U radu paketa Tor uočena su dva sigurnosna propusta koje napadač može iskoristiti za dobivanje većih ovlasti i otkrivanje osjetljivih informacija.
Paket:
tor 0.x
Operacijski sustavi:
Debian Linux 4.0 (etch), Debian Linux 5.0 (lenny), Debian Linux 6.0 (squeeze)
Kritičnost:
5.8
Problem:
pogreška u programskoj komponenti
Iskorištavanje:
udaljeno
Posljedica:
dobivanje većih privilegija, otkrivanje osjetljivih informacija
Rješenje:
programska zakrpa proizvođača
CVE:
CVE-2011-2768, CVE-2011-2769
Izvorni ID preporuke:
DSA-2331-1
Izvor:
Debian
Problem:
Potvrđen je sigurnosni nedostatak u dizajnu same aplikacije, a zlonamjernim prijenosnim poslužiteljima je omogućavao saznavanje na koje je druge prijenosnike izravno spojen korisnik tor klijenta.
Posljedica:
Udaljeni napadač navedene ranjivosti može iskoristiti za otkrivanje osjetljivih podataka te dobivanje većih privilegija u sustavu.
Rješenje:
Svim se korisnicima navedenog paketa, u svrhu zaštite sigurnosti, savjetuje nadogradnja paketa na novije inačice.
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Debian Security Advisory DSA-2331-1 Ova e-mail adresa je zaštićena od spambota. Potrebno je omogućiti JavaScript da je vidite.
http://www.debian.org/security/ Moritz Muehlenhoff
October 28, 2011 http://www.debian.org/security/faq
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Package : tor
Vulnerability : several
Problem type : remote
Debian-specific: no
CVE ID : CVE-2011-2768 CVE-2011-2769
It has been discovered by "frosty_un" that a design flaw in Tor, an online
privacy tool, allows malicious relay servers to learn certain information
that they should not be able to learn. Specifically, a relay that a user
connects to directly could learn which other relays that user is
connected to directly. In combination with other attacks, this issue
can lead to deanonymizing the user. The Common Vulnerabilities and
Exposures project has assigned CVE-2011-2768 to this issue.
In addition to fixing the above mentioned issues, the updates to oldstable
and stable fix a number of less critical issues (CVE-2011-2769). Please
see this posting from the Tor blog for more information:
https://blog.torproject.org/blog/tor-02234-released-security-patches
For the oldstable distribution (lenny), this problem has been fixed in
version 0.2.1.31-1~lenny+1. Due to technical limitations in the Debian
archive scripts, the update cannot be released synchronously with the
packages for stable. It will be released shortly.
For the stable distribution (squeeze), this problem has been fixed in
version 0.2.1.31-1.
For the unstable and testing distributions, this problem has been fixed in
version 0.2.2.34-1.
For the experimental distribution, this problem have has fixed in version
0.2.3.6-alpha-1.
We recommend that you upgrade your tor 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.
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