7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.7 High
AI Score
Confidence
High
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.009 Low
EPSS
Percentile
82.3%
The remote host is missing an update for the Debian
# SPDX-FileCopyrightText: 2018 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("1.3.6.1.4.1.25623.1.0.890973");
script_cve_id("CVE-2017-9022", "CVE-2017-9023");
script_tag(name:"creation_date", value:"2018-01-28 23:00:00 +0000 (Sun, 28 Jan 2018)");
script_version("2024-02-02T05:06:06+0000");
script_tag(name:"last_modification", value:"2024-02-02 05:06:06 +0000 (Fri, 02 Feb 2024)");
script_tag(name:"cvss_base", value:"5.0");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2017-06-21 16:57:57 +0000 (Wed, 21 Jun 2017)");
script_name("Debian: Security Advisory (DLA-973-1)");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2018 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=DEB7");
script_xref(name:"Advisory-ID", value:"DLA-973-1");
script_xref(name:"URL", value:"https://www.debian.org/lts/security/2017/DLA-973-1");
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 'strongswan' package(s) announced via the DLA-973-1 advisory.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");
script_tag(name:"insight", value:"Two denial of service vulnerabilities were identified in strongSwan, an IKE/IPsec suite, using Google's OSS-Fuzz fuzzing project.
CVE-2017-9022
RSA public keys passed to the gmp plugin aren't validated sufficiently before attempting signature verification, so that invalid input might lead to a floating point exception and crash of the process. A certificate with an appropriately prepared public key sent by a peer could be used for a denial-of-service attack.
CVE-2017-9023
ASN.1 CHOICE types are not correctly handled by the ASN.1 parser when parsing X.509 certificates with extensions that use such types. This could lead to infinite looping of the thread parsing a specifically crafted certificate.
For Debian 7 Wheezy, these problems have been fixed in version 4.5.2-1.5+deb7u9.
We recommend that you upgrade your strongswan 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:"'strongswan' package(s) on Debian 7.");
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 == "DEB7") {
if(!isnull(res = isdpkgvuln(pkg:"libstrongswan", ver:"4.5.2-1.5+deb7u9", rls:"DEB7"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"strongswan", ver:"4.5.2-1.5+deb7u9", rls:"DEB7"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"strongswan-dbg", ver:"4.5.2-1.5+deb7u9", rls:"DEB7"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"strongswan-ikev1", ver:"4.5.2-1.5+deb7u9", rls:"DEB7"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"strongswan-ikev2", ver:"4.5.2-1.5+deb7u9", rls:"DEB7"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"strongswan-nm", ver:"4.5.2-1.5+deb7u9", rls:"DEB7"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"strongswan-starter", ver:"4.5.2-1.5+deb7u9", rls:"DEB7"))) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}
exit(0);
}
exit(0);
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.7 High
AI Score
Confidence
High
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.009 Low
EPSS
Percentile
82.3%