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Test ID:1.3.6.1.4.1.25623.1.0.843409
Category:Ubuntu Local Security Checks
Title:Ubuntu Update for linux USN-3523-1
Summary:The remote host is missing an update for the 'linux'; package(s) announced via the referenced advisory.
Description:Summary:
The remote host is missing an update for the 'linux'
package(s) announced via the referenced advisory.

Vulnerability Insight:
Jann Horn discovered that microprocessors
utilizing speculative execution and indirect branch prediction may allow
unauthorized memory reads via sidechannel attacks. This flaw is known as
Meltdown. A local attacker could use this to expose sensitive information,
including kernel memory. (CVE-2017-5754) Jann Horn discovered that the Berkeley
Packet Filter (BPF) implementation in the Linux kernel did not properly check
the relationship between pointer values and the BPF stack. A local attacker
could use this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2017-17863) Jann Horn discovered that the Berkeley Packet
Filter (BPF) implementation in the Linux kernel improperly performed sign
extension in some situations. A local attacker could use this to cause a denial
of service (system crash) or possibly execute arbitrary code. (CVE-2017-16995)
Alexei Starovoitov discovered that the Berkeley Packet Filter (BPF)
implementation in the Linux kernel contained a branch-pruning logic issue around
unreachable code. A local attacker could use this to cause a denial of service.
(CVE-2017-17862) Jann Horn discovered that the Berkeley Packet Filter (BPF)
implementation in the Linux kernel mishandled pointer data values in some
situations. A local attacker could use this to expose sensitive information
(kernel memory). (CVE-2017-17864)

Affected Software/OS:
linux on Ubuntu 17.10

Solution:
Please Install the Updated Packages.

CVSS Score:
7.2

CVSS Vector:
AV:L/AC:L/Au:N/C:C/I:C/A:C

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2017-5754
BugTraq ID: 102378
http://www.securityfocus.com/bid/102378
BugTraq ID: 106128
http://www.securityfocus.com/bid/106128
CERT/CC vulnerability note: VU#180049
https://www.kb.cert.org/vuls/id/180049
CERT/CC vulnerability note: VU#584653
http://www.kb.cert.org/vuls/id/584653
Cisco Security Advisory: 20180104 CPU Side-Channel Information Disclosure Vulnerabilities
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180104-cpusidechannel
Debian Security Information: DSA-4078 (Google Search)
https://www.debian.org/security/2018/dsa-4078
Debian Security Information: DSA-4082 (Google Search)
https://www.debian.org/security/2018/dsa-4082
Debian Security Information: DSA-4120 (Google Search)
https://www.debian.org/security/2018/dsa-4120
FreeBSD Security Advisory: FreeBSD-SA-18:03
https://security.FreeBSD.org/advisories/FreeBSD-SA-18:03.speculative_execution.asc
https://security.gentoo.org/glsa/201810-06
https://googleprojectzero.blogspot.com/2018/01/reading-privileged-memory-with-side.html
https://meltdownattack.com/
https://security.googleblog.com/2018/01/todays-cpu-vulnerability-what-you-need.html
https://www.oracle.com/security-alerts/cpuapr2020.html
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
https://lists.debian.org/debian-lts-announce/2018/01/msg00004.html
RedHat Security Advisories: RHSA-2018:0292
https://access.redhat.com/errata/RHSA-2018:0292
http://www.securitytracker.com/id/1040071
SuSE Security Announcement: SUSE-SU-2018:0010 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00006.html
SuSE Security Announcement: SUSE-SU-2018:0011 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html
SuSE Security Announcement: SUSE-SU-2018:0012 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00008.html
SuSE Security Announcement: openSUSE-SU-2018:0022 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00014.html
SuSE Security Announcement: openSUSE-SU-2018:0023 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00016.html
https://usn.ubuntu.com/usn/usn-3516-1/
https://usn.ubuntu.com/usn/usn-3522-2/
https://usn.ubuntu.com/3522-3/
https://usn.ubuntu.com/3522-4/
https://usn.ubuntu.com/3523-1/
https://usn.ubuntu.com/usn/usn-3523-2/
https://usn.ubuntu.com/usn/usn-3524-2/
https://usn.ubuntu.com/usn/usn-3525-1/
https://usn.ubuntu.com/3540-2/
https://usn.ubuntu.com/3541-2/
https://usn.ubuntu.com/3583-1/
https://usn.ubuntu.com/3597-1/
https://usn.ubuntu.com/3597-2/
CopyrightCopyright (C) 2018 Greenbone Networks GmbH

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