5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
6.9 Medium
AI Score
Confidence
Low
0.003 Low
EPSS
Percentile
65.3%
The remote Debian 10 host has packages installed that are affected by a vulnerability as referenced in the dla-3725 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 Debian Security Advisory dla-3725. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('compat.inc');
if (description)
{
script_id(189772);
script_version("1.0");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/30");
script_cve_id("CVE-2023-51764");
script_name(english:"Debian dla-3725 : postfix - 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 host has packages installed that are affected by a vulnerability as referenced in the dla-3725
advisory.
- Postfix through 3.8.5 allows SMTP smuggling unless configured with
smtpd_data_restrictions=reject_unauth_pipelining and smtpd_discard_ehlo_keywords=chunking (or certain
other options that exist in recent versions). Remote attackers can use a published exploitation technique
to inject e-mail messages with a spoofed MAIL FROM address, allowing bypass of an SPF protection
mechanism. This occurs because Postfix supports <LF>.<CR><LF> but some other popular e-mail servers do
not. To prevent attack variants (by always disallowing <LF> without <CR>), a different solution is
required, such as the smtpd_forbid_bare_newline=yes option with a Postfix minimum version of 3.5.23,
3.6.13, 3.7.9, 3.8.4, or 3.9. (CVE-2023-51764)
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/postfix");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2023-51764");
script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/buster/postfix");
script_set_attribute(attribute:"solution", value:
"Upgrade the postfix packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-51764");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2023/12/24");
script_set_attribute(attribute:"patch_publication_date", value:"2024/01/30");
script_set_attribute(attribute:"plugin_publication_date", value:"2024/01/30");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:postfix");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:postfix-cdb");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:postfix-doc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:postfix-ldap");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:postfix-lmdb");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:postfix-mysql");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:postfix-pcre");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:postfix-pgsql");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:postfix-sqlite");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:10.0");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Debian Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2024 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('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 debian_release = get_kb_item('Host/Debian/release');
if ( isnull(debian_release) ) audit(AUDIT_OS_NOT, 'Debian');
debian_release = chomp(debian_release);
if (! preg(pattern:"^(10)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 10.0', 'Debian ' + 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': 'postfix', 'reference': '3.4.23-0+deb10u2'},
{'release': '10.0', 'prefix': 'postfix-cdb', 'reference': '3.4.23-0+deb10u2'},
{'release': '10.0', 'prefix': 'postfix-doc', 'reference': '3.4.23-0+deb10u2'},
{'release': '10.0', 'prefix': 'postfix-ldap', 'reference': '3.4.23-0+deb10u2'},
{'release': '10.0', 'prefix': 'postfix-lmdb', 'reference': '3.4.23-0+deb10u2'},
{'release': '10.0', 'prefix': 'postfix-mysql', 'reference': '3.4.23-0+deb10u2'},
{'release': '10.0', 'prefix': 'postfix-pcre', 'reference': '3.4.23-0+deb10u2'},
{'release': '10.0', 'prefix': 'postfix-pgsql', 'reference': '3.4.23-0+deb10u2'},
{'release': '10.0', 'prefix': 'postfix-sqlite', 'reference': '3.4.23-0+deb10u2'}
];
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, 'postfix / postfix-cdb / postfix-doc / postfix-ldap / postfix-lmdb / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
debian | debian_linux | postfix | p-cpe:/a:debian:debian_linux:postfix |
debian | debian_linux | postfix-ldap | p-cpe:/a:debian:debian_linux:postfix-ldap |
debian | debian_linux | postfix-cdb | p-cpe:/a:debian:debian_linux:postfix-cdb |
debian | debian_linux | 10.0 | cpe:/o:debian:debian_linux:10.0 |
debian | debian_linux | postfix-mysql | p-cpe:/a:debian:debian_linux:postfix-mysql |
debian | debian_linux | postfix-lmdb | p-cpe:/a:debian:debian_linux:postfix-lmdb |
debian | debian_linux | postfix-pcre | p-cpe:/a:debian:debian_linux:postfix-pcre |
debian | debian_linux | postfix-sqlite | p-cpe:/a:debian:debian_linux:postfix-sqlite |
debian | debian_linux | postfix-doc | p-cpe:/a:debian:debian_linux:postfix-doc |
debian | debian_linux | postfix-pgsql | p-cpe:/a:debian:debian_linux:postfix-pgsql |
5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
6.9 Medium
AI Score
Confidence
Low
0.003 Low
EPSS
Percentile
65.3%