Ubuntu: Security Advisory (USN-7564-1)

# 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("1.3.6.1.4.1.25623.1.1.12.2025.7564.1");
  script_cve_id("CVE-2025-0620");
  script_tag(name:"creation_date", value:"2025-06-11 04:09:16 +0000 (Wed, 11 Jun 2025)");
  script_version("2025-08-15T05:40:49+0000");
  script_tag(name:"last_modification", value:"2025-08-15 05:40:49 +0000 (Fri, 15 Aug 2025)");
  script_tag(name:"cvss_base", value:"6.1");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:M/C:C/I:N/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2025-08-13 15:12:08 +0000 (Wed, 13 Aug 2025)");

  script_name("Ubuntu: Security Advisory (USN-7564-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2025 Greenbone AG");
  script_family("Ubuntu Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/ubuntu_linux", "ssh/login/packages", re:"ssh/login/release=UBUNTU25\.04");

  script_xref(name:"Advisory-ID", value:"USN-7564-1");
  script_xref(name:"URL", value:"https://ubuntu.com/security/notices/USN-7564-1");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'samba' package(s) announced via the USN-7564-1 advisory.");

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

  script_tag(name:"insight", value:"It was discovered that Samba incorrectly handled certain group membership
changes when using Kerberos authentication. A remote user could possibly
use this issue to continue to access resources after being removed by an
administrator.");

  script_tag(name:"affected", value:"'samba' package(s) on Ubuntu 25.04.");

  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-deb.inc");

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

res = "";
report = "";

if(release == "UBUNTU25.04") {

  if(!isnull(res = isdpkgvuln(pkg:"samba", ver:"2:4.21.4+dfsg-1ubuntu3.1", rls:"UBUNTU25.04"))) {
    report += res;
  }

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

exit(0);