Siemens SCALANCE and RUGGEDCOM Improper Input Validation (CVE-2025-39865)

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

include('compat.inc');

if (description)
{
  script_id(505112);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/03/05");

  script_cve_id("CVE-2025-39865");
  script_xref(name:"ICSA", value:"26-043-06");

  script_name(english:"Siemens SCALANCE and RUGGEDCOM Improper Input Validation (CVE-2025-39865)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"In the Linux kernel, the following vulnerability has been resolved:
tee: fix NULL pointer dereference in tee_shm_put  tee_shm_put have
NULL pointer dereference:  __optee_disable_shm_cache -->         shm =
reg_pair_to_ptr(...);//shm maybe return NULL
tee_shm_free(shm); -->                 tee_shm_put(shm);//crash  Add
check in tee_shm_put to fix it.  panic log: Unable to handle kernel
paging request at virtual address 0000000000100cca Mem abort info: ESR
= 0x0000000096000004 EC = 0x25: DABT (current EL), IL = 32 bits SET =
0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x04: level 0 translation fault
Data abort info: ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000 CM = 0,
WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs
= 0 user pgtable: 4k pages, 48-bit VAs, pgdp=0000002049d07000
[0000000000100cca] pgd=0000000000000000, p4d=0000000000000000 Internal
error: Oops: 0000000096000004 [#1] SMP CPU: 2 PID: 14442 Comm:
systemd-sleep Tainted: P OE ------- ---- 6.6.0-39-generic #38 Source
Version: 938b255f6cb8817c95b0dd5c8c2944acfce94b07 Hardware name:
greatwall GW-001Y1A-FTH, BIOS Great Wall BIOS V3.0 10/26/2022 pstate:
80000005 (Nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc :
tee_shm_put+0x24/0x188 lr : tee_shm_free+0x14/0x28 sp :
ffff001f98f9faf0 x29: ffff001f98f9faf0 x28: ffff0020df543cc0 x27:
0000000000000000 x26: ffff001f811344a0 x25: ffff8000818dac00 x24:
ffff800082d8d048 x23: ffff001f850fcd18 x22: 0000000000000001 x21:
ffff001f98f9fb88 x20: ffff001f83e76218 x19: ffff001f83e761e0 x18:
000000000000ffff x17: 303a30303a303030 x16: 0000000000000000 x15:
0000000000000003 x14: 0000000000000001 x13: 0000000000000000 x12:
0101010101010101 x11: 0000000000000001 x10: 0000000000000001 x9 :
ffff800080e08d0c x8 : ffff001f98f9fb88 x7 : 0000000000000000 x6 :
0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 :
0000000000000000 x2 : ffff001f83e761e0 x1 : 00000000ffff001f x0 :
0000000000100cca Call trace: tee_shm_put+0x24/0x188
tee_shm_free+0x14/0x28 __optee_disable_shm_cache+0xa8/0x108
optee_shutdown+0x28/0x38 platform_shutdown+0x28/0x40
device_shutdown+0x144/0x2b0 kernel_power_off+0x3c/0x80
hibernate+0x35c/0x388 state_store+0x64/0x80 kobj_attr_store+0x14/0x28
sysfs_kf_write+0x48/0x60 kernfs_fop_write_iter+0x128/0x1c0
vfs_write+0x270/0x370 ksys_write+0x6c/0x100
__arm64_sys_write+0x20/0x30 invoke_syscall+0x4c/0x120
el0_svc_common.constprop.0+0x44/0xf0 do_el0_svc+0x24/0x38
el0_svc+0x24/0x88 el0t_64_sync_handler+0x134/0x150
el0t_64_sync+0x14c/0x15

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.");
  script_set_attribute(attribute:"see_also", value:"https://cert-portal.siemens.com/productcert/html/ssa-089022.html");
  script_set_attribute(attribute:"see_also", value:"https://support.industry.siemens.com/cs/ww/en/view/109997626/");
  script_set_attribute(attribute:"see_also", value:"https://www.cisa.gov/news-events/ics-advisories/icsa-26-043-06");
  script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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-2025-39865");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(20);

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/09/19");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/01/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/02/10");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:ruggedcom_rst2428p_firmware:3.3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_xch328_firmware:3.3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_xcm324_firmware:3.3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_xcm328_firmware:3.3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_xcm332_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_xrh334_%2824_v_dc%2c_8xfo%2c_cc%29_firmware:3.3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_xrm334_%28230_v_ac%2c_12xfo%29_firmware:3.3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_xrm334_%28230_v_ac%2c_8xfo%29_firmware:3.3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_xrm334_%28230v_ac%2c_2x10g%2c_24xsfp%2c_8xsfp%2b%29_firmware:3.3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_xrm334_%2824_v_dc%2c_12xfo%29_firmware:3.3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_xrm334_%2824_v_dc%2c_8xfo%29_firmware:3.3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_xrm334_%2824v_dc%2c_2x10g%2c_24xsfp%2c_8xsfp%2b%29_firmware:3.3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_xrm334_%282x230_v_ac%2c_12xfo%29_firmware:3.3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_xrm334_%282x230_v_ac%2c_8xfo%29_firmware:3.3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_xrm334_%282x230v_ac%2c_2x10g%2c_24xsfp%2c_8xsfp%2b%29_firmware:3.3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_xc-300_series_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_xr-300_series_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_xc-400_series_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_xr-500wg_series_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_xr-500_series_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/Siemens");

  exit(0);
}


include('tenable_ot_cve_funcs.inc');

get_kb_item_or_exit('Tenable.ot/Siemens');

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

var vuln_cpes = {
    "cpe:/o:siemens:ruggedcom_rst2428p_firmware:3.3" :
        {"versionEndExcluding" : "3.3", "family" : "RuggedCom", "orderNumbers" : ['6GK6242-6PA00']},
    "cpe:/o:siemens:scalance_xch328_firmware:3.3" :
        {"versionEndExcluding" : "3.3", "family" : "SCALANCEX300", "orderNumbers" : ['6GK5328-4TS01-2EC2']},
    "cpe:/o:siemens:scalance_xcm324_firmware:3.3" :
        {"versionEndExcluding" : "3.3", "family" : "SCALANCEX300", "orderNumbers" : ['6GK5324-8TS01-2AC2']},
    "cpe:/o:siemens:scalance_xcm328_firmware:3.3" :
        {"versionEndExcluding" : "3.3", "family" : "SCALANCEX300", "orderNumbers" : ['6GK5328-4TS01-2AC2']},
    "cpe:/o:siemens:scalance_xrh334_%2824_v_dc%2c_8xfo%2c_cc%29_firmware:3.3" :
        {"versionEndExcluding" : "3.3", "family" : "SCALANCEX300", "orderNumbers" : ['6GK5334-2TS01-2ER3']},
    "cpe:/o:siemens:scalance_xrm334_%28230_v_ac%2c_12xfo%29_firmware:3.3" :
        {"versionEndExcluding" : "3.3", "family" : "SCALANCEX300", "orderNumbers" : ['6GK5334-3TS01-3AR3']},
    "cpe:/o:siemens:scalance_xrm334_%28230_v_ac%2c_8xfo%29_firmware:3.3" :
        {"versionEndExcluding" : "3.3", "family" : "SCALANCEX300", "orderNumbers" : ['6GK5334-2TS01-3AR3']},
    "cpe:/o:siemens:scalance_xrm334_%28230v_ac%2c_2x10g%2c_24xsfp%2c_8xsfp%2b%29_firmware:3.3" :
        {"versionEndExcluding" : "3.3", "family" : "SCALANCEX300", "orderNumbers" : ['6GK5334-5TS01-3AR3']},
    "cpe:/o:siemens:scalance_xrm334_%2824_v_dc%2c_12xfo%29_firmware:3.3" :
        {"versionEndExcluding" : "3.3", "family" : "SCALANCEX300", "orderNumbers" : ['6GK5334-3TS01-2AR3']},
    "cpe:/o:siemens:scalance_xrm334_%2824_v_dc%2c_8xfo%29_firmware:3.3" :
        {"versionEndExcluding" : "3.3", "family" : "SCALANCEX300", "orderNumbers" : ['6GK5334-2TS01-2AR3']},
    "cpe:/o:siemens:scalance_xrm334_%2824v_dc%2c_2x10g%2c_24xsfp%2c_8xsfp%2b%29_firmware:3.3" :
        {"versionEndExcluding" : "3.3", "family" : "SCALANCEX300", "orderNumbers" : ['6GK5334-5TS01-2AR3']},
    "cpe:/o:siemens:scalance_xrm334_%282x230_v_ac%2c_12xfo%29_firmware:3.3" :
        {"versionEndExcluding" : "3.3", "family" : "SCALANCEX300", "orderNumbers" : ['6GK5334-3TS01-4AR3']},
    "cpe:/o:siemens:scalance_xrm334_%282x230_v_ac%2c_8xfo%29_firmware:3.3" :
        {"versionEndExcluding" : "3.3", "family" : "SCALANCEX300", "orderNumbers" : ['6GK5334-2TS01-4AR3']},
    "cpe:/o:siemens:scalance_xrm334_%282x230v_ac%2c_2x10g%2c_24xsfp%2c_8xsfp%2b%29_firmware:3.3" :
        {"versionEndExcluding" : "3.3", "family" : "SCALANCEX300", "orderNumbers" : ['6GK5334-5TS01-4AR3']},
    "cpe:/o:siemens:scalance_xcm332_firmware" :
        {"versionEndExcluding" : "3.3", "family" : "SCALANCEX300", "orderNumbers" : ['6GK5332-0GA01-2AC2']},
    "cpe:/o:siemens:scalance_xc-300_series_firmware" :
        {"versionEndExcluding" : "3.3", "family" : "SCALANCEX300"},
    "cpe:/o:siemens:scalance_xr-300_series_firmware" :
        {"versionEndExcluding" : "3.3", "family" : "SCALANCEX300"},
    "cpe:/o:siemens:scalance_xc-400_series_firmware" :
        {"versionEndExcluding" : "3.3", "family" : "SCALANCEX400"},
    "cpe:/o:siemens:scalance_xr-500wg_series_firmware" :
        {"versionEndExcluding" : "3.3", "family" : "SCALANCEX500"},
    "cpe:/o:siemens:scalance_xr-500_series_firmware" :
        {"versionEndExcluding" : "3.3", "family" : "SCALANCEX500"}
};

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