| Description: | Description:
The remote host is missing updates announced in
advisory CLA-2004:852.
The Linux kernel is responsible for handling the basic functions of
the GNU/Linux operating system.
This announcement fixes the following vulnerabilities:
1. Integer overflow in netfilter's tcp_find_option function
(CVE-2004-0626[1])
Adam Osuchowski and Tomasz Dubinski noticed[2] that when using
iptables and TCP options rules, the tcp_find_option function of the
netfilter subsystem in Linux kernel 2.6 allows remote attackers to
cause a denial of service via a large option length that produces a
negative integer after a casting operation to the char type. They
also provided the corretion for this bug.
2. Missing DAC check's in inode_change_ok function
(CVE-2004-0497[3])
Missing Discretionary Access Control (DAC) checks in chown system
call allowed a local user to change the group ownership of arbitrary
files to a group that he or she belongs to, leading to a privileges
escalation vulnerability.
3. Integer overflow in ip_setsockopt function (CVE-2004-0424[4])
iSEC Security Research published[5] an integer overflow
vulnerability[4] in the ip_setsockopt function on Linux kernel 2.6.1
through 2.6.3 which allows local users to cause a denial of service
condition or execute arbitrary code via the MCAST_MSFILTER socket
option.
4. Incorrect usage of the fb_copy_cmap function in framebuffer
(CVE-2004-0229[6])
The framebuffer driver in Linux kernel 2.6.x did not properly use the
fb_copy_cmap function, possibly allowing privileges escalation for
local attackers.
5. Integer overflow in the cpufreq proc handler (CVE-2004-0228[7])
Brad Spender found an integer overflow bug in the Linux kernel
cpufreq code that allowed a local attacker to read arbitrary kernel
memory.
Solution:
The apt tool can be used to perform RPM package upgrades
by running 'apt-get update' followed by 'apt-get upgrade'
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0626
http://www.securityfocus.com/archive/1/367615/2004-06-27/2004-07-03/0
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0497
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0424
http://www.isec.pl/vulnerabilities/isec-0015-msfilter.txt
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0229
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0228
http://www.conectiva.com.br/suporte/pr/sistema.kernel.atualizar.html
http://www.securityspace.com/smysecure/catid.html?in=CLA-2004:852
http://distro.conectiva.com.br/atualizacoes/index.php?id=a&anuncio=002004
Risk factor : High
CVSS Score:
7.2
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