| Description: | Summary:
The remote host is missing an update for the 'linux-source-2.6.12, linux-source-2.6.15, linux-source-2.6.17' package(s) announced via the USN-395-1 advisory.
Vulnerability Insight:
Mark Dowd discovered that the netfilter iptables module did not
correctly handle fragmented packets. By sending specially crafted
packets, a remote attacker could exploit this to bypass firewall
rules. This has only be fixed for Ubuntu 6.10, the corresponding fix
for Ubuntu 5.10 and 6.06 will follow soon. (CVE-2006-4572)
Dmitriy Monakhov discovered an information leak in the
__block_prepare_write() function. During error recovery, this function
did not properly clear memory buffers which could allow local users to
read portions of unlinked files. This only affects Ubuntu 5.10.
(CVE-2006-4813)
ADLab Venustech Info Ltd discovered that the ATM network driver
referenced an already released pointer in some circumstances. By
sending specially crafted packets to a host over ATM, a remote
attacker could exploit this to crash that host. This does not affect
Ubuntu 6.10. (CVE-2006-4997)
Matthias Andree discovered that the NFS locking management daemon
(lockd) did not correctly handle mixing of 'lock' and 'nolock' option
mounts on the same client. A remote attacker could exploit this to
crash lockd and thus rendering the NFS imports inaccessible. This only
affects Ubuntu 5.10. (CVE-2006-5158)
The task switching code did not save and restore EFLAGS of processes.
By starting a specially crafted executable, a local attacker could
exploit this to eventually crash many other running processes. This
does not affect Ubuntu 6.10. (CVE-2006-5173)
James Morris discovered that the ip6fl_get_n() function incorrectly
handled flow labels. A local attacker could exploit this to crash the
kernel. (CVE-2006-5619)
Fabio Massimo Di Nitto discovered that the sys_get_robust_list and
sys_set_robust_list system calls lacked proper lock handling on the
powerpc platform. A local attacker could exploit this to create
unkillable processes, drain all available CPU/memory, and render the
machine unrebootable. This only affects Ubuntu 6.10. (CVE-2006-5648)
Fabio Massimo Di Nitto discovered a flaw in the alignment check
exception handling on the powerpc platform. A local attacker could
exploit this to cause a kernel panic and crash the machine.
(CVE-2006-5649)
Certain corrupted squashfs file system images caused a memory
allocation to be freed twice. By mounting a specially crafted squashfs
file system, a local attacker could exploit this to crash the kernel.
This does not affect Ubuntu 5.10. (CVE-2006-5701)
An integer overflow was found in the get_fdb_entries() function of the
network bridging code. By executing a specially crafted ioctl, a local
attacker could exploit this to execute arbitrary code with root
privileges. (CVE-2006-5751)
Affected Software/OS:
'linux-source-2.6.12, linux-source-2.6.15, linux-source-2.6.17' package(s) on Ubuntu 5.10, Ubuntu 6.06, Ubuntu 6.10.
Solution:
Please install the updated package(s).
CVSS Score:
7.5
CVSS Vector:
AV:N/AC:L/Au:N/C:P/I:P/A:P
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