Huawei EulerOS: Security Advisory for tomcat (EulerOS-SA-2020-1302)

# SPDX-FileCopyrightText: 2020 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.1.2.2020.1302");
  script_cve_id("CVE-2020-1935", "CVE-2020-1938");
  script_tag(name:"creation_date", value:"2020-03-23 07:40:18 +0000 (Mon, 23 Mar 2020)");
  script_version("2024-08-08T05:05:41+0000");
  script_tag(name:"last_modification", value:"2024-08-08 05:05:41 +0000 (Thu, 08 Aug 2024)");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2020-02-27 15:39:45 +0000 (Thu, 27 Feb 2020)");

  script_name("Huawei EulerOS: Security Advisory for tomcat (EulerOS-SA-2020-1302)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2020 Greenbone AG");
  script_family("Huawei EulerOS Local Security Checks");
  script_dependencies("gb_huawei_euleros_consolidation.nasl");
  script_mandatory_keys("ssh/login/euleros", "ssh/login/rpms", re:"ssh/login/release=EULEROS\-2\.0SP8");

  script_xref(name:"Advisory-ID", value:"EulerOS-SA-2020-1302");
  script_xref(name:"URL", value:"https://developer.huaweicloud.com/intl/en-us/euleros/securitydetail.html?secId=EulerOS-SA-2020-1302");

  script_tag(name:"summary", value:"The remote host is missing an update for the Huawei EulerOS 'tomcat' package(s) announced via the EulerOS-SA-2020-1302 advisory.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");

  script_tag(name:"insight", value:"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)

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)");

  script_tag(name:"affected", value:"'tomcat' package(s) on Huawei EulerOS V2.0SP8.");

  script_tag(name:"solution", value:"Please install the updated package(s).");

  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"qod_type", value:"package");
  script_xref(name:"CISA", value:"Known Exploited Vulnerability (KEV) catalog");
  script_xref(name:"URL", value:"https://www.cisa.gov/known-exploited-vulnerabilities-catalog");

  exit(0);
}

include("revisions-lib.inc");
include("pkg-lib-rpm.inc");

release = rpm_get_ssh_release();
if(!release)
  exit(0);

res = "";
report = "";

if(release == "EULEROS-2.0SP8") {

  if(!isnull(res = isrpmvuln(pkg:"tomcat", rpm:"tomcat~9.0.10~1.h6.eulerosv2r8", rls:"EULEROS-2.0SP8"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"tomcat-admin-webapps", rpm:"tomcat-admin-webapps~9.0.10~1.h6.eulerosv2r8", rls:"EULEROS-2.0SP8"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"tomcat-el-3.0-api", rpm:"tomcat-el-3.0-api~9.0.10~1.h6.eulerosv2r8", rls:"EULEROS-2.0SP8"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"tomcat-jsp-2.3-api", rpm:"tomcat-jsp-2.3-api~9.0.10~1.h6.eulerosv2r8", rls:"EULEROS-2.0SP8"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"tomcat-lib", rpm:"tomcat-lib~9.0.10~1.h6.eulerosv2r8", rls:"EULEROS-2.0SP8"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"tomcat-servlet-4.0-api", rpm:"tomcat-servlet-4.0-api~9.0.10~1.h6.eulerosv2r8", rls:"EULEROS-2.0SP8"))) {
    report += res;
  }

  if(report != "") {
    security_message(data:report);
  } else if(__pkg_match) {
    exit(99);
  }
  exit(0);
}

exit(0);