AlmaLinux 10 : openssl (ALSA-2026:25237)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# AlmaLinux Security Advisory ALSA-2026:25237.
##

include('compat.inc');

if (description)
{
  script_id(320690);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/06/11");

  script_cve_id(
    "CVE-2026-7383",
    "CVE-2026-9076",
    "CVE-2026-34180",
    "CVE-2026-34181",
    "CVE-2026-34182",
    "CVE-2026-34183",
    "CVE-2026-42764",
    "CVE-2026-42766",
    "CVE-2026-42767",
    "CVE-2026-42768",
    "CVE-2026-42769",
    "CVE-2026-42770",
    "CVE-2026-45445",
    "CVE-2026-45446",
    "CVE-2026-45447"
  );
  script_xref(name:"ALSA", value:"2026:25237");
  script_xref(name:"RHSA", value:"2026:25237");

  script_name(english:"AlmaLinux 10 : openssl (ALSA-2026:25237)");

  script_set_attribute(attribute:"synopsis", value:
"The remote AlmaLinux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote AlmaLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the
ALSA-2026:25237 advisory.

    * openssl: OpenSSL: Heap buffer overflow due to signed integer overflow in Unicode output sizing
    (CVE-2026-7383)
      * openssl: OpenSSL: Denial of Service due to heap out-of-bounds read in CMS password-based decryption
    (CVE-2026-9076)
      * openssl: OpenSSL: Heap buffer over-read in ASN.1 decoding can lead to denial of service or information
    disclosure. (CVE-2026-34180)
      * openssl: PKCS#12 Files with PBMAC1 Are Accepted with Short HMAC Keys (CVE-2026-34181)
      * openssl: CMS AuthEnvelopedData Processing May Accept Forged Messages (CVE-2026-34182)
      * openssl: Unbounded Memory Growth in the QUIC PATH_CHALLENGE Handler (CVE-2026-34183)
      * openssl: NULL pointer dereference in QUIC server initial packet handling (CVE-2026-42764)
      * openssl: Possible NULL Dereference in Password-Based CMS Decryption (CVE-2026-42766)
      * openssl: NULL Pointer Dereference in CRMF EncryptedValue Decryption (CVE-2026-42767)
      * openssl: Multi-RecipientInfo Bleichenbacher Oracle in CMS_decrypt() and PKCS7_decrypt()
    (CVE-2026-42768)
      * openssl: Trust-Anchor Substitution via cert/issuer Typo in CMP rootCaKeyUpdate (CVE-2026-42769)
      * openssl: FFC-DH Peer Validation Uses Attacker-Supplied q (CVE-2026-42770)
      * openssl: AES-OCB IV Ignored on EVP_Cipher() Path (CVE-2026-45445)
      * openssl: Incorrect Tag Processing for Empty Messages in AES-GCM-SIV and AES-SIV modes (CVE-2026-45446)
      * openssl: Heap Use-After-Free in OpenSSL PKCS7_verify() (CVE-2026-45447)

Tenable has extracted the preceding description block directly from the AlmaLinux 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://errata.almalinux.org/10/ALSA-2026-25237.html");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2026:25237");
  script_set_attribute(attribute:"solution", value:
"Update the affected 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: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:H/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-45447");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2026-34182");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(1204, 130, 131, 190, 205, 295, 347, 354, 476, 770, 825);

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/06/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/06/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/06/11");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:openssl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:openssl-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:openssl-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:openssl-perl");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:10::appstream");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:10::baseos");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:10::highavailability");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:10::nfv");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:10::powertools");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:10::realtime");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:10::resilientstorage");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:10::sap");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:10::sap_hana");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:10::supplementary");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Alma Linux 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/AlmaLinux/release", "Host/AlmaLinux/rpm-list", "Host/cpu");

  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) || 'AlmaLinux' >!< os_product) audit(AUDIT_OS_NOT, 'AlmaLinux');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'AlmaLinux');
if (! preg(pattern:"^10([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'AlmaLinux 10.x', 'AlmaLinux ' + os_version);

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

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

var constraints = [
  {
    'release': '10',
    'pkgs': [
      {'reference':'openssl-3.5.5-4.el10_2.alma.1', 'cpu':'aarch64', 'el_string':'el10_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'openssl-3.5.5-4.el10_2.alma.1', 'cpu':'ppc64le', 'el_string':'el10_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'openssl-3.5.5-4.el10_2.alma.1', 'cpu':'s390x', 'el_string':'el10_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'openssl-3.5.5-4.el10_2.alma.1', 'cpu':'x86_64', 'el_string':'el10_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'openssl-3.5.5-4.el10_2.alma.1', 'cpu':'x86_64_v2', 'el_string':'el10_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'openssl-devel-3.5.5-4.el10_2.alma.1', 'cpu':'aarch64', 'el_string':'el10_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'openssl-devel-3.5.5-4.el10_2.alma.1', 'cpu':'ppc64le', 'el_string':'el10_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'openssl-devel-3.5.5-4.el10_2.alma.1', 'cpu':'s390x', 'el_string':'el10_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'openssl-devel-3.5.5-4.el10_2.alma.1', 'cpu':'x86_64', 'el_string':'el10_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'openssl-devel-3.5.5-4.el10_2.alma.1', 'cpu':'x86_64_v2', 'el_string':'el10_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'openssl-libs-3.5.5-4.el10_2.alma.1', 'cpu':'aarch64', 'el_string':'el10_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'openssl-libs-3.5.5-4.el10_2.alma.1', 'cpu':'ppc64le', 'el_string':'el10_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'openssl-libs-3.5.5-4.el10_2.alma.1', 'cpu':'s390x', 'el_string':'el10_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'openssl-libs-3.5.5-4.el10_2.alma.1', 'cpu':'x86_64', 'el_string':'el10_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'openssl-libs-3.5.5-4.el10_2.alma.1', 'cpu':'x86_64_v2', 'el_string':'el10_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'openssl-perl-3.5.5-4.el10_2.alma.1', 'cpu':'aarch64', 'el_string':'el10_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'openssl-perl-3.5.5-4.el10_2.alma.1', 'cpu':'ppc64le', 'el_string':'el10_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'openssl-perl-3.5.5-4.el10_2.alma.1', 'cpu':'s390x', 'el_string':'el10_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'openssl-perl-3.5.5-4.el10_2.alma.1', 'cpu':'x86_64', 'el_string':'el10_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'openssl-perl-3.5.5-4.el10_2.alma.1', 'cpu':'x86_64_v2', 'el_string':'el10_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'}
    ]
  }
];

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, 'openssl / openssl-devel / openssl-libs / openssl-perl');
}