EulerOS Virtualization 2.13.1 : glibc (EulerOS-SA-2026-2127)

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

include('compat.inc');

if (description)
{
  script_id(319419);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/06/06");

  script_cve_id("CVE-2025-15281", "CVE-2026-0861", "CVE-2026-0915");

  script_name(english:"EulerOS Virtualization 2.13.1 : glibc (EulerOS-SA-2026-2127)");

  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 glibc packages installed, the EulerOS Virtualization installation on the remote host is
affected by the following vulnerabilities :

    Passing too large an alignment to the memalign suite of functions (memalign, posix_memalign,
    aligned_alloc) in the GNU C Library version 2.30 to 2.42 may result in an integer overflow, which could
    consequently result in a heap corruption.Note that the attacker must have control over both, the size as
    well as the alignment arguments of the memalign function to be able to exploit this.  The size parameter
    must be close enough to PTRDIFF_MAX so as to overflow size_t along with the large alignment argument.
    This limits the malicious inputs for the alignment for memalign to the range [162+ 1, 163] and
    exactly 163 for posix_memalign and aligned_alloc.Typically the alignment argument passed to such
    functions is a known constrained quantity (e.g. page size, block size, struct sizes) and is not attacker
    controlled, because of which this may not be easily exploitable in practice.  An application bug could
    potentially result in the input alignment being too large, e.g. due to a different buffer overflow or
    integer overflow in the application or its dependent libraries, but that is again an uncommon usage
    pattern given typical sources of alignments.(CVE-2026-0861)

    Calling wordexp with WRDE_REUSE in conjunction with WRDE_APPEND in the GNU C Library version 2.0 to
    version 2.42 may cause the interface to return uninitialized memory in the we_wordv member, which on
    subsequent calls to wordfree may abort the process.(CVE-2025-15281)

    Calling getnetbyaddr or getnetbyaddr_r with a configured nsswitch.conf that specifies the library's DNS
    backend for networks and queries for a zero-valued network in the GNU C Library version 2.0 to version
    2.42 can leak stack contents to the configured DNS resolver.(CVE-2026-0915)

Tenable has extracted the preceding description block directly from the EulerOS Virtualization glibc 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-2026-2127
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?2bf706ae");
  script_set_attribute(attribute:"solution", value:
"Update the affected glibc packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/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-2026-0915");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2026-0861");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/01/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/06/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/06/06");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:glibc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:glibc-all-langpacks");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:glibc-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:glibc-locale-archive");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:glibc-locale-source");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libnsl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:nscd");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:2.13.1");
  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) 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/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 != "2.13.1") audit(AUDIT_OS_NOT, "EulerOS Virtualization 2.13.1");
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 ("aarch64" >!< cpu) audit(AUDIT_ARCH_NOT, "aarch64", cpu);

var flag = 0;

var pkgs = [
  "glibc-2.34-143.h42.eulerosv2r13",
  "glibc-all-langpacks-2.34-143.h42.eulerosv2r13",
  "glibc-common-2.34-143.h42.eulerosv2r13",
  "glibc-locale-archive-2.34-143.h42.eulerosv2r13",
  "glibc-locale-source-2.34-143.h42.eulerosv2r13",
  "libnsl-2.34-143.h42.eulerosv2r13",
  "nscd-2.34-143.h42.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_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, "glibc");
}