The version of ncurses installed on the remote host is prior to 6.2-4.20200222. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2022-2022-217 advisory.
An issue was discovered in ncurses through v6.2-1. _nc_captoinfo in captoinfo.c has a heap-based buffer overflow. (CVE-2021-39537)
ncurses 6.3 before patch 20220416 has an out-of-bounds read and segmentation violation in convert_strings in tinfo/read_entry.c in the terminfo library. (CVE-2022-29458)
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 Amazon Linux 2022 Security Advisory ALAS2022-2022-217.
##
include('compat.inc');
if (description)
{
script_id(168553);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/09/20");
script_cve_id("CVE-2021-39537", "CVE-2022-29458");
script_name(english:"Amazon Linux 2022 : ncurses (ALAS2022-2022-217)");
script_set_attribute(attribute:"synopsis", value:
"The remote Amazon Linux 2022 host is missing a security update.");
script_set_attribute(attribute:"description", value:
"The version of ncurses installed on the remote host is prior to 6.2-4.20200222. It is, therefore, affected by multiple
vulnerabilities as referenced in the ALAS2022-2022-217 advisory.
- An issue was discovered in ncurses through v6.2-1. _nc_captoinfo in captoinfo.c has a heap-based buffer
overflow. (CVE-2021-39537)
- ncurses 6.3 before patch 20220416 has an out-of-bounds read and segmentation violation in convert_strings
in tinfo/read_entry.c in the terminfo library. (CVE-2022-29458)
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://alas.aws.amazon.com/AL2022/ALAS-2022-217.html");
script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/cve/html/CVE-2021-39537.html");
script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/cve/html/CVE-2022-29458.html");
script_set_attribute(attribute:"solution", value:
"Run 'yum update ncurses' to update your system.");
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-2021-39537");
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:"2021/09/20");
script_set_attribute(attribute:"patch_publication_date", value:"2022/12/06");
script_set_attribute(attribute:"plugin_publication_date", value:"2022/12/09");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ncurses");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ncurses-base");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ncurses-c++-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ncurses-c++-libs-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ncurses-compat-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ncurses-compat-libs-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ncurses-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ncurses-debugsource");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ncurses-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ncurses-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ncurses-libs-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ncurses-static");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ncurses-term");
script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux:2022");
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) 2022-2023 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("rpm.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var alas_release = get_kb_item("Host/AmazonLinux/release");
if (isnull(alas_release) || !strlen(alas_release)) audit(AUDIT_OS_NOT, "Amazon Linux");
var os_ver = pregmatch(pattern: "^AL(A|\d+|-\d+)", string:alas_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
os_ver = os_ver[1];
if (os_ver != "-2022")
{
if (os_ver == 'A') os_ver = 'AMI';
audit(AUDIT_OS_NOT, "Amazon Linux 2022", "Amazon Linux " + os_ver);
}
if (!get_kb_item("Host/AmazonLinux/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
var pkgs = [
{'reference':'ncurses-6.2-4.20200222.amzn2022.0.2', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-6.2-4.20200222.amzn2022.0.2', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-6.2-4.20200222.amzn2022.0.2', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-base-6.2-4.20200222.amzn2022.0.2', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-c++-libs-6.2-4.20200222.amzn2022.0.2', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-c++-libs-6.2-4.20200222.amzn2022.0.2', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-c++-libs-6.2-4.20200222.amzn2022.0.2', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-c++-libs-debuginfo-6.2-4.20200222.amzn2022.0.2', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-c++-libs-debuginfo-6.2-4.20200222.amzn2022.0.2', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-c++-libs-debuginfo-6.2-4.20200222.amzn2022.0.2', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-compat-libs-6.2-4.20200222.amzn2022.0.2', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-compat-libs-6.2-4.20200222.amzn2022.0.2', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-compat-libs-6.2-4.20200222.amzn2022.0.2', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-compat-libs-debuginfo-6.2-4.20200222.amzn2022.0.2', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-compat-libs-debuginfo-6.2-4.20200222.amzn2022.0.2', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-compat-libs-debuginfo-6.2-4.20200222.amzn2022.0.2', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-debuginfo-6.2-4.20200222.amzn2022.0.2', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-debuginfo-6.2-4.20200222.amzn2022.0.2', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-debuginfo-6.2-4.20200222.amzn2022.0.2', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-debugsource-6.2-4.20200222.amzn2022.0.2', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-debugsource-6.2-4.20200222.amzn2022.0.2', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-debugsource-6.2-4.20200222.amzn2022.0.2', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-devel-6.2-4.20200222.amzn2022.0.2', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-devel-6.2-4.20200222.amzn2022.0.2', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-devel-6.2-4.20200222.amzn2022.0.2', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-libs-6.2-4.20200222.amzn2022.0.2', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-libs-6.2-4.20200222.amzn2022.0.2', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-libs-6.2-4.20200222.amzn2022.0.2', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-libs-debuginfo-6.2-4.20200222.amzn2022.0.2', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-libs-debuginfo-6.2-4.20200222.amzn2022.0.2', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-libs-debuginfo-6.2-4.20200222.amzn2022.0.2', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-static-6.2-4.20200222.amzn2022.0.2', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-static-6.2-4.20200222.amzn2022.0.2', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-static-6.2-4.20200222.amzn2022.0.2', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ncurses-term-6.2-4.20200222.amzn2022.0.2', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE}
];
var flag = 0;
foreach var package_array ( pkgs ) {
var reference = NULL;
var _release = NULL;
var sp = NULL;
var _cpu = NULL;
var el_string = NULL;
var rpm_spec_vers_cmp = NULL;
var epoch = NULL;
var allowmaj = NULL;
var exists_check = NULL;
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (!empty_or_null(package_array['release'])) _release = package_array['release'];
if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
if (!empty_or_null(package_array['cpu'])) _cpu = package_array['cpu'];
if (!empty_or_null(package_array['el_string'])) el_string = package_array['el_string'];
if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
if (reference && _release && (!exists_check || rpm_exists(release:_release, rpm:exists_check))) {
if (rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
}
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : rpm_report_get()
);
exit(0);
}
else
{
var tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "ncurses / ncurses-base / ncurses-c++-libs / etc");
}