64:
d670c2d035cabd66078503e9fb975919
2011/x86_64/lib64t1lib5-5.1.2-11.2-mdv2011.0.x86_64.rpm
173579a5a2e2be525e6f0f18216a15d8
2011/x86_64/lib64t1lib-devel-5.1.2-11.2-mdv2011.0.x86_64.rpm
7c591e3e11d340923fbb3c5285fc9365
2011/x86_64/lib64t1lib-static-devel-5.1.2-11.2-mdv2011.0.x86_64.rpm
b3d85f999794d5ced9dda7e1ebd44bd0
2011/x86_64/t1lib-config-5.1.2-11.2-mdv2011.0.x86_64.rpm
430daefeed13b85e4df03de1e2ba6b73
2011/x86_64/t1lib-progs-5.1.2-11.2-mdv2011.0.x86_64.rpm
94fd5bc64f8e01f1687b5c58c99c5b35 2011/SRPMS/t1lib-5.1.2-11.2.src.rpm
Mandriva Enterprise Server 5:
617329fd6d27f015da5063d4122d7414
mes5/i586/libt1lib5-5.1.2-4.3mdvmes5.2.i586.rpm
cd261ce6f85f3830c90145637e8189b3
mes5/i586/libt1lib-devel-5.1.2-4.3mdvmes5.2.i586.rpm
d544329a165b971a0aea3fce24dd2084
mes5/i586/libt1lib-static-devel-5.1.2-4.3mdvmes5.2.i586.rpm
3f287590d1eeeec0758fc9b41b814b80
mes5/i586/t1lib-config-5.1.2-4.3mdvmes5.2.i586.rpm
ae2a57893d1daa1b21c798181d87e8c0
mes5/i586/t1lib-progs-5.1.2-4.3mdvmes5.2.i586.rpm
00d9c9fe6fdea354b2ae5829ad69186d mes5/SRPMS/t1lib-5.1.2-4.3mdvmes5.2.src.rpm
Mandriva Enterprise Server 5/X86_64:
a5834c68430fa0983aa5f86eb30d548d
mes5/x86_64/lib64t1lib5-5.1.2-4.3mdvmes5.2.x86_64.rpm
de4489f06460799dd96a16c59961a7d7
mes5/x86_64/lib64t1lib-devel-5.1.2-4.3mdvmes5.2.x86_64.rpm
6ee693bfba9b31dacb6d63e3be6a7278
mes5/x86_64/lib64t1lib-static-devel-5.1.2-4.3mdvmes5.2.x86_64.rpm
5b653b672c557f8ac0b24f7d9bacc182
mes5/x86_64/t1lib-config-5.1.2-4.3mdvmes5.2.x86_64.rpm
405cb3191a475b026d146782c3c236fb
mes5/x86_64/t1lib-progs-5.1.2-4.3mdvmes5.2.x86_64.rpm
00d9c9fe6fdea354b2ae5829ad69186d mes5/SRPMS/t1lib-5.1.2-4.3mdvmes5.2.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>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)
iD8DBQFPDuaZmqjQ0CJFipgRAnPJAJ9mYAnw85yoh9c9tBFnvAiPQyMqwACfXTY2
KbTRllp+EhE/rMY4I4zgqoo=
=mYB5
-----END PGP SIGNATURE-----
Posljednje sigurnosne preporuke