EulerOS 2.0 SP11 : rsyslog (EulerOS-SA-2026-4287)

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

include('compat.inc');

if (description)
{
  script_id(365048);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/12");

  script_cve_id("CVE-2026-19654");

  script_name(english:"EulerOS 2.0 SP11 : rsyslog (EulerOS-SA-2026-4287)");

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

    A unauthenticated remote peer may lead rsyslogd to crash due to a flaw in the optional imptcp module. A
    crafted input sequence during oversize-frame recovery can cause an invalid internal message length and
    terminate rsyslogd. No confidentiality or integrity impact, privilege escalation, or code execution has
    been identified. imtcp and the default imptcp framing modes are not affected.(CVE-2026-19654)

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

Note that Nessus has not tested for this issue 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-2026-4287
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?69f7469b");
  script_set_attribute(attribute:"solution", value:
"Update the affected rsyslog packages.");
  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:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-19654");

  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:"2026/08/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/10/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/12");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:rsyslog");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:rsyslog-crypto");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:rsyslog-elasticsearch");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:rsyslog-gnutls");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:rsyslog-gssapi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:rsyslog-help");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:rsyslog-mmaudit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:rsyslog-mmjsonparse");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:rsyslog-mysql");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0");
  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) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info2.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/sp");
  script_exclude_keys("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 (_release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP11");

var sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(11)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP11");

if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP11", "EulerOS UVP " + uvp);

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 = [
  "rsyslog-8.2110.0-12.h12.eulerosv2r11",
  "rsyslog-crypto-8.2110.0-12.h12.eulerosv2r11",
  "rsyslog-elasticsearch-8.2110.0-12.h12.eulerosv2r11",
  "rsyslog-gnutls-8.2110.0-12.h12.eulerosv2r11",
  "rsyslog-gssapi-8.2110.0-12.h12.eulerosv2r11",
  "rsyslog-help-8.2110.0-12.h12.eulerosv2r11",
  "rsyslog-mmaudit-8.2110.0-12.h12.eulerosv2r11",
  "rsyslog-mmjsonparse-8.2110.0-12.h12.eulerosv2r11",
  "rsyslog-mysql-8.2110.0-12.h12.eulerosv2r11"
];

foreach (var pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"11", 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, "rsyslog");
}