7.5 High
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
9.8 High
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
8.3 High
AI Score
Confidence
Low
0.974 High
EPSS
Percentile
99.9%
The remote host is missing an update for the Debian
# 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("1.3.6.1.4.1.25623.1.0.892133");
script_cve_id("CVE-2019-17569", "CVE-2020-1935", "CVE-2020-1938");
script_tag(name:"creation_date", value:"2020-03-05 04:00:06 +0000 (Thu, 05 Mar 2020)");
script_version("2024-02-02T05:06:07+0000");
script_tag(name:"last_modification", value:"2024-02-02 05:06:07 +0000 (Fri, 02 Feb 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("Debian: Security Advisory (DLA-2133-1)");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2020 Greenbone AG");
script_family("Debian Local Security Checks");
script_dependencies("gather-package-list.nasl");
script_mandatory_keys("ssh/login/debian_linux", "ssh/login/packages", re:"ssh/login/release=DEB8");
script_xref(name:"Advisory-ID", value:"DLA-2133-1");
script_xref(name:"URL", value:"https://www.debian.org/lts/security/2020/DLA-2133-1");
script_xref(name:"URL", value:"https://wiki.debian.org/LTS");
script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'tomcat7' package(s) announced via the DLA-2133-1 advisory.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");
script_tag(name:"insight", value:"Several security vulnerabilities have been discovered in the Tomcat servlet and JSP engine.
CVE-2019-17569
The refactoring in 7.0.98 introduced a regression. The result of the regression was that invalid Transfer-Encoding headers were incorrectly processed leading 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
The HTTP header parsing code used an approach to end-of-line (EOL) 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-2020-1938
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. Prior to Tomcat 7.0.100, 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.
Note that Debian already disabled the AJP connector by default. Mitigation is only required if the AJP port was made accessible to untrusted users.
For Debian 8 Jessie, these problems have been fixed in version 7.0.56-3+really7.0.100-1.
We recommend that you upgrade your tomcat7 packages.
Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: [link moved to references]");
script_tag(name:"affected", value:"'tomcat7' package(s) on Debian 8.");
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");
exit(0);
}
include("revisions-lib.inc");
include("pkg-lib-deb.inc");
release = dpkg_get_ssh_release();
if(!release)
exit(0);
res = "";
report = "";
if(release == "DEB8") {
if(!isnull(res = isdpkgvuln(pkg:"libservlet3.0-java", ver:"7.0.56-3+really7.0.100-1", rls:"DEB8"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libservlet3.0-java-doc", ver:"7.0.56-3+really7.0.100-1", rls:"DEB8"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libtomcat7-java", ver:"7.0.56-3+really7.0.100-1", rls:"DEB8"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"tomcat7", ver:"7.0.56-3+really7.0.100-1", rls:"DEB8"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"tomcat7-admin", ver:"7.0.56-3+really7.0.100-1", rls:"DEB8"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"tomcat7-common", ver:"7.0.56-3+really7.0.100-1", rls:"DEB8"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"tomcat7-docs", ver:"7.0.56-3+really7.0.100-1", rls:"DEB8"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"tomcat7-examples", ver:"7.0.56-3+really7.0.100-1", rls:"DEB8"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"tomcat7-user", ver:"7.0.56-3+really7.0.100-1", rls:"DEB8"))) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}
exit(0);
}
exit(0);
7.5 High
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
9.8 High
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
8.3 High
AI Score
Confidence
Low
0.974 High
EPSS
Percentile
99.9%