Huawei EulerOS: Security Advisory for gnutls (EulerOS-SA-2025-2576)

# SPDX-FileCopyrightText: 2025 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.1.2.2025.2576");
  script_cve_id("CVE-2025-32988", "CVE-2025-32990", "CVE-2025-6395");
  script_tag(name:"creation_date", value:"2025-12-19 04:38:02 +0000 (Fri, 19 Dec 2025)");
  script_version("2025-12-19T05:45:49+0000");
  script_tag(name:"last_modification", value:"2025-12-19 05:45:49 +0000 (Fri, 19 Dec 2025)");
  script_tag(name:"cvss_base", value:"8.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:P/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2025-08-15 19:32:53 +0000 (Fri, 15 Aug 2025)");

  script_name("Huawei EulerOS: Security Advisory for gnutls (EulerOS-SA-2025-2576)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2025 Greenbone AG");
  script_family("Huawei EulerOS Local Security Checks");
  script_dependencies("gb_huawei_euleros_consolidation.nasl");
  script_mandatory_keys("ssh/login/euleros", "ssh/login/rpms", re:"ssh/login/release=EULEROSVIRT\-2\.13\.0");

  script_xref(name:"Advisory-ID", value:"EulerOS-SA-2025-2576");
  script_xref(name:"URL", value:"https://developer.huaweicloud.com/intl/en-us/euleros/securitydetail.html?secId=EulerOS-SA-2025-2576");

  script_tag(name:"summary", value:"The remote host is missing an update for the Huawei EulerOS 'gnutls' package(s) announced via the EulerOS-SA-2025-2576 advisory.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");

  script_tag(name:"insight", value:"A flaw was found in GnuTLS. A double-free vulnerability exists in GnuTLS due to incorrect ownership handling in the export logic of Subject Alternative Name (SAN) entries containing an otherName. If the type-id OID is invalid or malformed, GnuTLS will call asn1_delete_structure() on an ASN.1 node it does not own, leading to a double-free condition when the parent function or caller later attempts to free the same structure.

This vulnerability can be triggered using only public GnuTLS APIs and may result in denial of service or memory corruption, depending on allocator behavior.(CVE-2025-32988)

A heap-buffer-overflow (off-by-one) flaw was found in the GnuTLS software in the template parsing logic within the certtool utility. When it reads certain settings from a template file, it allows an attacker to cause an out-of-bounds (OOB) NULL pointer write, resulting in memory corruption and a denial-of-service (DoS) that could potentially crash the system.(CVE-2025-32990)

A NULL pointer dereference flaw was found in the GnuTLS software in _gnutls_figure_common_ciphersuite().(CVE-2025-6395)");

  script_tag(name:"affected", value:"'gnutls' package(s) on Huawei EulerOS Virtualization release 2.13.0.");

  script_tag(name:"solution", value:"Please install the updated package(s).");

  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"qod_type", value:"package");

  exit(0);
}

include("revisions-lib.inc");
include("pkg-lib-rpm.inc");

release = rpm_get_ssh_release();
if(!release)
  exit(0);

res = "";
report = "";

if(release == "EULEROSVIRT-2.13.0") {

  if(!isnull(res = isrpmvuln(pkg:"gnutls", rpm:"gnutls~3.7.2~10.h8.eulerosv2r13", rls:"EULEROSVIRT-2.13.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"gnutls-utils", rpm:"gnutls-utils~3.7.2~10.h8.eulerosv2r13", rls:"EULEROSVIRT-2.13.0"))) {
    report += res;
  }

  if(report != "") {
    security_message(data:report);
  } else if(__pkg_match) {
    exit(99);
  }
  exit(0);
}

exit(0);