Fedora 43 : php (2026-d755ca77c4)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##
# The descriptive text and package checks in this plugin were
# extracted from Fedora Security Advisory FEDORA-2026-d755ca77c4
#

include('compat.inc');

if (description)
{
  script_id(333260);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/07");

  script_cve_id("CVE-2026-7260", "CVE-2026-17543", "CVE-2026-17544");
  script_xref(name:"IAVA", value:"2026-A-0814");
  script_xref(name:"FEDORA", value:"2026-d755ca77c4");

  script_name(english:"Fedora 43 : php (2026-d755ca77c4)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Fedora host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the
FEDORA-2026-d755ca77c4 advisory.

    **PHP version 8.4.24** (30 Jul 2026)

    **BCMath:**

    * Fixed [GHSA-x692-q9x7-8c3f](https://github.com/php/php-src/security/advisories/GHSA-x692-q9x7-8c3f)
    (Out-of-bounds write in bccomp()). (**CVE-2026-17544**) (Recep Asan)

    **Calendar:**

    * Fixed bug [GH-22602](https://github.com/php/php-src/issues/22602) (gregoriantojd() and juliantojd()
    integer overflow with INT_MAX year). (arshidkv12)

    **Date:**

    * Update timelib to 2022.17. (Derick)
    * Fixed bug [GH-19803](https://github.com/php/php-src/issues/19803) (Parsing a string with a single white
    space does create an error). (Derick)
    * Fixed Unix timestamps in February of the year 0 are misparsed with @-notation. (LukasGelbmann)
    * Fixed bug [GH-11310](https://github.com/php/php-src/issues/11310) (__debugInfo does nothing on userland
    classes extending Date classes). (Derick)

    **DBA:**

    * Fixed OOB read on malformed length field in dba flatfile handler. (alhudz)

    **DOM:**

    * Fixed bug [GH-22570](https://github.com/php/php-src/issues/22570) (Stack overflow when serializing a
    deeply nested Dom\XMLDocument). (iliaal)

    **Exif:**

    * Fixed bug [GH-11020](https://github.com/php/php-src/issues/11020) (exif_read_data() emits a spurious
    Illegal IFD size warning when an IFD is not followed by a next-IFD offset). (Eyp Can Akman)

    **Hash:**

    * Fixed bug [GH-18173](https://github.com/php/php-src/issues/18173) (ext/hash relies on implementation-
    defined malloc alignment). (iliaal)

    **Intl:**

    * Fixed Locale::lookup() and locale_lookup() to return NULL instead of the fallback locale when a language
    tag cannot be canonicalized. (Weilin Du)
    * Fixed memory leaks when calling Collator::__construct() or Spoofchecker::__construct() twice. (Weilin
    Du)
    * Fixed IntlChar methods leaving stale global error state after successful calls. (Xuyang Zhang)

    **ODBC:**

    * Fixed bug [GH-22668](https://github.com/php/php-src/issues/22668) (Heap buffer over-read when a column
    value exceeds the driver-reported display size). (iliaal)

    **OpenSSL:**

    * Fixed timeout for supplemental read at end of a blocking stream in SSL stream wrapper. (ilutov)

    **PDO_ODBC:**

    * Fixed bug [GH-20726](https://github.com/php/php-src/issues/20726) (Crash with ODBC connection pooling
    when the DSN carries no credentials). (iliaal)
    * Fixed bug [GH-22667](https://github.com/php/php-src/issues/22667) (Heap buffer over-read when a column
    value exceeds the driver-reported display size). (iliaal)
    * Fixed bug [GH-22666](https://github.com/php/php-src/issues/22666) (Heap buffer overflow when an output
    parameter value is longer than the declared maxlen). (iliaal)
    * Fixed bug [GH-22665](https://github.com/php/php-src/issues/22665) (Out-of-bounds write when the ODBC
    driver reports a diagnostic message length beyond the error buffer). (iliaal)

    **PGSQL:**

    * Fixed [GHSA-7qpv-r5mr-78m4](https://github.com/php/php-src/security/advisories/GHSA-7qpv-r5mr-78m4) (SQL
    injection via E'...' backslash breakout). (**CVE-2026-17543**) (ilutov)

    **Phar:**

    * Fixed inconsistent handling of the magic .phar directory. Paths such as /.phar remain protected,
    while non-magic paths that merely start with .phar are handled consistently across file and directory
    creation, copying, ArrayAccess, stream lookup, directory iteration and extraction. (Weilin Du)
    * Fixed [GHSA-vc5h-9ppw-p5f3](https://github.com/php/php-src/security/advisories/GHSA-vc5h-9ppw-p5f3)
    (Crash via recursive symlinks). (**CVE-2026-7260**) (Jakub Zelenka)

    **PHPDBG:**

    * Fixed bug [GH-17387](https://github.com/php/php-src/issues/17387) (Trivial crash in phpdbg lexer).
    (iliaal)
    * Fixed fleaked lowercased lookup keys in phpdbg_resolve_opline_break. (jorgsowa)
    * Fixed off-by-one in phpdbg_safe_class_lookup() causing class lookups to always fail during phpdbg's
    signal-safe interruption path. (jorgsowa)

    **Reflection:**

    * Fixed bug [GH-22324](https://github.com/php/php-src/issues/22324) (Ignore leading namespace separator in
    ReflectionParameter::__construct()). (jorgsowa)
    * Fixed bug [GH-22441](https://github.com/php/php-src/issues/22441) (ReflectionClass::hasProperty() and
    getProperty() ignore dynamic properties shadowing a private parent property). (iliaal)
    * Fixed bug [GH-22658](https://github.com/php/php-src/issues/22658) (ReflectionConstant::__toString() with
    a string value with null bytes truncates output). (DanielEScherzer)
    * Fixed bug [GH-22681](https://github.com/php/php-src/issues/22681) (Reflection*::__toString() truncates
    on null bytes). (DanielEScherzer)

    **Session:**

    * Fixed bug [GH-21314](https://github.com/php/php-src/issues/21314) (Different session garbage collector
    behavior between PHP 8.3 and PHP 8.5). (jorgsowa)

    **SPL:**

    * Fix class_parents for classes with leading slash in non-autoload mode. (jorgsowa)
    * Ignore leading back-slash in class_parents(), class_implements(), and class_uses(). (jorgsowa)
    * Fixed bug [GH-16217](https://github.com/php/php-src/issues/16217) (SplFileObject::fputcsv() on an
    uninitialized object segfaults). (iliaal)

    **Standard:**

    * Fixed bug [GH-22360](https://github.com/php/php-src/issues/22360) (convert.base64-encode corruption on
    incremental flush). (David Carlier)
    * Fixed bug [GH-22395](https://github.com/php/php-src/issues/22395) (base_convert() outputs at most 64
    characters). (Weilin Du)
    * Fixed integer overflow in getimagesize() and getimagesizefromstring() when parsing an IFF chunk with a
    size of INT_MAX. (David Carlier, Weilin Du)
    * Fixed bug [GH-22678](https://github.com/php/php-src/issues/22678) (Use-after-free in array_multisort()
    when the comparator mutates the array being sorted). (azchin, iliaal)

    **Streams:**

    * Fixed bug [GH-22617](https://github.com/php/php-src/issues/22617) (persistent stream keys truncated at
    null bytes, causing distinct abstract unix domain sockets to share a resource). (David Carlier)



Tenable has extracted the preceding description block directly from the Fedora security advisory.

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://bodhi.fedoraproject.org/updates/FEDORA-2026-d755ca77c4");
  script_set_attribute(attribute:"solution", value:
"Update the affected php package.");
  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:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_supplemental", value:"CVSS:4.0/AU:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:P");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-17544");

  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:"2026/07/28");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/07/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/08/07");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:43");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:php");
  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:"Fedora Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include('rpm2.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_product = get_kb_item('installed_os/local/SSH/0/product');
if (isnull(os_product) || 'Fedora' >!< os_product) audit(AUDIT_OS_NOT, 'Fedora');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'Fedora');
if (! preg(pattern:"^43([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'Fedora 43', 'Fedora ' + os_version);

if (!get_kb_item('Host/RedHat/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Fedora', cpu);

var constraints = [
  {
    'release': '43',
    'pkgs': [
      {'reference':'php-8.4.24-1.fc43', 'rpm_spec_vers_cmp':TRUE}
    ]
  }
];

var os_release = get_one_kb_item('installed_os/local/SSH/0/release');
var os_sp = get_one_kb_item('Host/*/minor_release');

var flag = 0;
var reference;
var sp;
var _cpu;
var el_string;
var rpm_spec_vers_cmp;
var epoch;
var allowmaj;
var exists_check;
var cves;
foreach var constraint ( constraints ) {
  # Check that the target release is equal to the affected release
  if (!empty_or_null(constraint['release'])){
    if (constraint['release'] != os_release) continue;
  }
  if (!empty_or_null(constraint['sp'])){
    if (constraint['sp'] != os_sp) continue;
  }
  foreach var pkg ( constraint['pkgs'] ) {
    reference = NULL;
    sp = NULL;
    _cpu = NULL;
    el_string = NULL;
    rpm_spec_vers_cmp = NULL;
    epoch = NULL;
    allowmaj = NULL;
    exists_check = NULL;
    cves = NULL;
    if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];
    if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
    if (!empty_or_null(pkg['cpu'])) _cpu = pkg['cpu'];
    if (!empty_or_null(pkg['el_string'])) el_string = pkg['el_string'];
    if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
    if (!empty_or_null(pkg['epoch'])) epoch = pkg['epoch'];
    if (!empty_or_null(pkg['allowmaj'])) allowmaj = pkg['allowmaj'];
    if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
    if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
    if (reference &&
        ## (no known rpm to check OR known rpm_exists)
        (!exists_check || rpm_exists(rpm:exists_check)) &&
        rpm_check(sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj, cves:cves)) flag++;
  }
}

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'php');
}