CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:S/C:P/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
AI Score
Confidence
High
EPSS
Percentile
50.9%
It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2021-1630 advisory.
A Reflected Cross Site Scripting flaw was found in all pki-core 10.x.x versions module from the pki-core server due to the CA Agent Service not properly sanitizing the certificate request page. An attacker could inject a specially crafted value that will be executed on the victim’s browser. (CVE-2019-10146)
A vulnerability was found in all pki-core 10.x.x versions, where the Key Recovery Authority (KRA) Agent Service did not properly sanitize recovery request search page, enabling a Reflected Cross Site Scripting (XSS) vulnerability. An attacker could trick an authenticated victim into executing specially crafted Javascript code. (CVE-2019-10179)
A Reflected Cross Site Scripting vulnerability was found in all pki-core 10.x.x versions, where the pki-ca module from the pki-core server. This flaw is caused by missing sanitization of the GET URL parameters. An attacker could abuse this flaw to trick an authenticated user into clicking a specially crafted link which can execute arbitrary code when viewed in a browser. (CVE-2019-10221)
A flaw was found in pki-core. An attacker who has successfully compromised a key could use this flaw to renew the corresponding certificate over and over again, as long as it is not explicitly revoked. The highest threat from this vulnerability is to data confidentiality and integrity. (CVE-2021-20179)
Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
##
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux 2 Security Advisory ALAS-2021-1630.
##
include('compat.inc');
if (description)
{
script_id(148922);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/03");
script_cve_id(
"CVE-2019-10146",
"CVE-2019-10179",
"CVE-2019-10221",
"CVE-2020-1721",
"CVE-2020-25715",
"CVE-2021-20179"
);
script_xref(name:"ALAS", value:"2021-1630");
script_name(english:"Amazon Linux 2 : pki-core (ALAS-2021-1630)");
script_set_attribute(attribute:"synopsis", value:
"The remote Amazon Linux 2 host is missing a security update.");
script_set_attribute(attribute:"description", value:
"It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2021-1630 advisory.
- A Reflected Cross Site Scripting flaw was found in all pki-core 10.x.x versions module from the pki-core
server due to the CA Agent Service not properly sanitizing the certificate request page. An attacker could
inject a specially crafted value that will be executed on the victim's browser. (CVE-2019-10146)
- A vulnerability was found in all pki-core 10.x.x versions, where the Key Recovery Authority (KRA) Agent
Service did not properly sanitize recovery request search page, enabling a Reflected Cross Site Scripting
(XSS) vulnerability. An attacker could trick an authenticated victim into executing specially crafted
Javascript code. (CVE-2019-10179)
- A Reflected Cross Site Scripting vulnerability was found in all pki-core 10.x.x versions, where the pki-ca
module from the pki-core server. This flaw is caused by missing sanitization of the GET URL parameters. An
attacker could abuse this flaw to trick an authenticated user into clicking a specially crafted link which
can execute arbitrary code when viewed in a browser. (CVE-2019-10221)
- A flaw was found in pki-core. An attacker who has successfully compromised a key could use this flaw to
renew the corresponding certificate over and over again, as long as it is not explicitly revoked. The
highest threat from this vulnerability is to data confidentiality and integrity. (CVE-2021-20179)
Note that Nessus has not tested for this issue 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/ALAS-2021-1630.html");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2019-10146");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2019-10179");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2019-10221");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2020-1721");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2020-25715");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-20179");
script_set_attribute(attribute:"solution", value:
"Run 'yum update pki-core' to update your system.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:N");
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:L/UI:N/S:U/C:H/I:H/A:N");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-20179");
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:"2020/03/18");
script_set_attribute(attribute:"patch_publication_date", value:"2021/04/20");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/04/22");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:pki-base");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:pki-base-java");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:pki-ca");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:pki-core-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:pki-javadoc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:pki-kra");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:pki-server");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:pki-symkey");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:pki-tools");
script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux:2");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Amazon Linux Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2021-2024 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("audit.inc");
include("global_settings.inc");
include("rpm.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/AmazonLinux/release");
if (isnull(release) || !strlen(release)) audit(AUDIT_OS_NOT, "Amazon Linux");
os_ver = pregmatch(pattern: "^AL(A|\d)", string: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);
pkgs = [
{'reference':'pki-base-10.5.18-12.amzn2.0.1', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE},
{'reference':'pki-base-java-10.5.18-12.amzn2.0.1', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE},
{'reference':'pki-ca-10.5.18-12.amzn2.0.1', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE},
{'reference':'pki-core-debuginfo-10.5.18-12.amzn2.0.1', 'cpu':'aarch64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE},
{'reference':'pki-core-debuginfo-10.5.18-12.amzn2.0.1', 'cpu':'i686', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE},
{'reference':'pki-core-debuginfo-10.5.18-12.amzn2.0.1', 'cpu':'x86_64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE},
{'reference':'pki-javadoc-10.5.18-12.amzn2.0.1', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE},
{'reference':'pki-kra-10.5.18-12.amzn2.0.1', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE},
{'reference':'pki-server-10.5.18-12.amzn2.0.1', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE},
{'reference':'pki-symkey-10.5.18-12.amzn2.0.1', 'cpu':'aarch64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE},
{'reference':'pki-symkey-10.5.18-12.amzn2.0.1', 'cpu':'i686', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE},
{'reference':'pki-symkey-10.5.18-12.amzn2.0.1', 'cpu':'x86_64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE},
{'reference':'pki-tools-10.5.18-12.amzn2.0.1', 'cpu':'aarch64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE},
{'reference':'pki-tools-10.5.18-12.amzn2.0.1', 'cpu':'i686', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE},
{'reference':'pki-tools-10.5.18-12.amzn2.0.1', 'cpu':'x86_64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE}
];
flag = 0;
foreach package_array ( pkgs ) {
reference = NULL;
release = NULL;
cpu = NULL;
el_string = NULL;
rpm_spec_vers_cmp = NULL;
allowmaj = 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['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['allowmaj'])) allowmaj = package_array['allowmaj'];
if (reference && release) {
if (rpm_check(release:release, cpu:cpu, reference:reference, 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
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "pki-base / pki-base-java / pki-ca / etc");
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-10146
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-10179
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-10221
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-1721
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25715
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20179
access.redhat.com/security/cve/CVE-2019-10146
access.redhat.com/security/cve/CVE-2019-10179
access.redhat.com/security/cve/CVE-2019-10221
access.redhat.com/security/cve/CVE-2020-1721
access.redhat.com/security/cve/CVE-2020-25715
access.redhat.com/security/cve/CVE-2021-20179
alas.aws.amazon.com/AL2/ALAS-2021-1630.html
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:S/C:P/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
AI Score
Confidence
High
EPSS
Percentile
50.9%