The remote Debian 10 / 11 host has packages installed that are affected by a vulnerability as referenced in the dsa-5056 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 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dsa-5056. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(157253);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2022/02/08");
script_cve_id("CVE-2021-45079");
script_name(english:"Debian DSA-5056-1 : strongswan - security update");
script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security-related update.");
script_set_attribute(attribute:"description", value:
"The remote Debian 10 / 11 host has packages installed that are affected by a vulnerability as referenced in the dsa-5056
advisory.
- In strongSwan before 5.9.5, a malicious responder can send an EAP-Success message too early without
actually authenticating the client and (in the case of EAP methods with mutual authentication and EAP-only
authentication for IKEv2) even without server authentication. (CVE-2021-45079)
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://security-tracker.debian.org/tracker/source-package/strongswan");
script_set_attribute(attribute:"see_also", value:"https://www.debian.org/security/2022/dsa-5056");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-45079");
script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/buster/strongswan");
script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/strongswan");
script_set_attribute(attribute:"solution", value:
"Upgrade the strongswan packages.
For the stable distribution (bullseye), this problem has been fixed in version 5.9.1-1+deb11u2.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:P");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-45079");
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:"2022/01/25");
script_set_attribute(attribute:"patch_publication_date", value:"2022/01/24");
script_set_attribute(attribute:"plugin_publication_date", value:"2022/01/31");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:charon-cmd");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:charon-systemd");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcharon-extauth-plugins");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcharon-extra-plugins");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libstrongswan");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libstrongswan-extra-plugins");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libstrongswan-standard-plugins");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:strongswan");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:strongswan-charon");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:strongswan-libcharon");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:strongswan-nm");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:strongswan-pki");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:strongswan-scepclient");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:strongswan-starter");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:strongswan-swanctl");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:10.0");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:11.0");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Debian Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2022 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");
exit(0);
}
include('audit.inc');
include('debian_package.inc');
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);
var release = get_kb_item('Host/Debian/release');
if ( isnull(release) ) audit(AUDIT_OS_NOT, 'Debian');
var release = chomp(release);
if (! preg(pattern:"^(10)\.[0-9]+|^(11)\.[0-9]+", string:release)) audit(AUDIT_OS_NOT, 'Debian 10.0 / 11.0', 'Debian ' + release);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Debian', cpu);
var pkgs = [
{'release': '10.0', 'prefix': 'charon-cmd', 'reference': '5.7.2-1+deb10u2'},
{'release': '10.0', 'prefix': 'charon-systemd', 'reference': '5.7.2-1+deb10u2'},
{'release': '10.0', 'prefix': 'libcharon-extauth-plugins', 'reference': '5.7.2-1+deb10u2'},
{'release': '10.0', 'prefix': 'libcharon-extra-plugins', 'reference': '5.7.2-1+deb10u2'},
{'release': '10.0', 'prefix': 'libstrongswan', 'reference': '5.7.2-1+deb10u2'},
{'release': '10.0', 'prefix': 'libstrongswan-extra-plugins', 'reference': '5.7.2-1+deb10u2'},
{'release': '10.0', 'prefix': 'libstrongswan-standard-plugins', 'reference': '5.7.2-1+deb10u2'},
{'release': '10.0', 'prefix': 'strongswan', 'reference': '5.7.2-1+deb10u2'},
{'release': '10.0', 'prefix': 'strongswan-charon', 'reference': '5.7.2-1+deb10u2'},
{'release': '10.0', 'prefix': 'strongswan-libcharon', 'reference': '5.7.2-1+deb10u2'},
{'release': '10.0', 'prefix': 'strongswan-nm', 'reference': '5.7.2-1+deb10u2'},
{'release': '10.0', 'prefix': 'strongswan-pki', 'reference': '5.7.2-1+deb10u2'},
{'release': '10.0', 'prefix': 'strongswan-scepclient', 'reference': '5.7.2-1+deb10u2'},
{'release': '10.0', 'prefix': 'strongswan-starter', 'reference': '5.7.2-1+deb10u2'},
{'release': '10.0', 'prefix': 'strongswan-swanctl', 'reference': '5.7.2-1+deb10u2'},
{'release': '11.0', 'prefix': 'charon-cmd', 'reference': '5.9.1-1+deb11u2'},
{'release': '11.0', 'prefix': 'charon-systemd', 'reference': '5.9.1-1+deb11u2'},
{'release': '11.0', 'prefix': 'libcharon-extauth-plugins', 'reference': '5.9.1-1+deb11u2'},
{'release': '11.0', 'prefix': 'libcharon-extra-plugins', 'reference': '5.9.1-1+deb11u2'},
{'release': '11.0', 'prefix': 'libstrongswan', 'reference': '5.9.1-1+deb11u2'},
{'release': '11.0', 'prefix': 'libstrongswan-extra-plugins', 'reference': '5.9.1-1+deb11u2'},
{'release': '11.0', 'prefix': 'libstrongswan-standard-plugins', 'reference': '5.9.1-1+deb11u2'},
{'release': '11.0', 'prefix': 'strongswan', 'reference': '5.9.1-1+deb11u2'},
{'release': '11.0', 'prefix': 'strongswan-charon', 'reference': '5.9.1-1+deb11u2'},
{'release': '11.0', 'prefix': 'strongswan-libcharon', 'reference': '5.9.1-1+deb11u2'},
{'release': '11.0', 'prefix': 'strongswan-nm', 'reference': '5.9.1-1+deb11u2'},
{'release': '11.0', 'prefix': 'strongswan-pki', 'reference': '5.9.1-1+deb11u2'},
{'release': '11.0', 'prefix': 'strongswan-scepclient', 'reference': '5.9.1-1+deb11u2'},
{'release': '11.0', 'prefix': 'strongswan-starter', 'reference': '5.9.1-1+deb11u2'},
{'release': '11.0', 'prefix': 'strongswan-swanctl', 'reference': '5.9.1-1+deb11u2'}
];
var flag = 0;
foreach package_array ( pkgs ) {
var release = NULL;
var prefix = NULL;
var reference = NULL;
if (!empty_or_null(package_array['release'])) release = package_array['release'];
if (!empty_or_null(package_array['prefix'])) prefix = package_array['prefix'];
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (release && prefix && reference) {
if (deb_check(release:release, prefix:prefix, reference:reference)) flag++;
}
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : deb_report_get()
);
exit(0);
}
else
{
var tested = deb_pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'charon-cmd / charon-systemd / libcharon-extauth-plugins / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
debian | debian_linux | charon-cmd | p-cpe:/a:debian:debian_linux:charon-cmd |
debian | debian_linux | charon-systemd | p-cpe:/a:debian:debian_linux:charon-systemd |
debian | debian_linux | libcharon-extauth-plugins | p-cpe:/a:debian:debian_linux:libcharon-extauth-plugins |
debian | debian_linux | libcharon-extra-plugins | p-cpe:/a:debian:debian_linux:libcharon-extra-plugins |
debian | debian_linux | libstrongswan | p-cpe:/a:debian:debian_linux:libstrongswan |
debian | debian_linux | libstrongswan-extra-plugins | p-cpe:/a:debian:debian_linux:libstrongswan-extra-plugins |
debian | debian_linux | libstrongswan-standard-plugins | p-cpe:/a:debian:debian_linux:libstrongswan-standard-plugins |
debian | debian_linux | strongswan | p-cpe:/a:debian:debian_linux:strongswan |
debian | debian_linux | strongswan-charon | p-cpe:/a:debian:debian_linux:strongswan-charon |
debian | debian_linux | strongswan-libcharon | p-cpe:/a:debian:debian_linux:strongswan-libcharon |