CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
99.9%
According to the versions of the tomcat packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :
When using the Apache JServ Protocol (AJP), care must be taken when trusting incoming connections to Apache Tomcat. Tomcat treats AJP connections as having higher trust than, for example, a similar HTTP connection. If such connections are available to an attacker, they can be exploited in ways that may be surprising. In Apache Tomcat 9.0.0.M1 to 9.0.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99, Tomcat shipped with an AJP Connector enabled by default that listened on all configured IP addresses. It was expected (and recommended in the security guide) that this Connector would be disabled if not required. This vulnerability report identified a mechanism that allowed: - returning arbitrary files from anywhere in the web application - processing any file in the web application as a JSP Further, if the web application allowed file upload and stored those files within the web application (or the attacker was able to control the content of the web application by some other means) then this, along with the ability to process a file as a JSP, made remote code execution possible. It is important to note that mitigation is only required if an AJP port is accessible to untrusted users. Users wishing to take a defence-in-depth approach and block the vector that permits returning arbitrary files and execution as JSP may upgrade to Apache Tomcat 9.0.31, 8.5.51 or 7.0.100 or later. A number of changes were made to the default AJP Connector configuration in 9.0.31 to harden the default configuration. It is likely that users upgrading to 9.0.31, 8.5.51 or 7.0.100 or later will need to make small changes to their configurations.(CVE-2020-1938)
When Apache Tomcat 9.0.0.M1 to 9.0.28, 8.5.0 to 8.5.47, 7.0.0 and 7.0.97 is configured with the JMX Remote Lifecycle Listener, a local attacker without access to the Tomcat process or configuration files is able to manipulate the RMI registry to perform a man-in-the-middle attack to capture user names and passwords used to access the JMX interface. The attacker can then use these credentials to access the JMX interface and gain complete control over the Tomcat instance.(CVE-2019-12418)
When using FORM authentication with Apache Tomcat 9.0.0.M1 to 9.0.29, 8.5.0 to 8.5.49 and 7.0.0 to 7.0.98 there was a narrow window where an attacker could perform a session fixation attack. The window was considered too narrow for an exploit to be practical but, erring on the side of caution, this issue has been treated as a security vulnerability.(CVE-2019-17563)
Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(135567);
script_version("1.10");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/01/11");
script_cve_id("CVE-2019-12418", "CVE-2019-17563", "CVE-2020-1938");
script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/03/17");
script_xref(name:"CEA-ID", value:"CEA-2021-0004");
script_xref(name:"CEA-ID", value:"CEA-2020-0021");
script_name(english:"EulerOS 2.0 SP3 : tomcat (EulerOS-SA-2020-1438)");
script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS host is missing multiple security updates.");
script_set_attribute(attribute:"description", value:
"According to the versions of the tomcat packages installed, the
EulerOS installation on the remote host is affected by the following
vulnerabilities :
- When using the Apache JServ Protocol (AJP), care must
be taken when trusting incoming connections to Apache
Tomcat. Tomcat treats AJP connections as having higher
trust than, for example, a similar HTTP connection. If
such connections are available to an attacker, they can
be exploited in ways that may be surprising. In Apache
Tomcat 9.0.0.M1 to 9.0.0.30, 8.5.0 to 8.5.50 and 7.0.0
to 7.0.99, Tomcat shipped with an AJP Connector enabled
by default that listened on all configured IP
addresses. It was expected (and recommended in the
security guide) that this Connector would be disabled
if not required. This vulnerability report identified a
mechanism that allowed: - returning arbitrary files
from anywhere in the web application - processing any
file in the web application as a JSP Further, if the
web application allowed file upload and stored those
files within the web application (or the attacker was
able to control the content of the web application by
some other means) then this, along with the ability to
process a file as a JSP, made remote code execution
possible. It is important to note that mitigation is
only required if an AJP port is accessible to untrusted
users. Users wishing to take a defence-in-depth
approach and block the vector that permits returning
arbitrary files and execution as JSP may upgrade to
Apache Tomcat 9.0.31, 8.5.51 or 7.0.100 or later. A
number of changes were made to the default AJP
Connector configuration in 9.0.31 to harden the default
configuration. It is likely that users upgrading to
9.0.31, 8.5.51 or 7.0.100 or later will need to make
small changes to their configurations.(CVE-2020-1938)
- When Apache Tomcat 9.0.0.M1 to 9.0.28, 8.5.0 to 8.5.47,
7.0.0 and 7.0.97 is configured with the JMX Remote
Lifecycle Listener, a local attacker without access to
the Tomcat process or configuration files is able to
manipulate the RMI registry to perform a
man-in-the-middle attack to capture user names and
passwords used to access the JMX interface. The
attacker can then use these credentials to access the
JMX interface and gain complete control over the Tomcat
instance.(CVE-2019-12418)
- When using FORM authentication with Apache Tomcat
9.0.0.M1 to 9.0.29, 8.5.0 to 8.5.49 and 7.0.0 to 7.0.98
there was a narrow window where an attacker could
perform a session fixation attack. The window was
considered too narrow for an exploit to be practical
but, erring on the side of caution, this issue has been
treated as a security vulnerability.(CVE-2019-17563)
Note that Tenable Network Security has extracted the preceding
description block directly from the EulerOS security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.");
# https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2020-1438
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?59d11dcf");
script_set_attribute(attribute:"solution", value:
"Update the affected tomcat packages.");
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:H/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:H/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-1938");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"exploited_by_malware", value:"true");
script_set_attribute(attribute:"patch_publication_date", value:"2020/04/16");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/04/15");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:tomcat");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:tomcat-admin-webapps");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:tomcat-el-2.2-api");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:tomcat-jsp-2.2-api");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:tomcat-lib");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:tomcat-servlet-3.0-api");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:tomcat-webapps");
script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Huawei Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2020-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/sp");
script_exclude_keys("Host/EulerOS/uvp_version");
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/EulerOS/release");
if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
if (release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0");
sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(3)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP3");
uvp = get_kb_item("Host/EulerOS/uvp_version");
if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP3", "EulerOS UVP " + uvp);
if (!get_kb_item("Host/EulerOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);
flag = 0;
pkgs = ["tomcat-7.0.76-8.h8",
"tomcat-admin-webapps-7.0.76-8.h8",
"tomcat-el-2.2-api-7.0.76-8.h8",
"tomcat-jsp-2.2-api-7.0.76-8.h8",
"tomcat-lib-7.0.76-8.h8",
"tomcat-servlet-3.0-api-7.0.76-8.h8",
"tomcat-webapps-7.0.76-8.h8"];
foreach (pkg in pkgs)
if (rpm_check(release:"EulerOS-2.0", sp:"3", reference:pkg)) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
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, "tomcat");
}
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
99.9%