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.
gcc: Exploitable buffer overflow (CVE-2016-2226)
Use-after-free vulnerability in libiberty allows remote attackers to cause a denial of service (segmentation fault and crash) via a crafted binary, related to btypevec. (CVE-2016-4487)
Use-after-free vulnerability in libiberty allows remote attackers to cause a denial of service (segmentation fault and crash) via a crafted binary, related to ktypevec. (CVE-2016-4488)
Integer overflow in the gnu_special function in libiberty allows remote attackers to cause a denial of service (segmentation fault and crash) via a crafted binary, related to the demangling of virtual tables. (CVE-2016-4489)
Integer overflow in cp-demangle.c in libiberty allows remote attackers to cause a denial of service (segmentation fault and crash) via a crafted binary, related to inconsistent use of the long and int types for lengths. (CVE-2016-4490)
The d_print_comp function in cp-demangle.c in libiberty allows remote attackers to cause a denial of service (segmentation fault and crash) via a crafted binary, which triggers infinite recursion and a buffer overflow, related to a node having itself as ancestor more than once. (CVE-2016-4491)
Buffer overflow in the do_type function in cplus-dem.c in libiberty allows remote attackers to cause a denial of service (segmentation fault and crash) via a crafted binary. (CVE-2016-4492)
The demangle_template_value_parm and do_hpacc_template_literal functions in cplus-dem.c in libiberty allow remote attackers to cause a denial of service (out-of-bounds read and crash) via a crafted binary.
(CVE-2016-4493)
GCC v12.0 was discovered to contain an uncontrolled recursion via the component libiberty/rust-demangle.c.
This vulnerability allows attackers to cause a Denial of Service (DoS) by consuming excessive CPU and memory resources. (CVE-2021-46195)
DISPUTEDA failure in the -fstack-protector feature in GCC-based toolchains that target AArch64 allows an attacker to exploit an existing buffer overflow in dynamically-sized local variables in your application without this being detected. This stack-protector failure only applies to C99-style dynamically-sized local variables or those created using alloca(). The stack-protector operates as intended for statically-sized local variables. The default behavior when the stack-protector detects an overflow is to terminate your application, resulting in controlled loss of availability. An attacker who can exploit a buffer overflow without triggering the stack-protector might be able to change program flow control to cause an uncontrolled loss of availability or to go further and affect confidentiality or integrity. NOTE: The GCC project argues that this is a missed hardening bug and not a vulnerability by itself. (CVE-2023-4039)
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 gcc. The text
# itself is copyright (C) Red Hat, Inc.
##
include('compat.inc');
if (description)
{
script_id(196842);
script_version("1.0");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/05/11");
script_cve_id(
"CVE-2016-2226",
"CVE-2016-4487",
"CVE-2016-4488",
"CVE-2016-4489",
"CVE-2016-4490",
"CVE-2016-4491",
"CVE-2016-4492",
"CVE-2016-4493",
"CVE-2021-46195",
"CVE-2023-4039"
);
script_name(english:"RHEL 6 : gcc (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.
- gcc: Exploitable buffer overflow (CVE-2016-2226)
- Use-after-free vulnerability in libiberty allows remote attackers to cause a denial of service
(segmentation fault and crash) via a crafted binary, related to btypevec. (CVE-2016-4487)
- Use-after-free vulnerability in libiberty allows remote attackers to cause a denial of service
(segmentation fault and crash) via a crafted binary, related to ktypevec. (CVE-2016-4488)
- Integer overflow in the gnu_special function in libiberty allows remote attackers to cause a denial of
service (segmentation fault and crash) via a crafted binary, related to the demangling of virtual
tables. (CVE-2016-4489)
- Integer overflow in cp-demangle.c in libiberty allows remote attackers to cause a denial of service
(segmentation fault and crash) via a crafted binary, related to inconsistent use of the long and int types
for lengths. (CVE-2016-4490)
- The d_print_comp function in cp-demangle.c in libiberty allows remote attackers to cause a denial of
service (segmentation fault and crash) via a crafted binary, which triggers infinite recursion and a
buffer overflow, related to a node having itself as ancestor more than once. (CVE-2016-4491)
- Buffer overflow in the do_type function in cplus-dem.c in libiberty allows remote attackers to cause a
denial of service (segmentation fault and crash) via a crafted binary. (CVE-2016-4492)
- The demangle_template_value_parm and do_hpacc_template_literal functions in cplus-dem.c in libiberty allow
remote attackers to cause a denial of service (out-of-bounds read and crash) via a crafted binary.
(CVE-2016-4493)
- GCC v12.0 was discovered to contain an uncontrolled recursion via the component libiberty/rust-demangle.c.
This vulnerability allows attackers to cause a Denial of Service (DoS) by consuming excessive CPU and
memory resources. (CVE-2021-46195)
- **DISPUTED**A failure in the -fstack-protector feature in GCC-based toolchains that target AArch64 allows
an attacker to exploit an existing buffer overflow in dynamically-sized local variables in your
application without this being detected. This stack-protector failure only applies to C99-style
dynamically-sized local variables or those created using alloca(). The stack-protector operates as
intended for statically-sized local variables. The default behavior when the stack-protector detects an
overflow is to terminate your application, resulting in controlled loss of availability. An attacker who
can exploit a buffer overflow without triggering the stack-protector might be able to change program flow
control to cause an uncontrolled loss of availability or to go further and affect confidentiality or
integrity. NOTE: The GCC project argues that this is a missed hardening bug and not a vulnerability by
itself. (CVE-2023-4039)
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:L/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-2016-2226");
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:"2016/05/02");
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:binutils");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:binutils220");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:compat-gcc-295");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:compat-gcc-296");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:compat-gcc-32");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:compat-gcc-34");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:compat-gcc-44");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:gcc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:gcc44");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:gdb");
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':'binutils', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'binutils', 'cves':['CVE-2016-2226', 'CVE-2016-4487', 'CVE-2016-4488', 'CVE-2016-4489', 'CVE-2016-4490', 'CVE-2016-4491', 'CVE-2016-4492', 'CVE-2016-4493']},
{'reference':'compat-gcc-295', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'compat-gcc-295'},
{'reference':'compat-gcc-296', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'compat-gcc-296'},
{'reference':'compat-gcc-32', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'compat-gcc-32'},
{'reference':'compat-gcc-34', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'compat-gcc-34'},
{'reference':'gcc', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'gcc', 'cves':['CVE-2016-2226', 'CVE-2016-4487', 'CVE-2016-4488', 'CVE-2016-4489', 'CVE-2016-4490', 'CVE-2016-4491', 'CVE-2016-4492', 'CVE-2021-46195', 'CVE-2023-4039']},
{'reference':'gdb', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'gdb', 'cves':['CVE-2016-2226', 'CVE-2016-4487', 'CVE-2016-4488', 'CVE-2016-4489', 'CVE-2016-4490', 'CVE-2016-4491', 'CVE-2016-4492', 'CVE-2016-4493']}
]
}
];
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, 'binutils / compat-gcc-295 / compat-gcc-296 / compat-gcc-32 / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
redhat | enterprise_linux | 5 | cpe:/o:redhat:enterprise_linux:5 |
redhat | enterprise_linux | 6 | cpe:/o:redhat:enterprise_linux:6 |
redhat | enterprise_linux | 7 | cpe:/o:redhat:enterprise_linux:7 |
redhat | enterprise_linux | binutils | p-cpe:/a:redhat:enterprise_linux:binutils |
redhat | enterprise_linux | binutils220 | p-cpe:/a:redhat:enterprise_linux:binutils220 |
redhat | enterprise_linux | compat-gcc-295 | p-cpe:/a:redhat:enterprise_linux:compat-gcc-295 |
redhat | enterprise_linux | compat-gcc-296 | p-cpe:/a:redhat:enterprise_linux:compat-gcc-296 |
redhat | enterprise_linux | compat-gcc-32 | p-cpe:/a:redhat:enterprise_linux:compat-gcc-32 |
redhat | enterprise_linux | compat-gcc-34 | p-cpe:/a:redhat:enterprise_linux:compat-gcc-34 |
redhat | enterprise_linux | compat-gcc-44 | p-cpe:/a:redhat:enterprise_linux:compat-gcc-44 |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2226
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4487
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4488
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4489
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4490
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4491
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4492
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4493
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-46195
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-4039