FreeBSD : OpenSSL -- Vector register corruption on PowerPC (8337251b-b07b-11ee-b0d7-84a93843eb75)

#%NASL_MIN_LEVEL 80900
#
# (C) Tenable, Inc.
#
# @NOAGENT@
#
# The descriptive text and package checks in this plugin were
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2021 Jacques Vidrine and contributors
#
# Redistribution and use in source (VuXML) and 'compiled' forms (SGML,
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# are permitted provided that the following conditions are met:
# 1. Redistributions of source code (VuXML) must retain the above
#    copyright notice, this list of conditions and the following
#    disclaimer as the first lines of this file unmodified.
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#    published online in any format, converted to PDF, PostScript,
#    RTF and other formats) must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer
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# THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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#

include('compat.inc');

if (description)
{
  script_id(187961);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/11");

  script_cve_id("CVE-2023-6129");
  script_xref(name:"IAVA", value:"2024-A-0121-S");

  script_name(english:"FreeBSD : OpenSSL -- Vector register corruption on PowerPC (8337251b-b07b-11ee-b0d7-84a93843eb75)");

  script_set_attribute(attribute:"synopsis", value:
"The remote FreeBSD host is missing one or more security-related updates.");
  script_set_attribute(attribute:"description", value:
"The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a
vulnerability as referenced in the 8337251b-b07b-11ee-b0d7-84a93843eb75 advisory.

  - Issue summary: The POLY1305 MAC (message authentication code) implementation contains a bug that might
    corrupt the internal state of applications running on PowerPC CPU based platforms if the CPU provides
    vector instructions. Impact summary: If an attacker can influence whether the POLY1305 MAC algorithm is
    used, the application state might be corrupted with various application dependent consequences. The
    POLY1305 MAC (message authentication code) implementation in OpenSSL for PowerPC CPUs restores the
    contents of vector registers in a different order than they are saved. Thus the contents of some of these
    vector registers are corrupted when returning to the caller. The vulnerable code is used only on newer
    PowerPC processors supporting the PowerISA 2.07 instructions. The consequences of this kind of internal
    application state corruption can be various - from no consequences, if the calling application does not
    depend on the contents of non-volatile XMM registers at all, to the worst consequences, where the attacker
    could get complete control of the application process. However unless the compiler uses the vector
    registers for storing pointers, the most likely consequence, if any, would be an incorrect result of some
    application dependent calculations or a crash leading to a denial of service. The POLY1305 MAC algorithm
    is most frequently used as part of the CHACHA20-POLY1305 AEAD (authenticated encryption with associated
    data) algorithm. The most common usage of this AEAD cipher is with TLS protocol versions 1.2 and 1.3. If
    this cipher is enabled on the server a malicious client can influence whether this AEAD cipher is used.
    This implies that TLS server applications using OpenSSL can be potentially impacted. However we are
    currently not aware of any concrete application that would be affected by this issue therefore we consider
    this a Low severity security issue. (CVE-2023-6129)

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://www.openssl.org/news/secadv/20240109.txt");
  # https://vuxml.freebsd.org/freebsd/8337251b-b07b-11ee-b0d7-84a93843eb75.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?79df3696");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:N/I:P/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:H/PR:N/UI:N/S:U/C:N/I:L/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-2023-6129");

  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:"2024/01/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/01/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/01/11");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:openssl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:openssl-quictls");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:openssl31");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:openssl31-quictls");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:openssl32");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");
  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:"FreeBSD 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/FreeBSD/release", "Host/FreeBSD/pkg_info");

  exit(0);
}


include("freebsd_package.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD");
if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING);


var flag = 0;

var packages = [
    'openssl-quictls<3.0.12_2',
    'openssl31-quictls<3.1.4_2',
    'openssl31<3.1.4_2',
    'openssl32<3.2.0_1',
    'openssl<3.0.12_2,1'
];

foreach var package( packages ) {
    if (pkg_test(save_report:TRUE, pkg: package)) flag++;
}

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : pkg_report_get()
  );
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");