Users login

Create an account »

JOIN XATRIX

Users login

Home » Hacking News » Gentoo 200304-05: snort multiple vulnerabilities

Gentoo 200304-05: snort multiple vulnerabilities

by Nikola Strahija on April 22nd, 2003 Several vulnerabilities have been found in Snort preprocessors which, if exploited, could allow remote attackers to execute arbitrary code.


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

- - - ---------------------------------------------------------------------
GENTOO LINUX SECURITY ANNOUNCEMENT 200304-05
- - - ---------------------------------------------------------------------

PACKAGE : snort
SUMMARY : Multiple Vulnerabilities in Snort Preprocessors
DATE : 2003-04-22 07:41 UTC
EXPLOIT : remote
VERSIONS AFFECTED : FIXED VERSION : >=snort-2.0.0
CVE : CAN-2003-0029 CAN-2003-0033

- - - ---------------------------------------------------------------------

- - From advisories:

"The Sourcefire Vulnerability Research Team has learned of an integer overflow
in the Snort stream4 preprocessor used by the Sourcefire Network Sensor
product line. The Snort stream4 preprocessor (spp_stream4) incorrectly
calculates segment size parameters during stream reassembly for certain
sequence number ranges which can lead to an integer overflow that can be
expanded to a heap overflow.

The Snort stream4 flaw may lead to a denial of service (DoS) attack or
remote command execution on a host running Snort. This attack can be launched
by crafting TCP stream packets and transmitting them over a network segment
that is being monitored by a vulnerable Snort implementation. In its
default configuration, certain versions of snort are vulnerable to this
attack, as is the default configuration of the Snort IDS."

"Remote attackers may exploit the buffer overflow condition to run
arbitrary code on a Snort sensor with the privileges of the Snort IDS
process, which typically runs as the superuser. The vulnerable
preprocessor is enabled by default. It is not necessary to establish an
actual connection to a RPC portmapper service to exploit this
vulnerability."

Read the full advisories at:
http://www.coresecurity.com/common/showdoc.php?idx=313&idxseccion=10
http://www.iss.net/issEn/delivery/xforce/alertdetail.jsp?oid=21951
http://www.snort.org/advisories/snort-2003-04-16-1.txt

SOLUTION

It is recommended that all Gentoo Linux users who are running
net-analyzer/snort upgrade to snort-2.0.0 as follows:

emerge sync
emerge snort
emerge clean

- - - ---------------------------------------------------------------------
[email protected] - GnuPG key is available at http://cvs.gentoo.org/~aliz
- - - ---------------------------------------------------------------------
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.1 (GNU/Linux)

iD8DBQE+pPJDfT7nyhUpoZMRAh7CAJ9XFxvHhKal5RATFxolc5cXe+VU/gCfQuSe
4d/yDOhRLnIaN1oJiBLonWE=
=4IOX
-----END PGP SIGNATURE-----


Newsletter signup

Signup to our monthly newsletter and stay in touch with IT news!

Free E-books

We've got ebooks! But they're not online. :( Please give us a few days to bring downloads back.

Contact

Have something to say or just wanna drop us a line? Please keep this in mind: to spam, we reply with spam.

Contact us »