U radu programskog paketa Asterisk otkriven je sigurnosni nedostatak. Radi se o programskoj implementaciji namijenjenoj izgradnji privatne telefonske mreže (eng. Private Branch eXchange PBX). Problem se očituje u prepisivanju spremnika na stogu u funkciji "ast_uri_encode()" u datoteci "main/utils.c". Udaljeni napadač ga može iskoristiti za pokretanje proizvoljnog programskog koda. Svim korisnicima ranjivog paketa, u svrhu zaštite od potencijalnih napada, savjetuje se instalacija odgovarajuće nadogradnje.

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

- -------------------------------------------------------------------------
Debian Security Advisory DSA-2171-1                   Ova e-mail adresa je zaštićena od spambota. Potrebno je omogućiti JavaScript da je vidite.
http://www.debian.org/security/                        Moritz Muehlenhoff
February 21, 2011                      http://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package        : asterisk
Vulnerability  : buffer overflow
Problem type   : remote
Debian-specific: no
CVE ID         : CVE-2011-0495
Debian Bug     : 610487

Matthew Nicholson discovered a buffer overflow in the SIP channel driver
of Asterisk, an open source PBX and telephony toolkit, which could lead
to the execution of arbitrary code.

For the oldstable distribution (lenny), this problem has been fixed in
version 1.4.21.2~dfsg-3+lenny2.

For the stable distribution (squeeze), this problem has been fixed in
version 1.6.2.9-2+squeeze1.

The unstable distribution (sid) will be fixed soon.

We recommend that you upgrade your asterisk packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/

Mailing list: Ova e-mail adresa je zaštićena od spambota. Potrebno je omogućiti JavaScript da je vidite.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.10 (GNU/Linux)

iEYEARECAAYFAk1irj0ACgkQXm3vHE4uylpzaACg7LX3G4Ivkf1zNwBAohNeBfLa
iYwAoNOR2f3wAfEpQ3JaCR+VC7ZGExeg
=jUwL
-----END PGP SIGNATURE-----


-- 
To UNSUBSCRIBE, email to Ova e-mail adresa je zaštićena od spambota. Potrebno je omogućiti JavaScript da je vidite.
with a subject of "unsubscribe". Trouble? Contact Ova e-mail adresa je zaštićena od spambota. Potrebno je omogućiti JavaScript da je vidite.
Archive: http://lists.debian.org/Ova e-mail adresa je zaštićena od spambota. Potrebno je omogućiti JavaScript da je vidite.