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
AI Score
Confidence
High
EPSS
Percentile
49.2%
The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-5660 advisory.
In PHP versions 8.0.* before 8.0.30, 8.1.* before 8.1.22, and 8.2.* before 8.2.8 various XML functions rely on libxml global state to track configuration variables, like whether external entities are loaded.
This state is assumed to be unchanged unless the user explicitly changes it by calling appropriate function. However, since the state is process-global, other modules - such as ImageMagick - may also use this library within the same process, and change that global state for their internal purposes, and leave it in a state where external entities loading is enabled. This can lead to the situation where external XML is parsed with external entities loaded, which can lead to disclosure of any local files accessible to PHP. This vulnerable state may persist in the same process across many requests, until the process is shut down. (CVE-2023-3823)
In PHP version 8.0.* before 8.0.30, 8.1.* before 8.1.22, and 8.2.* before 8.2.8, when loading phar file, while reading PHAR directory entries, insufficient length checking may lead to a stack buffer overflow, leading potentially to memory corruption or RCE. (CVE-2023-3824)
Note that Nessus has not tested for these issues 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 dsa-5660. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('compat.inc');
if (description)
{
script_id(193347);
script_version("1.2");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/14");
script_cve_id(
"CVE-2023-3823",
"CVE-2023-3824",
"CVE-2024-2756",
"CVE-2024-3096"
);
script_xref(name:"IAVA", value:"2024-A-0244-S");
script_name(english:"Debian dsa-5660 : libapache2-mod-php7.4 - security update");
script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing one or more security-related updates.");
script_set_attribute(attribute:"description", value:
"The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dsa-5660 advisory.
- In PHP versions 8.0.* before 8.0.30, 8.1.* before 8.1.22, and 8.2.* before 8.2.8 various XML functions
rely on libxml global state to track configuration variables, like whether external entities are loaded.
This state is assumed to be unchanged unless the user explicitly changes it by calling appropriate
function. However, since the state is process-global, other modules - such as ImageMagick - may also use
this library within the same process, and change that global state for their internal purposes, and leave
it in a state where external entities loading is enabled. This can lead to the situation where external
XML is parsed with external entities loaded, which can lead to disclosure of any local files accessible to
PHP. This vulnerable state may persist in the same process across many requests, until the process is shut
down. (CVE-2023-3823)
- In PHP version 8.0.* before 8.0.30, 8.1.* before 8.1.22, and 8.2.* before 8.2.8, when loading phar file,
while reading PHAR directory entries, insufficient length checking may lead to a stack buffer overflow,
leading potentially to memory corruption or RCE. (CVE-2023-3824)
Note that Nessus has not tested for these issues 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/php7.4");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2023-3823");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2023-3824");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2024-2756");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2024-3096");
script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/php7.4");
script_set_attribute(attribute:"solution", value:
"Upgrade the libapache2-mod-php7.4 packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
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:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-3824");
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:"2023/08/03");
script_set_attribute(attribute:"patch_publication_date", value:"2024/04/15");
script_set_attribute(attribute:"plugin_publication_date", value:"2024/04/16");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libapache2-mod-php7.4");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libphp7.4-embed");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-bcmath");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-bz2");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-cgi");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-cli");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-common");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-curl");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-dba");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-enchant");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-fpm");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-gd");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-gmp");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-imap");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-interbase");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-intl");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-json");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-ldap");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-mbstring");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-mysql");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-odbc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-opcache");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-pgsql");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-phpdbg");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-pspell");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-readline");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-snmp");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-soap");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-sqlite3");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-sybase");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-tidy");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-xml");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-xmlrpc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-xsl");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php7.4-zip");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:11.0");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_set_attribute(attribute:"stig_severity", value:"I");
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:"^(11)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 11.0', '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': '11.0', 'prefix': 'libapache2-mod-php7.4', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'libphp7.4-embed', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-bcmath', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-bz2', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-cgi', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-cli', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-common', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-curl', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-dba', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-dev', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-enchant', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-fpm', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-gd', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-gmp', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-imap', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-interbase', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-intl', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-json', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-ldap', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-mbstring', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-mysql', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-odbc', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-opcache', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-pgsql', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-phpdbg', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-pspell', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-readline', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-snmp', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-soap', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-sqlite3', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-sybase', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-tidy', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-xml', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-xmlrpc', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-xsl', 'reference': '7.4.33-1+deb11u5'},
{'release': '11.0', 'prefix': 'php7.4-zip', 'reference': '7.4.33-1+deb11u5'}
];
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_HOLE,
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, 'libapache2-mod-php7.4 / libphp7.4-embed / php7.4 / php7.4-bcmath / etc');
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-3823
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-3824
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-2756
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-3096
packages.debian.org/source/bullseye/php7.4
security-tracker.debian.org/tracker/CVE-2023-3823
security-tracker.debian.org/tracker/CVE-2023-3824
security-tracker.debian.org/tracker/CVE-2024-2756
security-tracker.debian.org/tracker/CVE-2024-3096
security-tracker.debian.org/tracker/source-package/php7.4
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
AI Score
Confidence
High
EPSS
Percentile
49.2%