Mageia: Security Advisory (MGASA-2021-0304)

# SPDX-FileCopyrightText: 2022 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("1.3.6.1.4.1.25623.1.1.10.2021.0304");
  script_cve_id("CVE-2020-13776");
  script_tag(name:"creation_date", value:"2022-01-28 10:58:44 +0000 (Fri, 28 Jan 2022)");
  script_version("2024-02-02T05:06:09+0000");
  script_tag(name:"last_modification", value:"2024-02-02 05:06:09 +0000 (Fri, 02 Feb 2024)");
  script_tag(name:"cvss_base", value:"6.2");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:H/Au:N/C:C/I:C/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2020-06-19 14:12:26 +0000 (Fri, 19 Jun 2020)");

  script_name("Mageia: Security Advisory (MGASA-2021-0304)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2022 Greenbone AG");
  script_family("Mageia Linux Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/mageia_linux", "ssh/login/release", re:"ssh/login/release=MAGEIA7");

  script_xref(name:"Advisory-ID", value:"MGASA-2021-0304");
  script_xref(name:"URL", value:"https://advisories.mageia.org/MGASA-2021-0304.html");
  script_xref(name:"URL", value:"https://bugs.mageia.org/show_bug.cgi?id=27043");
  script_xref(name:"URL", value:"https://access.redhat.com/errata/RHSA-2021:1611");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'systemd' package(s) announced via the MGASA-2021-0304 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 systemd, where it mishandles numerical usernames beginning
with decimal digits, or '0x' followed by hexadecimal digits. When the usernames
are used by systemd, for example in service units, an unexpected user may be
used instead. In some particular configurations, this flaw allows local
attackers to elevate their privileges (CVE-2020-13776).");

  script_tag(name:"affected", value:"'systemd' package(s) on Mageia 7.");

  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 == "MAGEIA7") {

  if(!isnull(res = isrpmvuln(pkg:"lib64systemd0", rpm:"lib64systemd0~241~8.6.mga7", rls:"MAGEIA7"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"lib64udev-devel", rpm:"lib64udev-devel~241~8.6.mga7", rls:"MAGEIA7"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"lib64udev1", rpm:"lib64udev1~241~8.6.mga7", rls:"MAGEIA7"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libsystemd0", rpm:"libsystemd0~241~8.6.mga7", rls:"MAGEIA7"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libudev-devel", rpm:"libudev-devel~241~8.6.mga7", rls:"MAGEIA7"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libudev1", rpm:"libudev1~241~8.6.mga7", rls:"MAGEIA7"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"nss-myhostname", rpm:"nss-myhostname~241~8.6.mga7", rls:"MAGEIA7"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"systemd", rpm:"systemd~241~8.6.mga7", rls:"MAGEIA7"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"systemd-devel", rpm:"systemd-devel~241~8.6.mga7", rls:"MAGEIA7"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"systemd-tests", rpm:"systemd-tests~241~8.6.mga7", rls:"MAGEIA7"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"systemd-units", rpm:"systemd-units~241~8.6.mga7", rls:"MAGEIA7"))) {
    report += res;
  }

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

exit(0);