U radu programskog paketa quagga uočena su i ispravljena tri propusta koje zlonamjerni napadači mogu iskoristiti za DoS napad.
Paket:
quagga 0.x
Operacijski sustavi:
Fedora 17
Kritičnost:
5
Problem:
pogreška u programskoj komponenti, preljev međuspremnika
Iskorištavanje:
udaljeno
Posljedica:
uskraćivanje usluga (DoS)
Rješenje:
programska zakrpa proizvođača
CVE:
CVE-2012-0249, CVE-2012-0250, CVE-2012-0255
Izvorni ID preporuke:
FEDORA-2012-5352
Izvor:
Fedora
Problem:
Prilikom rada programskog paketa uočeno je da dolazi do preljeva međuspremnika u programskoj funkciji "ospf_ls_upd_list_lsa" i u implementaciji protokola OSPFv2 te je otkrivena ranjivost u implementaciji protokola BGP.
Posljedica:
Udaljeni zlonamjerni napadači mogu iskoristiti nedostatke za napad uskraćivanja usluga (eng. Denial of Service, DoS).
Rješenje:
Svim korisnicima se savjetuje korištenje službenih programskih zakrpi.
--------------------------------------------------------------------------------
Fedora Update Notification
FEDORA-2012-5352
2012-04-05 18:19:02
--------------------------------------------------------------------------------
Name : quagga
Product : Fedora 17
Version : 0.99.20.1
Release : 1.fc17
URL : http://www.quagga.net
Summary : Routing daemon
Description :
Quagga is a free software that manages TCP/IP based routing
protocol. It takes multi-server and multi-thread approach to resolve
the current complexity of the Internet.
Quagga supports BGP4, BGP4+, OSPFv2, OSPFv3, RIPv1, RIPv2, and RIPng.
Quagga is intended to be used as a Route Server and a Route Reflector. It is
not a toolkit, it provides full routing power under a new architecture.
Quagga by design has a process for each protocol.
Quagga is a fork of GNU Zebra.
--------------------------------------------------------------------------------
Update Information:
fixes CVEs, updates to latest upstream quagga-0.99.20.1
--------------------------------------------------------------------------------
References:
[ 1 ] Bug #802827 - CVE-2012-0249 quagga (ospfd): Assertion failure due
improper length check for a received LS-Update OSPF packet
https://bugzilla.redhat.com/show_bug.cgi?id=802827
[ 2 ] Bug #802829 - CVE-2012-0250 quagga (ospfd): Crash by processing
LS-Update OSPF packet due improper length check of the Network-LSA structures
https://bugzilla.redhat.com/show_bug.cgi?id=802829
[ 3 ] Bug #802781 - CVE-2012-0255 quagga (bgpd): Assertion failure by
processing malformed AS4 capability in BGP OPEN message
https://bugzilla.redhat.com/show_bug.cgi?id=802781
--------------------------------------------------------------------------------
This update can be installed with the "yum" update program. Use
su -c 'yum update quagga' at the command line.
For more information, refer to "Managing Software with yum",
available at http://docs.fedoraproject.org/yum/.
All packages are signed with the Fedora Project GPG key. More details on the
GPG keys used by the Fedora Project can be found at
https://fedoraproject.org/keys
--------------------------------------------------------------------------------
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