The remote Ubuntu 16.04 ESM host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5665-1 advisory.
The compile_bracket_matchingpath function in pcre_jit_compile.c in PCRE through 8.x before revision 1680 (e.g., the PHP 7.1.1 bundled version) allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via a crafted regular expression. (CVE-2017-6004)
libpcre1 in PCRE 8.40 and libpcre2 in PCRE2 10.23 allow remote attackers to cause a denial of service (segmentation violation for read access, and application crash) by triggering an invalid Unicode property lookup. (CVE-2017-7186)
Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-5665-1. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##
include('compat.inc');
if (description)
{
script_id(166014);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/07/10");
script_cve_id("CVE-2017-6004", "CVE-2017-7186");
script_xref(name:"USN", value:"5665-1");
script_name(english:"Ubuntu 16.04 ESM : PCRE vulnerabilities (USN-5665-1)");
script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"The remote Ubuntu 16.04 ESM host has packages installed that are affected by multiple vulnerabilities as referenced in
the USN-5665-1 advisory.
- The compile_bracket_matchingpath function in pcre_jit_compile.c in PCRE through 8.x before revision 1680
(e.g., the PHP 7.1.1 bundled version) allows remote attackers to cause a denial of service (out-of-bounds
read and application crash) via a crafted regular expression. (CVE-2017-6004)
- libpcre1 in PCRE 8.40 and libpcre2 in PCRE2 10.23 allow remote attackers to cause a denial of service
(segmentation violation for read access, and application crash) by triggering an invalid Unicode property
lookup. (CVE-2017-7186)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/notices/USN-5665-1");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-7186");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"vuln_publication_date", value:"2017/02/16");
script_set_attribute(attribute:"patch_publication_date", value:"2022/10/10");
script_set_attribute(attribute:"plugin_publication_date", value:"2022/10/11");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:esm");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpcre16-3");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpcre3");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpcre3-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpcre32-3");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpcrecpp0v5");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:pcregrep");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Ubuntu Local Security Checks");
script_copyright(english:"Ubuntu Security Notice (C) 2022-2023 Canonical, Inc. / NASL script (C) 2022-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");
exit(0);
}
include('debian_package.inc');
if ( ! get_kb_item('Host/local_checks_enabled') ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('16.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 16.04', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) audit(AUDIT_PACKAGE_LIST_MISSING);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);
var pkgs = [
{'osver': '16.04', 'pkgname': 'libpcre16-3', 'pkgver': '2:8.38-3.1ubuntu0.1~esm2'},
{'osver': '16.04', 'pkgname': 'libpcre3', 'pkgver': '2:8.38-3.1ubuntu0.1~esm2'},
{'osver': '16.04', 'pkgname': 'libpcre3-dev', 'pkgver': '2:8.38-3.1ubuntu0.1~esm2'},
{'osver': '16.04', 'pkgname': 'libpcre32-3', 'pkgver': '2:8.38-3.1ubuntu0.1~esm2'},
{'osver': '16.04', 'pkgname': 'libpcrecpp0v5', 'pkgver': '2:8.38-3.1ubuntu0.1~esm2'},
{'osver': '16.04', 'pkgname': 'pcregrep', 'pkgver': '2:8.38-3.1ubuntu0.1~esm2'}
];
var flag = 0;
foreach package_array ( pkgs ) {
var osver = NULL;
var pkgname = NULL;
var pkgver = NULL;
if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];
if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];
if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];
if (osver && pkgname && pkgver) {
if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) flag++;
}
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : ubuntu_report_get()
);
exit(0);
}
else
{
var tested = ubuntu_pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'libpcre16-3 / libpcre3 / libpcre3-dev / libpcre32-3 / libpcrecpp0v5 / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
canonical | ubuntu_linux | 16.04 | cpe:/o:canonical:ubuntu_linux:16.04:-:esm |
canonical | ubuntu_linux | libpcre16-3 | p-cpe:/a:canonical:ubuntu_linux:libpcre16-3 |
canonical | ubuntu_linux | libpcre3 | p-cpe:/a:canonical:ubuntu_linux:libpcre3 |
canonical | ubuntu_linux | libpcre3-dev | p-cpe:/a:canonical:ubuntu_linux:libpcre3-dev |
canonical | ubuntu_linux | libpcre32-3 | p-cpe:/a:canonical:ubuntu_linux:libpcre32-3 |
canonical | ubuntu_linux | libpcrecpp0v5 | p-cpe:/a:canonical:ubuntu_linux:libpcrecpp0v5 |
canonical | ubuntu_linux | pcregrep | p-cpe:/a:canonical:ubuntu_linux:pcregrep |