6.9 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
0.012 Low
EPSS
Percentile
85.0%
An exploitable buffer overflow vulnerability exists in the LoadEncoding functionality of the R programming language version 3.3.0. A specially crafted R script can cause a buffer overflow resulting in a memory corruption. An attacker can send a malicious R script to trigger this vulnerability. (CVE-2017-8714)
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux AMI Security Advisory ALAS-2017-819.
#
include("compat.inc");
if (description)
{
script_id(99532);
script_version("3.4");
script_cvs_date("Date: 2018/04/18 15:09:36");
script_cve_id("CVE-2017-8714");
script_xref(name:"ALAS", value:"2017-819");
script_name(english:"Amazon Linux AMI : R (ALAS-2017-819)");
script_summary(english:"Checks rpm output for the updated packages");
script_set_attribute(
attribute:"synopsis",
value:"The remote Amazon Linux AMI host is missing a security update."
);
script_set_attribute(
attribute:"description",
value:
"An exploitable buffer overflow vulnerability exists in the
LoadEncoding functionality of the R programming language version
3.3.0. A specially crafted R script can cause a buffer overflow
resulting in a memory corruption. An attacker can send a malicious R
script to trigger this vulnerability. (CVE-2017-8714)"
);
script_set_attribute(
attribute:"see_also",
value:"https://alas.aws.amazon.com/ALAS-2017-819.html"
);
script_set_attribute(
attribute:"solution",
value:"Run 'yum update R' to update your system."
);
script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:R");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:R-core");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:R-core-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:R-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:R-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:R-java");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:R-java-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libRmath");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libRmath-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libRmath-static");
script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux");
script_set_attribute(attribute:"patch_publication_date", value:"2017/04/20");
script_set_attribute(attribute:"plugin_publication_date", value:"2017/04/21");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2017-2018 Tenable Network Security, Inc.");
script_family(english:"Amazon Linux Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/AmazonLinux/release", "Host/AmazonLinux/rpm-list");
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("rpm.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/AmazonLinux/release");
if (isnull(release) || !strlen(release)) audit(AUDIT_OS_NOT, "Amazon Linux");
os_ver = pregmatch(pattern: "^AL(A|\d)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
os_ver = os_ver[1];
if (os_ver != "A")
{
if (os_ver == 'A') os_ver = 'AMI';
audit(AUDIT_OS_NOT, "Amazon Linux AMI", "Amazon Linux " + os_ver);
}
if (!get_kb_item("Host/AmazonLinux/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
flag = 0;
if (rpm_check(release:"ALA", reference:"R-3.3.3-1.51.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"R-core-3.3.3-1.51.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"R-core-devel-3.3.3-1.51.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"R-debuginfo-3.3.3-1.51.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"R-devel-3.3.3-1.51.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"R-java-3.3.3-1.51.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"R-java-devel-3.3.3-1.51.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"libRmath-3.3.3-1.51.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"libRmath-devel-3.3.3-1.51.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"libRmath-static-3.3.3-1.51.amzn1")) flag++;
if (flag)
{
if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
else security_warning(0);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "R / R-core / R-core-devel / R-debuginfo / R-devel / R-java / etc");
}
Vendor | Product | Version | CPE |
---|---|---|---|
amazon | linux | r | p-cpe:/a:amazon:linux:r |
amazon | linux | r-core | p-cpe:/a:amazon:linux:r-core |
amazon | linux | r-core-devel | p-cpe:/a:amazon:linux:r-core-devel |
amazon | linux | r-debuginfo | p-cpe:/a:amazon:linux:r-debuginfo |
amazon | linux | r-devel | p-cpe:/a:amazon:linux:r-devel |
amazon | linux | r-java | p-cpe:/a:amazon:linux:r-java |
amazon | linux | r-java-devel | p-cpe:/a:amazon:linux:r-java-devel |
amazon | linux | librmath | p-cpe:/a:amazon:linux:librmath |
amazon | linux | librmath-devel | p-cpe:/a:amazon:linux:librmath-devel |
amazon | linux | librmath-static | p-cpe:/a:amazon:linux:librmath-static |
6.9 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
0.012 Low
EPSS
Percentile
85.0%