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.
busybox: heap-based buffer overflow in OPTION_6RD parsing (CVE-2016-2148)
Integer overflow in the DHCP client (udhcpc) in BusyBox before 1.25.0 allows remote attackers to cause a denial of service (crash) via a malformed RFC1035-encoded domain name, which triggers an out-of-bounds heap write. (CVE-2016-2147)
The recv_and_process_client_pkt function in networking/ntpd.c in busybox allows remote attackers to cause a denial of service (CPU and bandwidth consumption) via a forged NTP packet, which triggers a communication loop. (CVE-2016-6301)
The get_next_block function in archival/libarchive/decompress_bunzip2.c in BusyBox 1.27.2 has an Integer Overflow that may lead to a write access violation. (CVE-2017-15873)
archival/libarchive/decompress_unlzma.c in BusyBox 1.27.2 has an Integer Underflow that leads to a read access violation. (CVE-2017-15874)
In the add_match function in libbb/lineedit.c in BusyBox through 1.27.2, the tab autocomplete feature of the shell, used to get a list of filenames in a directory, does not sanitize filenames and results in executing any escape sequence in the terminal. This could potentially result in code execution, arbitrary file writes, or other attacks. (CVE-2017-16544)
A use-after-free in Busybox 1.35-x’s awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in the copyvar function. (CVE-2022-30065)
A use-after-free vulnerability was discovered in xasprintf function in xfuncs_printf.c:344 in BusyBox v.1.36.1. (CVE-2023-42363)
A use-after-free vulnerability in BusyBox v.1.36.1 allows attackers to cause a denial of service via a crafted awk pattern in the awk.c evaluate function. (CVE-2023-42364)
A use-after-free vulnerability was discovered in BusyBox v.1.36.1 via a crafted awk pattern in the awk.c copyvar function. (CVE-2023-42365)
A heap-buffer-overflow was discovered in BusyBox v.1.36.1 in the next_token function at awk.c:1159.
(CVE-2023-42366)
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 busybox. The text
# itself is copyright (C) Red Hat, Inc.
##
include('compat.inc');
if (description)
{
script_id(195590);
script_version("1.0");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/05/11");
script_cve_id(
"CVE-2016-2147",
"CVE-2016-2148",
"CVE-2016-6301",
"CVE-2017-15873",
"CVE-2017-15874",
"CVE-2017-16544",
"CVE-2022-30065",
"CVE-2023-42363",
"CVE-2023-42364",
"CVE-2023-42365",
"CVE-2023-42366"
);
script_name(english:"RHEL 6 : busybox (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.
- busybox: heap-based buffer overflow in OPTION_6RD parsing (CVE-2016-2148)
- Integer overflow in the DHCP client (udhcpc) in BusyBox before 1.25.0 allows remote attackers to cause a
denial of service (crash) via a malformed RFC1035-encoded domain name, which triggers an out-of-bounds
heap write. (CVE-2016-2147)
- The recv_and_process_client_pkt function in networking/ntpd.c in busybox allows remote attackers to cause
a denial of service (CPU and bandwidth consumption) via a forged NTP packet, which triggers a
communication loop. (CVE-2016-6301)
- The get_next_block function in archival/libarchive/decompress_bunzip2.c in BusyBox 1.27.2 has an Integer
Overflow that may lead to a write access violation. (CVE-2017-15873)
- archival/libarchive/decompress_unlzma.c in BusyBox 1.27.2 has an Integer Underflow that leads to a read
access violation. (CVE-2017-15874)
- In the add_match function in libbb/lineedit.c in BusyBox through 1.27.2, the tab autocomplete feature of
the shell, used to get a list of filenames in a directory, does not sanitize filenames and results in
executing any escape sequence in the terminal. This could potentially result in code execution, arbitrary
file writes, or other attacks. (CVE-2017-16544)
- A use-after-free in Busybox 1.35-x's awk applet leads to denial of service and possibly code execution
when processing a crafted awk pattern in the copyvar function. (CVE-2022-30065)
- A use-after-free vulnerability was discovered in xasprintf function in xfuncs_printf.c:344 in BusyBox
v.1.36.1. (CVE-2023-42363)
- A use-after-free vulnerability in BusyBox v.1.36.1 allows attackers to cause a denial of service via a
crafted awk pattern in the awk.c evaluate function. (CVE-2023-42364)
- A use-after-free vulnerability was discovered in BusyBox v.1.36.1 via a crafted awk pattern in the awk.c
copyvar function. (CVE-2023-42365)
- A heap-buffer-overflow was discovered in BusyBox v.1.36.1 in the next_token function at awk.c:1159.
(CVE-2023-42366)
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: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-2016-2148");
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:"2016/08/03");
script_set_attribute(attribute:"plugin_publication_date", value:"2024/05/11");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:5");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:6");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:busybox");
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':'busybox', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'busybox'}
]
}
];
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_HOLE,
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, 'busybox');
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2147
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2148
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6301
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15873
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15874
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16544
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-30065
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-42363
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-42364
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-42365
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-42366