The version of xstream installed on the remote host is prior to 1.3.1-16. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2021-1729 advisory.
XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. A user is only affected if using the version out of the box with JDK 1.7u21 or below. However, this scenario can be adjusted easily to an external Xalan that works regardless of the version of the Java runtime. No user is affected, who followed the recommendation to setup XStream’s security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose. (CVE-2021-39139)
XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to allocate 100% CPU time on the target system depending on CPU type or parallel execution of such a payload resulting in a denial of service only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream’s security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose. (CVE-2021-39140)
XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream’s security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose. (CVE-2021-39141, CVE-2021-39145, CVE-2021-39146, CVE-2021-39147, CVE-2021-39148, CVE-2021-39149, CVE-2021-39151, CVE-2021-39154)
XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker has sufficient rights to execute commands of the host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream’s security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose. (CVE-2021-39144)
XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to request data from internal resources that are not publicly available only by manipulating the processed input stream with a Java runtime version 14 to 8. No user is affected, who followed the recommendation to setup XStream’s security framework with a whitelist limited to the minimal required types. If you rely on XStream’s default blacklist of the Security Framework, you will have to use at least version 1.4.18. (CVE-2021-39150, CVE-2021-39152)
XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream, if using the version out of the box with Java runtime version 14 to 8 or with JavaFX installed. No user is affected, who followed the recommendation to setup XStream’s security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose. (CVE-2021-39153)
Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux 2 Security Advisory ALAS-2021-1729.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(155989);
script_version("1.6");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/03/10");
script_cve_id(
"CVE-2021-39139",
"CVE-2021-39140",
"CVE-2021-39141",
"CVE-2021-39144",
"CVE-2021-39145",
"CVE-2021-39146",
"CVE-2021-39147",
"CVE-2021-39148",
"CVE-2021-39149",
"CVE-2021-39150",
"CVE-2021-39151",
"CVE-2021-39152",
"CVE-2021-39153",
"CVE-2021-39154"
);
script_xref(name:"ALAS", value:"2021-1729");
script_xref(name:"CEA-ID", value:"CEA-2022-0035");
script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2023/03/31");
script_name(english:"Amazon Linux 2 : xstream (ALAS-2021-1729)");
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 xstream installed on the remote host is prior to 1.3.1-16. It is, therefore, affected by multiple
vulnerabilities as referenced in the ALAS2-2021-1729 advisory.
- XStream is a simple library to serialize objects to XML and back again. In affected versions this
vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by
manipulating the processed input stream. A user is only affected if using the version out of the box with
JDK 1.7u21 or below. However, this scenario can be adjusted easily to an external Xalan that works
regardless of the version of the Java runtime. No user is affected, who followed the recommendation to
setup XStream's security framework with a whitelist limited to the minimal required types. XStream 1.4.18
uses no longer a blacklist by default, since it cannot be secured for general purpose. (CVE-2021-39139)
- XStream is a simple library to serialize objects to XML and back again. In affected versions this
vulnerability may allow a remote attacker to allocate 100% CPU time on the target system depending on CPU
type or parallel execution of such a payload resulting in a denial of service only by manipulating the
processed input stream. No user is affected, who followed the recommendation to setup XStream's security
framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a
blacklist by default, since it cannot be secured for general purpose. (CVE-2021-39140)
- XStream is a simple library to serialize objects to XML and back again. In affected versions this
vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by
manipulating the processed input stream. No user is affected, who followed the recommendation to setup
XStream's security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses
no longer a blacklist by default, since it cannot be secured for general purpose. (CVE-2021-39141,
CVE-2021-39145, CVE-2021-39146, CVE-2021-39147, CVE-2021-39148, CVE-2021-39149, CVE-2021-39151,
CVE-2021-39154)
- XStream is a simple library to serialize objects to XML and back again. In affected versions this
vulnerability may allow a remote attacker has sufficient rights to execute commands of the host only by
manipulating the processed input stream. No user is affected, who followed the recommendation to setup
XStream's security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses
no longer a blacklist by default, since it cannot be secured for general purpose. (CVE-2021-39144)
- XStream is a simple library to serialize objects to XML and back again. In affected versions this
vulnerability may allow a remote attacker to request data from internal resources that are not publicly
available only by manipulating the processed input stream with a Java runtime version 14 to 8. No user is
affected, who followed the recommendation to setup XStream's security framework with a whitelist limited
to the minimal required types. If you rely on XStream's default blacklist of the [Security
Framework](https://x-stream.github.io/security.html#framework), you will have to use at least version
1.4.18. (CVE-2021-39150, CVE-2021-39152)
- XStream is a simple library to serialize objects to XML and back again. In affected versions this
vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by
manipulating the processed input stream, if using the version out of the box with Java runtime version 14
to 8 or with JavaFX installed. No user is affected, who followed the recommendation to setup XStream's
security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a
blacklist by default, since it cannot be secured for general purpose. (CVE-2021-39153)
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-2021-1729.html");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-39139");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-39140");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-39141");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-39144");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-39145");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-39146");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-39147");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-39148");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-39149");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-39150");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-39151");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-39152");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-39153");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-39154");
script_set_attribute(attribute:"solution", value:
"Run 'yum update xstream' to update your system.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/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:L/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-2021-39139");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"exploit_framework_core", value:"true");
script_set_attribute(attribute:"metasploit_name", value:'VMware NSX Manager XStream unauthenticated RCE');
script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2021/08/23");
script_set_attribute(attribute:"patch_publication_date", value:"2021/12/08");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/12/10");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:xstream");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:xstream-javadoc");
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) 2021-2023 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("audit.inc");
include("global_settings.inc");
include("rpm.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var release = get_kb_item("Host/AmazonLinux/release");
if (isnull(release) || !strlen(release)) audit(AUDIT_OS_NOT, "Amazon Linux");
var os_ver = pregmatch(pattern: "^AL(A|\d)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
var 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':'xstream-1.3.1-16.amzn2', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE},
{'reference':'xstream-javadoc-1.3.1-16.amzn2', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE}
];
var flag = 0;
foreach package_array ( pkgs ) {
var reference = NULL;
var release = NULL;
var cpu = NULL;
var el_string = NULL;
var rpm_spec_vers_cmp = NULL;
var 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
{
var tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "xstream / xstream-javadoc");
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39139
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39140
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39141
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39144
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39145
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39146
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39147
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39148
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39149
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39150
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39151
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39152
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39153
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39154
access.redhat.com/security/cve/CVE-2021-39139
access.redhat.com/security/cve/CVE-2021-39140
access.redhat.com/security/cve/CVE-2021-39141
access.redhat.com/security/cve/CVE-2021-39144
access.redhat.com/security/cve/CVE-2021-39145
access.redhat.com/security/cve/CVE-2021-39146
access.redhat.com/security/cve/CVE-2021-39147
access.redhat.com/security/cve/CVE-2021-39148
access.redhat.com/security/cve/CVE-2021-39149
access.redhat.com/security/cve/CVE-2021-39150
access.redhat.com/security/cve/CVE-2021-39151
access.redhat.com/security/cve/CVE-2021-39152
access.redhat.com/security/cve/CVE-2021-39153
access.redhat.com/security/cve/CVE-2021-39154
alas.aws.amazon.com/AL2/ALAS-2021-1729.html