Monthly Archives: June 2016

Redhat

RHSA-2016:1341-1: Important: kernel-rt security and bug fix update

Red Hat Enterprise Linux: An update for kernel-rt is now available for Red Hat Enterprise MRG 2.5.

Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.
CVE-2015-8767, CVE-2016-3707, CVE-2016-4565

Security

JSON Swagger CodeGen Parameter Injector

This Metasploit module generates a Open API Specification 2.0 (Swagger) compliant json document that includes payload insertion points in parameters. In order for the payload to be executed, an attacker must convince someone to generate code from a specially modified swagger.json file within a vulnerable swagger-codgen appliance/container/api/service, and then to execute that generated code (or include it into software which will later be executed by another victim). By doing so, an attacker can execute arbitrary code as the victim user. The same vulnerability exists in the YAML format.

Ubuntu

USN-3016-1: Linux kernel vulnerabilities

Ubuntu Security Notice USN-3016-1

27th June, 2016

linux vulnerabilities

A security issue affects these releases of Ubuntu and its
derivatives:

  • Ubuntu 16.04 LTS

Summary

Several security issues were fixed in the kernel.

Software description

  • linux
    – Linux kernel

Details

Jesse Hertz and Tim Newsham discovered that the Linux netfilter
implementation did not correctly perform validation when handling 32 bit
compatibility IPT_SO_SET_REPLACE events on 64 bit platforms. A local
unprivileged attacker could use this to cause a denial of service (system
crash) or execute arbitrary code with administrative privileges.
(CVE-2016-4997)

Kangjie Lu discovered an information leak in the core USB implementation in
the Linux kernel. A local attacker could use this to obtain potentially
sensitive information from kernel memory. (CVE-2016-4482)

Kangjie Lu discovered an information leak in the timer handling
implementation in the Advanced Linux Sound Architecture (ALSA) subsystem of
the Linux kernel. A local attacker could use this to obtain potentially
sensitive information from kernel memory. (CVE-2016-4569, CVE-2016-4578)

Kangjie Lu discovered an information leak in the X.25 Call Request handling
in the Linux kernel. A local attacker could use this to obtain potentially
sensitive information from kernel memory. (CVE-2016-4580)

It was discovered that an information leak exists in the Rock Ridge
implementation in the Linux kernel. A local attacker who is able to mount a
malicious iso9660 file system image could exploit this flaw to obtain
potentially sensitive information from kernel memory. (CVE-2016-4913)

Baozeng Ding discovered that the Transparent Inter-process Communication
(TIPC) implementation in the Linux kernel did not verify socket existence
before use in some situations. A local attacker could use this to cause a
denial of service (system crash). (CVE-2016-4951)

Jesse Hertz and Tim Newsham discovered that the Linux netfilter
implementation did not correctly perform validation when handling
IPT_SO_SET_REPLACE events. A local unprivileged attacker could use this to
cause a denial of service (system crash) or obtain potentially sensitive
information from kernel memory. (CVE-2016-4998)

Update instructions

The problem can be corrected by updating your system to the following
package version:

Ubuntu 16.04 LTS:
linux-image-4.4.0-28-powerpc64-smp

4.4.0-28.47
linux-image-4.4.0-28-lowlatency

4.4.0-28.47
linux-image-4.4.0-28-powerpc-smp

4.4.0-28.47
linux-image-4.4.0-28-generic-lpae

4.4.0-28.47
linux-image-4.4.0-28-powerpc64-emb

4.4.0-28.47
linux-image-4.4.0-28-generic

4.4.0-28.47
linux-image-4.4.0-28-powerpc-e500mc

4.4.0-28.47

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.

References

CVE-2016-4482,

CVE-2016-4569,

CVE-2016-4578,

CVE-2016-4580,

CVE-2016-4913,

CVE-2016-4951,

CVE-2016-4997,

CVE-2016-4998

Ubuntu

USN-3016-2: Linux kernel (Raspberry Pi 2) vulnerabilities

Ubuntu Security Notice USN-3016-2

27th June, 2016

linux-raspi2 vulnerabilities

A security issue affects these releases of Ubuntu and its
derivatives:

  • Ubuntu 16.04 LTS

Summary

Several security issues were fixed in the kernel.

Software description

  • linux-raspi2
    – Linux kernel for Raspberry Pi 2

Details

Jesse Hertz and Tim Newsham discovered that the Linux netfilter
implementation did not correctly perform validation when handling 32 bit
compatibility IPT_SO_SET_REPLACE events on 64 bit platforms. A local
unprivileged attacker could use this to cause a denial of service (system
crash) or execute arbitrary code with administrative privileges.
(CVE-2016-4997)

Kangjie Lu discovered an information leak in the core USB implementation in
the Linux kernel. A local attacker could use this to obtain potentially
sensitive information from kernel memory. (CVE-2016-4482)

Kangjie Lu discovered an information leak in the timer handling
implementation in the Advanced Linux Sound Architecture (ALSA) subsystem of
the Linux kernel. A local attacker could use this to obtain potentially
sensitive information from kernel memory. (CVE-2016-4569, CVE-2016-4578)

Kangjie Lu discovered an information leak in the X.25 Call Request handling
in the Linux kernel. A local attacker could use this to obtain potentially
sensitive information from kernel memory. (CVE-2016-4580)

It was discovered that an information leak exists in the Rock Ridge
implementation in the Linux kernel. A local attacker who is able to mount a
malicious iso9660 file system image could exploit this flaw to obtain
potentially sensitive information from kernel memory. (CVE-2016-4913)

Baozeng Ding discovered that the Transparent Inter-process Communication
(TIPC) implementation in the Linux kernel did not verify socket existence
before use in some situations. A local attacker could use this to cause a
denial of service (system crash). (CVE-2016-4951)

Jesse Hertz and Tim Newsham discovered that the Linux netfilter
implementation did not correctly perform validation when handling
IPT_SO_SET_REPLACE events. A local unprivileged attacker could use this to
cause a denial of service (system crash) or obtain potentially sensitive
information from kernel memory. (CVE-2016-4998)

Update instructions

The problem can be corrected by updating your system to the following
package version:

Ubuntu 16.04 LTS:
linux-image-4.4.0-1016-raspi2

4.4.0-1016.22

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.

References

CVE-2016-4482,

CVE-2016-4569,

CVE-2016-4578,

CVE-2016-4580,

CVE-2016-4913,

CVE-2016-4951,

CVE-2016-4997,

CVE-2016-4998