Ubuntu 14.04 LTS : linux vulnerabilities (USN-2563-1)

Ubuntu Security Notice (C) 2015-2016 Canonical, Inc. / NASL script (C) 2015-2016 Tenable Network Security, Inc.


Synopsis :

The remote Ubuntu host is missing one or more security-related
patches.

Description :

Sun Baoliang discovered a use after free flaw in the Linux kernel's
SCTP (Stream Control Transmission Protocol) subsystem during INIT
collisions. A remote attacker could exploit this flaw to cause a
denial of service (system crash) or potentially escalate their
privileges on the system. (CVE-2015-1421)

Marcelo Leitner discovered a flaw in the Linux kernel's routing of
packets to too many different dsts/too fast. A remote attacker can
exploit this flaw to cause a denial of service (system crash).
(CVE-2015-1465)

An integer overflow was discovered in the stack randomization feature
of the Linux kernel on 64 bit platforms. A local attacker could
exploit this flaw to bypass the Address Space Layout Randomization
(ASLR) protection mechanism. (CVE-2015-1593)

An information leak was discovered in the Linux Kernel's handling of
userspace configuration of the link layer control (LLC). A local user
could exploit this flaw to read data from other sysctl settings.
(CVE-2015-2041)

An information leak was discovered in how the Linux kernel handles
setting the Reliable Datagram Sockets (RDS) settings. A local user
could exploit this flaw to read data from other sysctl settings.
(CVE-2015-2042).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.

Solution :

Update the affected linux-image-3.13-generic,
linux-image-3.13-generic-lpae and / or linux-image-3.13-lowlatency
packages.

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 7.4
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 82662 ()

Bugtraq ID: 72356
72435

CVE ID: CVE-2015-1421
CVE-2015-1465
CVE-2015-1593
CVE-2015-2041
CVE-2015-2042

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