CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
87.6%
The remote Redhat Enterprise Linux 6 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.
w3m: Heap corruption due to integer overflow in renderTable() (CVE-2016-9426)
An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-31. The feed_table_tag function in w3m doesn’t properly validate the value of table span, which allows remote attackers to cause a denial of service (stack and/or heap buffer overflow) and possibly execute arbitrary code via a crafted HTML page.
(CVE-2016-9422)
An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-31. w3m doesn’t properly validate the value of tag attribute, which allows remote attackers to cause a denial of service (heap buffer overflow crash) and possibly execute arbitrary code via a crafted HTML page. (CVE-2016-9424)
Note that Nessus has not tested for these issues but has instead relied on the package manager’s report that the package is installed.
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory w3m. The text
# itself is copyright (C) Red Hat, Inc.
##
include('compat.inc');
if (description)
{
script_id(199853);
script_version("1.1");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/03");
script_cve_id(
"CVE-2016-9422",
"CVE-2016-9424",
"CVE-2016-9425",
"CVE-2016-9426",
"CVE-2016-9432",
"CVE-2016-9435",
"CVE-2016-9436",
"CVE-2016-9439",
"CVE-2016-9440",
"CVE-2016-9441",
"CVE-2016-9442",
"CVE-2016-9622",
"CVE-2016-9623",
"CVE-2016-9624",
"CVE-2016-9625",
"CVE-2016-9626",
"CVE-2016-9630",
"CVE-2018-6196",
"CVE-2018-6197",
"CVE-2018-6198"
);
script_name(english:"RHEL 6 : w3m (Unpatched Vulnerability)");
script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat 6 host is affected by multiple vulnerabilities that will not be patched.");
script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 6 host has one or more packages installed that are affected by multiple
vulnerabilities that have been acknowledged by the vendor but will not be patched.
- w3m: Heap corruption due to integer overflow in renderTable() (CVE-2016-9426)
- An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-31. The feed_table_tag function in
w3m doesn't properly validate the value of table span, which allows remote attackers to cause a denial of
service (stack and/or heap buffer overflow) and possibly execute arbitrary code via a crafted HTML page.
(CVE-2016-9422)
- An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-31. w3m doesn't properly validate
the value of tag attribute, which allows remote attackers to cause a denial of service (heap buffer
overflow crash) and possibly execute arbitrary code via a crafted HTML page. (CVE-2016-9424)
Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package
is installed.");
script_set_attribute(attribute:"solution", value:
"The vendor has acknowledged the vulnerabilities but no solution has been provided. Refer to the vendor for remediation
guidance.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:R/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-2016-9426");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vendor_unpatched", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2016/11/03");
script_set_attribute(attribute:"plugin_publication_date", value:"2024/06/03");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:6");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:w3m");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Red Hat Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl", "redhat_repos.nasl");
script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");
exit(0);
}
include('rpm.inc');
include('rhel.inc');
if (!get_kb_item("global_settings/vendor_unpatched"))
exit(0, "Unpatched Vulnerabilities Detection not active.");
if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/RedHat/release');
if (isnull(os_release) || 'Red Hat' >!< os_release) audit(AUDIT_OS_NOT, 'Red Hat');
var os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Red Hat');
os_ver = os_ver[1];
if (!rhel_check_release(operator: 'ge', os_version: os_ver, rhel_version: '6')) audit(AUDIT_OS_NOT, 'Red Hat 6.x', 'Red Hat ' + os_ver);
if (!get_kb_item('Host/RedHat/rpm-list')) 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 && 'ppc' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Red Hat', cpu);
var constraints = [
{
'pkgs': [
{'reference':'w3m', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'w3m'}
]
}
];
var flag = 0;
foreach var constraint_array ( constraints ) {
var repo_relative_urls = NULL;
var enterprise_linux_flag = rhel_repo_urls_has_content_dist_rhel(repo_urls:repo_relative_urls);
foreach var pkg ( constraint_array['pkgs'] ) {
var unpatched_pkg = NULL;
var _release = NULL;
var sp = NULL;
var el_string = NULL;
var rpm_spec_vers_cmp = NULL;
var exists_check = NULL;
var cves = NULL;
if (!empty_or_null(pkg['unpatched_pkg'])) unpatched_pkg = pkg['unpatched_pkg'];
if (!empty_or_null(pkg['release'])) _release = 'RHEL' + pkg['release'];
if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
if (unpatched_pkg &&
_release &&
(!exists_check || rpm_exists(release:_release, rpm:exists_check)) &&
unpatched_package_exists(release:_release, package:unpatched_pkg, cves: cves)) flag++;
}
}
if (flag)
{
var extra = NULL;
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : unpatched_packages_report()
);
exit(0);
}
else
{
var tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'w3m');
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9422
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9424
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9425
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9426
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9432
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9435
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9436
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9439
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9440
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9441
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9442
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9622
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9623
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9624
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9625
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9626
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9630
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6196
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6197
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6198
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
87.6%