EulerOS Virtualization 2.13.0 : vim (EulerOS-SA-2025-2185)

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

include('compat.inc');

if (description)
{
  script_id(265120);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/09/16");

  script_cve_id("CVE-2025-26603", "CVE-2025-29768");

  script_name(english:"EulerOS Virtualization 2.13.0 : vim (EulerOS-SA-2025-2185)");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS Virtualization host is missing multiple security updates.");
  script_set_attribute(attribute:"description", value:
"According to the versions of the vim packages installed, the EulerOS Virtualization installation on the remote host is
affected by the following vulnerabilities :

    Vim is a greatly improved version of the good old UNIX editor Vi. Vim allows to redirect screen messages
    using the `:redir` ex command to register, variables and files. It also allows to show the contents of
    registers using the `:registers` or `:display` ex command. When redirecting the output of `:display` to a
    register, Vim will free the register content before storing the new content in the register. Now when
    redirecting the `:display` command to a register that is being displayed, Vim will free the content while
    shortly afterwards trying to access it, which leads to a use-after-free. Vim pre 9.1.1115 checks in the
    ex_display() function, that it does not try to redirect to a register while displaying this register at
    the same time. However this check is not complete, and so Vim does not check the `+` and `*` registers
    (which typically donate the X11/clipboard registers, and when a clipboard connection is not possible will
    fall back to use register 0 instead. In Patch 9.1.1115 Vim will therefore skip outputting to register zero
    when trying to redirect to the clipboard registers `*` or `+`. Users are advised to upgrade. There are no
    known workarounds for this vulnerability.(CVE-2025-26603)

    Vim, a text editor, is vulnerable to potential data loss with zip.vim and special crafted zip files in
    versions prior to 9.1.1198. The impact is medium because a user must be made to view such an archive with
    Vim and then press 'x' on such a strange filename. The issue has been fixed as of Vim patch
    v9.1.1198.(CVE-2025-29768)

Tenable has extracted the preceding description block directly from the EulerOS Virtualization vim security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2025-2185
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9d0852a8");
  script_set_attribute(attribute:"solution", value:
"Update the affected vim packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:N");
  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:N/UI:R/S:U/C:L/I:L/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-2025-29768");

  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:"2025/02/18");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/09/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/09/16");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:vim-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:vim-enhanced");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:vim-filesystem");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:vim-minimal");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:2.13.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Huawei Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2025 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}

include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

var _release = get_kb_item("Host/EulerOS/release");
if (isnull(_release) || _release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
var uvp = get_kb_item("Host/EulerOS/uvp_version");
if (uvp != "2.13.0") audit(AUDIT_OS_NOT, "EulerOS Virtualization 2.13.0");
if (!get_kb_item("Host/EulerOS/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$" && "aarch64" >!< cpu && "x86" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "x86" >!< cpu) audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);

var flag = 0;

var pkgs = [
  "vim-common-9.0-23.h12.eulerosv2r13",
  "vim-enhanced-9.0-23.h12.eulerosv2r13",
  "vim-filesystem-9.0-23.h12.eulerosv2r13",
  "vim-minimal-9.0-23.h12.eulerosv2r13"
];

foreach (var pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_NOTE,
    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, "vim");
}