This script is Copyright (C) 2018-2024 and is owned by Tenable, Inc. or an Affiliate thereof.SL_20180619_KERNEL_ON_SL6_X.NASLScientific Linux Security Update : kernel on SL6.x i386/x86_64 (20180619) (Spectre)
CVSS2
Attack Vector
NETWORK
Attack Complexity
HIGH
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:H/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
65.5%
Security Fix(es) :
-
An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of Load & Store instructions (a commonly used performance optimization). It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory read from address to which a recent memory write has occurred may see an older value and subsequently cause an update into the microprocessor’s data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to read privileged memory by conducting targeted cache side-channel attacks.
(CVE-2018-3639, PowerPC) -
kernel: net/packet: overflow in check for priv area size (CVE-2017-7308)
-
kernel: AIO interface didn’t use rw_verify_area() for checking mandatory locking on files and size of access (CVE-2012-6701)
-
kernel: AIO write triggers integer overflow in some protocols (CVE-2015-8830)
-
kernel: NULL pointer dereference via keyctl (CVE-2016-8650)
-
kernel: ping socket / AF_LLC connect() sin_family race (CVE-2017-2671)
-
kernel: Race condition between multiple sys_perf_event_open() calls (CVE-2017-6001)
-
kernel: Incorrect error handling in the set_mempolicy and mbind compat syscalls in mm/mempolicy.c (CVE-2017-7616)
-
kernel: mm subsystem does not properly enforce the CONFIG_STRICT_DEVMEM protection mechanism (CVE-2017-7889)
-
kernel: Double free in the inet_csk_clone_lock function in net/ipv4/inet_connection_sock.c (CVE-2017-8890)
-
kernel: net: sctp_v6_create_accept_sk function mishandles inheritance (CVE-2017-9075)
-
kernel: net: IPv6 DCCP implementation mishandles inheritance (CVE-2017-9076)
-
kernel: net: tcp_v6_syn_recv_sock function mishandles inheritance (CVE-2017-9077)
-
kernel: memory leak when merging buffers in SCSI IO vectors (CVE-2017-12190)
-
kernel: vfs: BUG in truncate_inode_pages_range() and fuse client (CVE-2017-15121)
-
kernel: Race condition in drivers/md/dm.c:dm_get_from_kobject() allows local users to cause a denial of service (CVE-2017-18203)
-
kernel: a NULL pointer dereference in net/dccp/output.c:dccp_write_xmit() leads to a system crash (CVE-2018-1130)
-
kernel: Missing length check of payload in net/sctp/sm_make_chunk.c:_sctp_make_chunk() function allows denial of service (CVE-2018-5803)
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text is (C) Scientific Linux.
#
include('compat.inc');
if (description)
{
script_id(110887);
script_version("1.8");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/09/06");
script_cve_id(
"CVE-2012-6701",
"CVE-2015-8830",
"CVE-2016-8650",
"CVE-2017-12190",
"CVE-2017-15121",
"CVE-2017-18203",
"CVE-2017-2671",
"CVE-2017-6001",
"CVE-2017-7308",
"CVE-2017-7616",
"CVE-2017-7889",
"CVE-2017-8890",
"CVE-2017-9075",
"CVE-2017-9076",
"CVE-2017-9077",
"CVE-2018-1130",
"CVE-2018-3639",
"CVE-2018-5803"
);
script_name(english:"Scientific Linux Security Update : kernel on SL6.x i386/x86_64 (20180619) (Spectre)");
script_set_attribute(attribute:"synopsis", value:
"The remote Scientific Linux host is missing one or more security
updates.");
script_set_attribute(attribute:"description", value:
"Security Fix(es) :
- An industry-wide issue was found in the way many modern
microprocessor designs have implemented speculative
execution of Load & Store instructions (a commonly
used performance optimization). It relies on the
presence of a precisely-defined instruction sequence in
the privileged code as well as the fact that memory read
from address to which a recent memory write has occurred
may see an older value and subsequently cause an update
into the microprocessor's data cache even for
speculatively executed instructions that never actually
commit (retire). As a result, an unprivileged attacker
could use this flaw to read privileged memory by
conducting targeted cache side-channel attacks.
(CVE-2018-3639, PowerPC)
- kernel: net/packet: overflow in check for priv area size
(CVE-2017-7308)
- kernel: AIO interface didn't use rw_verify_area() for
checking mandatory locking on files and size of access
(CVE-2012-6701)
- kernel: AIO write triggers integer overflow in some
protocols (CVE-2015-8830)
- kernel: NULL pointer dereference via keyctl
(CVE-2016-8650)
- kernel: ping socket / AF_LLC connect() sin_family race
(CVE-2017-2671)
- kernel: Race condition between multiple
sys_perf_event_open() calls (CVE-2017-6001)
- kernel: Incorrect error handling in the set_mempolicy
and mbind compat syscalls in mm/mempolicy.c
(CVE-2017-7616)
- kernel: mm subsystem does not properly enforce the
CONFIG_STRICT_DEVMEM protection mechanism
(CVE-2017-7889)
- kernel: Double free in the inet_csk_clone_lock function
in net/ipv4/inet_connection_sock.c (CVE-2017-8890)
- kernel: net: sctp_v6_create_accept_sk function
mishandles inheritance (CVE-2017-9075)
- kernel: net: IPv6 DCCP implementation mishandles
inheritance (CVE-2017-9076)
- kernel: net: tcp_v6_syn_recv_sock function mishandles
inheritance (CVE-2017-9077)
- kernel: memory leak when merging buffers in SCSI IO
vectors (CVE-2017-12190)
- kernel: vfs: BUG in truncate_inode_pages_range() and
fuse client (CVE-2017-15121)
- kernel: Race condition in
drivers/md/dm.c:dm_get_from_kobject() allows local users
to cause a denial of service (CVE-2017-18203)
- kernel: a NULL pointer dereference in
net/dccp/output.c:dccp_write_xmit() leads to a system
crash (CVE-2018-1130)
- kernel: Missing length check of payload in
net/sctp/sm_make_chunk.c:_sctp_make_chunk() function
allows denial of service (CVE-2018-5803)");
# https://listserv.fnal.gov/scripts/wa.exe?A2=ind1807&L=scientific-linux-errata&F=&S=&P=1444
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?4e78e31e");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-6001");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2017-9077");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"exploit_framework_core", value:"true");
script_set_attribute(attribute:"exploited_by_malware", value:"true");
script_set_attribute(attribute:"metasploit_name", value:'AF_PACKET packet_set_ring Privilege Escalation');
script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
script_set_attribute(attribute:"in_the_news", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2016/05/02");
script_set_attribute(attribute:"patch_publication_date", value:"2018/06/19");
script_set_attribute(attribute:"plugin_publication_date", value:"2018/07/03");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-abi-whitelists");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-debug");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-debug-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-debug-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-debuginfo-common-i686");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-debuginfo-common-x86_64");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-doc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-firmware");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-headers");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:perf");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:perf-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:python-perf");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:python-perf-debuginfo");
script_set_attribute(attribute:"cpe", value:"x-cpe:/o:fermilab:scientific_linux");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Scientific Linux Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2018-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/RedHat/release", "Host/RedHat/rpm-list");
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("rpm.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Scientific Linux " >!< release) audit(AUDIT_HOST_NOT, "running Scientific Linux");
os_ver = pregmatch(pattern: "Scientific Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Scientific Linux");
os_ver = os_ver[1];
if (! preg(pattern:"^6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Scientific Linux 6.x", "Scientific Linux " + os_ver);
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu >!< "x86_64" && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Scientific Linux", cpu);
flag = 0;
if (rpm_check(release:"SL6", reference:"kernel-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-abi-whitelists-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-debug-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-debug-debuginfo-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-debug-devel-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-debuginfo-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-debuginfo-common-i686-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", cpu:"x86_64", reference:"kernel-debuginfo-common-x86_64-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-devel-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-doc-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-firmware-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-headers-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", reference:"perf-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", reference:"perf-debuginfo-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", reference:"python-perf-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", reference:"python-perf-debuginfo-2.6.32-754.el6")) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : rpm_report_get()
);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "kernel / kernel-abi-whitelists / kernel-debug / etc");
}
References
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-6701
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8830
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-8650
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12190
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15121
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-18203
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2671
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-6001
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7308
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7616
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7889
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-8890
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9075
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9076
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9077
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1130
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-3639
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5803
www.nessus.org/u?4e78e31e
Related
CVSS2
Attack Vector
NETWORK
Attack Complexity
HIGH
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:H/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
65.5%