7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.6 High
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
5.1%
The version of nginx installed on the remote host is prior to 1.22.1-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2NGINX1-2023-001 advisory.
NGINX Open Source before versions 1.23.2 and 1.22.1, NGINX Open Source Subscription before versions R2 P1 and R1 P1, and NGINX Plus before versions R27 P1 and R26 P1 have a vulnerability in the module ngx_http_mp4_module that might allow a local attacker to corrupt NGINX worker memory, resulting in its termination or potential other impact using a specially crafted audio or video file. The issue affects only NGINX products that are built with the ngx_http_mp4_module, when the mp4 directive is used in the configuration file. Further, the attack is possible only if an attacker can trigger processing of a specially crafted audio or video file with the module ngx_http_mp4_module. (CVE-2022-41741)
NGINX Open Source before versions 1.23.2 and 1.22.1, NGINX Open Source Subscription before versions R2 P1 and R1 P1, and NGINX Plus before versions R27 P1 and R26 P1 have a vulnerability in the module ngx_http_mp4_module that might allow a local attacker to cause a worker process crash, or might result in worker process memory disclosure by using a specially crafted audio or video file. The issue affects only NGINX products that are built with the module ngx_http_mp4_module, when the mp4 directive is used in the configuration file. Further, the attack is possible only if an attacker can trigger processing of a specially crafted audio or video file with the module ngx_http_mp4_module. (CVE-2022-41742)
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 2 Security Advisory ALASNGINX1-2023-001.
##
include('compat.inc');
if (description)
{
script_id(182011);
script_version("1.1");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/02");
script_cve_id("CVE-2022-41741", "CVE-2022-41742");
script_xref(name:"IAVA", value:"2022-A-0440-S");
script_name(english:"Amazon Linux 2 : nginx (ALASNGINX1-2023-001)");
script_set_attribute(attribute:"synopsis", value:
"The remote Amazon Linux 2 host is missing a security update.");
script_set_attribute(attribute:"description", value:
"The version of nginx installed on the remote host is prior to 1.22.1-1. It is, therefore, affected by multiple
vulnerabilities as referenced in the ALAS2NGINX1-2023-001 advisory.
- NGINX Open Source before versions 1.23.2 and 1.22.1, NGINX Open Source Subscription before versions R2 P1
and R1 P1, and NGINX Plus before versions R27 P1 and R26 P1 have a vulnerability in the module
ngx_http_mp4_module that might allow a local attacker to corrupt NGINX worker memory, resulting in its
termination or potential other impact using a specially crafted audio or video file. The issue affects
only NGINX products that are built with the ngx_http_mp4_module, when the mp4 directive is used in the
configuration file. Further, the attack is possible only if an attacker can trigger processing of a
specially crafted audio or video file with the module ngx_http_mp4_module. (CVE-2022-41741)
- NGINX Open Source before versions 1.23.2 and 1.22.1, NGINX Open Source Subscription before versions R2 P1
and R1 P1, and NGINX Plus before versions R27 P1 and R26 P1 have a vulnerability in the module
ngx_http_mp4_module that might allow a local attacker to cause a worker process crash, or might result in
worker process memory disclosure by using a specially crafted audio or video file. The issue affects only
NGINX products that are built with the module ngx_http_mp4_module, when the mp4 directive is used in the
configuration file. Further, the attack is possible only if an attacker can trigger processing of a
specially crafted audio or video file with the module ngx_http_mp4_module. (CVE-2022-41742)
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/AL2/ALASNGINX1-2023-001.html");
script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/cve/html/CVE-2022-41741.html");
script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/cve/html/CVE-2022-41742.html");
script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/faqs.html");
script_set_attribute(attribute:"solution", value:
"Run 'yum update nginx' to update your system.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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-2022-41741");
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:"2022/10/19");
script_set_attribute(attribute:"patch_publication_date", value:"2023/08/07");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/09/27");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nginx");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nginx-all-modules");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nginx-core");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nginx-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nginx-filesystem");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nginx-mod-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nginx-mod-http-geoip");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nginx-mod-http-image-filter");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nginx-mod-http-perl");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nginx-mod-http-xslt-filter");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nginx-mod-mail");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nginx-mod-stream");
script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux:2");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_set_attribute(attribute:"stig_severity", value:"II");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Amazon Linux Local Security Checks");
script_copyright(english:"This script is Copyright (C) 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 != "2")
{
if (os_ver == 'A') os_ver = 'AMI';
audit(AUDIT_OS_NOT, "Amazon Linux 2", "Amazon Linux " + os_ver);
}
if (!get_kb_item("Host/AmazonLinux/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
var pkgs = [
{'reference':'nginx-1.22.1-1.amzn2.0.2', 'cpu':'aarch64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'nginx1'},
{'reference':'nginx-1.22.1-1.amzn2.0.2', 'cpu':'x86_64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'nginx1'},
{'reference':'nginx-all-modules-1.22.1-1.amzn2.0.2', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'nginx1'},
{'reference':'nginx-core-1.22.1-1.amzn2.0.2', 'cpu':'aarch64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'nginx1'},
{'reference':'nginx-core-1.22.1-1.amzn2.0.2', 'cpu':'x86_64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'nginx1'},
{'reference':'nginx-debuginfo-1.22.1-1.amzn2.0.2', 'cpu':'aarch64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'nginx1'},
{'reference':'nginx-debuginfo-1.22.1-1.amzn2.0.2', 'cpu':'x86_64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'nginx1'},
{'reference':'nginx-filesystem-1.22.1-1.amzn2.0.2', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'nginx1'},
{'reference':'nginx-mod-devel-1.22.1-1.amzn2.0.2', 'cpu':'aarch64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'nginx1'},
{'reference':'nginx-mod-devel-1.22.1-1.amzn2.0.2', 'cpu':'x86_64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'nginx1'},
{'reference':'nginx-mod-http-geoip-1.22.1-1.amzn2.0.2', 'cpu':'aarch64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'nginx1'},
{'reference':'nginx-mod-http-geoip-1.22.1-1.amzn2.0.2', 'cpu':'x86_64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'nginx1'},
{'reference':'nginx-mod-http-image-filter-1.22.1-1.amzn2.0.2', 'cpu':'aarch64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'nginx1'},
{'reference':'nginx-mod-http-image-filter-1.22.1-1.amzn2.0.2', 'cpu':'x86_64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'nginx1'},
{'reference':'nginx-mod-http-perl-1.22.1-1.amzn2.0.2', 'cpu':'aarch64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'nginx1'},
{'reference':'nginx-mod-http-perl-1.22.1-1.amzn2.0.2', 'cpu':'x86_64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'nginx1'},
{'reference':'nginx-mod-http-xslt-filter-1.22.1-1.amzn2.0.2', 'cpu':'aarch64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'nginx1'},
{'reference':'nginx-mod-http-xslt-filter-1.22.1-1.amzn2.0.2', 'cpu':'x86_64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'nginx1'},
{'reference':'nginx-mod-mail-1.22.1-1.amzn2.0.2', 'cpu':'aarch64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'nginx1'},
{'reference':'nginx-mod-mail-1.22.1-1.amzn2.0.2', 'cpu':'x86_64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'nginx1'},
{'reference':'nginx-mod-stream-1.22.1-1.amzn2.0.2', 'cpu':'aarch64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'nginx1'},
{'reference':'nginx-mod-stream-1.22.1-1.amzn2.0.2', 'cpu':'x86_64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'nginx1'}
];
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, "nginx / nginx-all-modules / nginx-core / etc");
}
Vendor | Product | Version | CPE |
---|---|---|---|
amazon | linux | nginx | p-cpe:/a:amazon:linux:nginx |
amazon | linux | nginx-all-modules | p-cpe:/a:amazon:linux:nginx-all-modules |
amazon | linux | nginx-core | p-cpe:/a:amazon:linux:nginx-core |
amazon | linux | nginx-debuginfo | p-cpe:/a:amazon:linux:nginx-debuginfo |
amazon | linux | nginx-filesystem | p-cpe:/a:amazon:linux:nginx-filesystem |
amazon | linux | nginx-mod-devel | p-cpe:/a:amazon:linux:nginx-mod-devel |
amazon | linux | nginx-mod-http-geoip | p-cpe:/a:amazon:linux:nginx-mod-http-geoip |
amazon | linux | nginx-mod-http-image-filter | p-cpe:/a:amazon:linux:nginx-mod-http-image-filter |
amazon | linux | nginx-mod-http-perl | p-cpe:/a:amazon:linux:nginx-mod-http-perl |
amazon | linux | nginx-mod-http-xslt-filter | p-cpe:/a:amazon:linux:nginx-mod-http-xslt-filter |
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.6 High
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
5.1%