Oniguruma before 6.9.3 allows Stack Exhaustion in regcomp.c because of recursion in regparse.c. (CVE-2019-16163)
Oniguruma through 6.9.3, as used in PHP 7.3.x and other products, has a heap-based buffer over-read in str_lower_case_match in regexec.c.(CVE-2019-19246)
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux 2 Security Advisory ALAS-2020-1380.
#
include('compat.inc');
if (description)
{
script_id(132735);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/01");
script_cve_id(
"CVE-2019-16163",
"CVE-2019-19012",
"CVE-2019-19204",
"CVE-2019-19246"
);
script_xref(name:"ALAS", value:"2020-1380");
script_name(english:"Amazon Linux 2 : oniguruma (ALAS-2020-1380)");
script_set_attribute(attribute:"synopsis", value:
"The remote Amazon Linux 2 host is missing a security update.");
script_set_attribute(attribute:"description", value:
"Oniguruma before 6.9.3 allows Stack Exhaustion in regcomp.c because of
recursion in regparse.c. (CVE-2019-16163)
Oniguruma through 6.9.3, as used in PHP 7.3.x and other products, has
a heap-based buffer over-read in str_lower_case_match in
regexec.c.(CVE-2019-19246)");
script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/AL2/ALAS-2020-1380.html");
script_set_attribute(attribute:"solution", value:
"Run 'yum update oniguruma' to update your system.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-19012");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2019/09/09");
script_set_attribute(attribute:"patch_publication_date", value:"2020/01/08");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/01/09");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:oniguruma");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:oniguruma-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:oniguruma-devel");
script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux:2");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Amazon Linux Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/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 != "2")
{
if (os_ver == 'A') os_ver = 'AMI';
audit(AUDIT_OS_NOT, "Amazon Linux 2", "Amazon Linux " + os_ver);
}
if (!get_kb_item("Host/AmazonLinux/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
flag = 0;
if (rpm_check(release:"AL2", reference:"oniguruma-5.9.6-1.amzn2.0.3")) flag++;
if (rpm_check(release:"AL2", reference:"oniguruma-debuginfo-5.9.6-1.amzn2.0.3")) flag++;
if (rpm_check(release:"AL2", reference:"oniguruma-devel-5.9.6-1.amzn2.0.3")) flag++;
if (flag)
{
if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
else security_hole(0);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "oniguruma / oniguruma-debuginfo / oniguruma-devel");
}