Xerox Printers Loop with Unreachable Exit Condition (CVE-2022-23968)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(505561);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/29");

  script_cve_id("CVE-2022-23968");

  script_name(english:"Xerox Printers Loop with Unreachable Exit Condition (CVE-2022-23968)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"Xerox VersaLink devices on specific versions of firmware before
2022-01-26 allow remote attackers to brick the device via a crafted
TIFF file in an unauthenticated HTTP POST request. There is a
permanent denial of service because image parsing causes a reboot, but
image parsing is restarted as soon as the boot process finishes.
However, this boot loop can be resolved by a field technician. The
TIFF file must have an incomplete Image Directory. Affected firmware
versions include xx.42.01 and xx.50.61. NOTE: the 2022-01-24 NeoSmart
article included believed to affect all previous and later versions
as of the date of this posting but a 2022-01-26 vendor statement
reports the latest versions of firmware are not vulnerable to this
issue.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.");
  # https://neosmart.net/blog/2022/xerox-vulnerability-allows-unauthenticated-network-users-to-remotely-brick-printers/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5b2aa9b3");
  script_set_attribute(attribute:"see_also", value:"https://twitter.com/mqudsi/status/1485756915187695618");
  # https://securitydocs.business.xerox.com/wp-content/uploads/2022/01/Xerox-Security-Bulletin-XRX22-002-for-CVE-2022-23968.pdf
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?af59724f");
  script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/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:N/I:N/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-2022-23968");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(835);

  script_set_attribute(attribute:"vuln_publication_date", value:"2022/01/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/01/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/07/27");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:xerox:phaser_6510_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:xerox:versalink_b400_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:xerox:versalink_b405_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:xerox:versalink_b600_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:xerox:versalink_b605_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:xerox:versalink_b610_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:xerox:versalink_b615_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:xerox:versalink_b7025_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:xerox:versalink_b7030_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:xerox:versalink_b7035_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:xerox:versalink_c400_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:xerox:versalink_c405_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:xerox:versalink_c500_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:xerox:versalink_c505_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:xerox:versalink_c600_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:xerox:versalink_c605_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:xerox:versalink_c7000_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:xerox:versalink_c7020_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:xerox:versalink_c7025_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:xerox:versalink_c7030_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:xerox:versalink_c8000_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:xerox:versalink_c9000_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:xerox:workcentre_6515_firmware");
  script_set_attribute(attribute:"generated_plugin", value:"former");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Tenable.ot");

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

  script_dependencies("tenable_ot_api_integration.nasl");
  script_require_keys("Tenable.ot/Xerox");

  exit(0);
}


include('tenable_ot_cve_funcs.inc');

get_kb_item_or_exit('Tenable.ot/Xerox');

var asset = tenable_ot::assets::get(vendor:'Xerox');

var vuln_cpes = {
    "cpe:/o:xerox:phaser_6510_firmware" :
        {"versionEndExcluding" : "64.61.23", "family" : "Phaser"},
    "cpe:/o:xerox:workcentre_6515_firmware" :
        {"versionEndExcluding" : "65.61.23", "family" : "WorkCentre"},
    "cpe:/o:xerox:versalink_b400_firmware" :
        {"versionEndExcluding" : "37.61.23", "family" : "VersaLink"},
    "cpe:/o:xerox:versalink_b405_firmware" :
        {"versionEndExcluding" : "38.61.23", "family" : "VersaLink"},
    "cpe:/o:xerox:versalink_b600_firmware" :
        {"versionEndExcluding" : "32.61.23", "family" : "VersaLink"},
    "cpe:/o:xerox:versalink_b605_firmware" :
        {"versionEndExcluding" : "33.61.23", "family" : "VersaLink"},
    "cpe:/o:xerox:versalink_b610_firmware" :
        {"versionEndExcluding" : "32.61.23", "family" : "VersaLink"},
    "cpe:/o:xerox:versalink_b615_firmware" :
        {"versionEndExcluding" : "33.61.23", "family" : "VersaLink"},
    "cpe:/o:xerox:versalink_b7025_firmware" :
        {"versionEndExcluding" : "58.61.23", "family" : "VersaLink"},
    "cpe:/o:xerox:versalink_b7030_firmware" :
        {"versionEndExcluding" : "58.61.23", "family" : "VersaLink"},
    "cpe:/o:xerox:versalink_b7035_firmware" :
        {"versionEndExcluding" : "58.61.23", "family" : "VersaLink"},
    "cpe:/o:xerox:versalink_c400_firmware" :
        {"versionEndExcluding" : "67.61.23", "family" : "VersaLink"},
    "cpe:/o:xerox:versalink_c405_firmware" :
        {"versionEndExcluding" : "68.61.23", "family" : "VersaLink"},
    "cpe:/o:xerox:versalink_c500_firmware" :
        {"versionEndExcluding" : "61.61.23", "family" : "VersaLink"},
    "cpe:/o:xerox:versalink_c505_firmware" :
        {"versionEndExcluding" : "62.61.23", "family" : "VersaLink"},
    "cpe:/o:xerox:versalink_c600_firmware" :
        {"versionEndExcluding" : "61.61.23", "family" : "VersaLink"},
    "cpe:/o:xerox:versalink_c605_firmware" :
        {"versionEndExcluding" : "62.61.23", "family" : "VersaLink"},
    "cpe:/o:xerox:versalink_c7000_firmware" :
        {"versionEndExcluding" : "56.61.23", "family" : "VersaLink"},
    "cpe:/o:xerox:versalink_c7020_firmware" :
        {"versionEndExcluding" : "57.61.23", "family" : "VersaLink"},
    "cpe:/o:xerox:versalink_c7025_firmware" :
        {"versionEndExcluding" : "57.61.23", "family" : "VersaLink"},
    "cpe:/o:xerox:versalink_c7030_firmware" :
        {"versionEndExcluding" : "57.61.23", "family" : "VersaLink"},
    "cpe:/o:xerox:versalink_c8000_firmware" :
        {"versionEndExcluding" : "70.61.23", "family" : "VersaLink"},
    "cpe:/o:xerox:versalink_c9000_firmware" :
        {"versionEndExcluding" : "70.61.23", "family" : "VersaLink"}
};

tenable_ot::cve::compare_and_report(asset:asset, cpes:vuln_cpes, severity:SECURITY_HOLE);