EulerOS 2.0 SP1 : kernel (EulerOS-SA-2017-1071)

This script is Copyright (C) 2017 Tenable Network Security, Inc.


Synopsis :

The remote EulerOS host is missing multiple security updates.

Description :

According to the versions of the kernel packages installed, the
EulerOS installation on the remote host is affected by the following
vulnerabilities :

- A flaw was found in the Linux kernel key management
subsystem in which a local attacker could crash the
kernel or corrupt the stack and additional memory
(denial of service) by supplying a specially crafted
RSA key. This flaw panics the machine during the
verification of the RSA key. (CVE-2016-8650)

- A flaw was found in the Linux kernel's implementation
of setsockopt for the SO_{SND|RCV}BUFFORCE setsockopt()
system call. Users with non-namespace CAP_NET_ADMIN are
able to trigger this call and create a situation in
which the sockets sendbuff data size could be negative.
This could adversely affect memory allocations and
create situations where the system could crash or cause
memory corruption. (CVE-2016-9793)

- A flaw was found in the Linux kernel's handling of
clearing SELinux attributes on /proc/pid/attr files. An
empty (null) write to this file can crash the system by
causing the system to attempt to access unmapped kernel
memory. (CVE-2017-2618)

- The keyring_search_aux function in
security/keys/keyring.c in the Linux kernel through
3.14.79 allows local users to cause a denial of service
(NULL pointer dereference and OOPS) via a request_key
system call for the 'dead' type.(CVE-2017-6951)

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

See also :

http://www.nessus.org/u?ad6dfa06

Solution :

Update the affected kernel packages.

Risk factor :

High / CVSS Base Score : 7.2
(CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 6.0
(CVSS2#E:F/RL:OF/RC:ND)
Public Exploit Available : true

Family: Huawei Local Security Checks

Nessus Plugin ID: 99937 ()

Bugtraq ID:

CVE ID: CVE-2016-8650
CVE-2016-9793
CVE-2017-2618
CVE-2017-6951

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