5.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:P/A:N
4.8 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
0.002 Low
EPSS
Percentile
62.3%
The version of tomcat installed on the remote host is prior to 7.0.76-10. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2023-2216 advisory.
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 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux 2 Security Advisory ALAS-2023-2216.
##
include('compat.inc');
if (description)
{
script_id(180086);
script_version("1.0");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/08/23");
script_cve_id("CVE-2020-1935");
script_xref(name:"IAVB", value:"2020-B-0010-S");
script_name(english:"Amazon Linux 2 : tomcat (ALAS-2023-2216)");
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 tomcat installed on the remote host is prior to 7.0.76-10. It is, therefore, affected by a vulnerability
as referenced in the ALAS2-2023-2216 advisory.
- In Apache Tomcat 9.0.0.M1 to 9.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99 the HTTP header parsing code used
an approach to end-of-line parsing that allowed some invalid HTTP headers to be parsed as valid. This led
to a possibility of HTTP Request Smuggling if Tomcat was located behind a reverse proxy that incorrectly
handled the invalid Transfer-Encoding header in a particular manner. Such a reverse proxy is considered
unlikely. (CVE-2020-1935)
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-2023-2216.html");
script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/cve/html/CVE-2020-1935.html");
script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/faqs.html");
script_set_attribute(attribute:"solution", value:
"Run 'yum update tomcat' to update your system.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-1935");
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:"2020/02/11");
script_set_attribute(attribute:"patch_publication_date", value:"2023/08/17");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/08/23");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:tomcat");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:tomcat-admin-webapps");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:tomcat-docs-webapp");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:tomcat-el-2.2-api");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:tomcat-javadoc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:tomcat-jsp-2.2-api");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:tomcat-jsvc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:tomcat-lib");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:tomcat-servlet-3.0-api");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:tomcat-webapps");
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:"I");
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':'tomcat-7.0.76-10.amzn2.0.6', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE},
{'reference':'tomcat-admin-webapps-7.0.76-10.amzn2.0.6', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE},
{'reference':'tomcat-docs-webapp-7.0.76-10.amzn2.0.6', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE},
{'reference':'tomcat-el-2.2-api-7.0.76-10.amzn2.0.6', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE},
{'reference':'tomcat-javadoc-7.0.76-10.amzn2.0.6', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE},
{'reference':'tomcat-jsp-2.2-api-7.0.76-10.amzn2.0.6', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE},
{'reference':'tomcat-jsvc-7.0.76-10.amzn2.0.6', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE},
{'reference':'tomcat-lib-7.0.76-10.amzn2.0.6', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE},
{'reference':'tomcat-servlet-3.0-api-7.0.76-10.amzn2.0.6', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE},
{'reference':'tomcat-webapps-7.0.76-10.amzn2.0.6', 'release':'AL2', '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, "tomcat / tomcat-admin-webapps / tomcat-docs-webapp / etc");
}
Vendor | Product | Version | CPE |
---|---|---|---|
amazon | linux | tomcat | p-cpe:/a:amazon:linux:tomcat |
amazon | linux | tomcat-admin-webapps | p-cpe:/a:amazon:linux:tomcat-admin-webapps |
amazon | linux | tomcat-docs-webapp | p-cpe:/a:amazon:linux:tomcat-docs-webapp |
amazon | linux | tomcat-el-2.2-api | p-cpe:/a:amazon:linux:tomcat-el-2.2-api |
amazon | linux | tomcat-javadoc | p-cpe:/a:amazon:linux:tomcat-javadoc |
amazon | linux | tomcat-jsp-2.2-api | p-cpe:/a:amazon:linux:tomcat-jsp-2.2-api |
amazon | linux | tomcat-jsvc | p-cpe:/a:amazon:linux:tomcat-jsvc |
amazon | linux | tomcat-lib | p-cpe:/a:amazon:linux:tomcat-lib |
amazon | linux | tomcat-servlet-3.0-api | p-cpe:/a:amazon:linux:tomcat-servlet-3.0-api |
amazon | linux | tomcat-webapps | p-cpe:/a:amazon:linux:tomcat-webapps |
5.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:P/A:N
4.8 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
0.002 Low
EPSS
Percentile
62.3%