Mageia: Security Advisory (MGASA-2021-0307)

# 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("1.3.6.1.4.1.25623.1.1.10.2021.0307");
  script_cve_id("CVE-2021-25217");
  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:"3.3");
  script_tag(name:"cvss_base_vector", value:"AV:A/AC:L/Au:N/C:N/I:N/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2021-06-09 16:47:32 +0000 (Wed, 09 Jun 2021)");

  script_name("Mageia: Security Advisory (MGASA-2021-0307)");
  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=MAGEIA(7|8)");

  script_xref(name:"Advisory-ID", value:"MGASA-2021-0307");
  script_xref(name:"URL", value:"https://advisories.mageia.org/MGASA-2021-0307.html");
  script_xref(name:"URL", value:"https://bugs.mageia.org/show_bug.cgi?id=28976");
  script_xref(name:"URL", value:"https://kb.isc.org/docs/cve-2021-25217");
  script_xref(name:"URL", value:"https://lists.fedoraproject.org/archives/list/[email protected]/thread/Z2LB42JWIV4M4WDNXX5VGIP26FEYWKIF/");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'dhcp' package(s) announced via the MGASA-2021-0307 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 the Dynamic Host Configuration Protocol (DHCP). There is a
discrepancy between the code that handles encapsulated option information
inleases transmitted 'on the wire' and the code which reads and parses lease
information after it has been written to disk storage. This flaw allows an
attacker to deliberately cause a situation where dhcpd while running in DHCPv4
or DHCPv6 mode, or the dhclient attempts to read a stored lease that contains
option information, to trigger a stack-based buffer overflow in the option
parsing code for colon-separated hex digits values. The highest threat from
this vulnerability is to data confidentiality and integrity as well as service
availability (CVE-2021-25217).");

  script_tag(name:"affected", value:"'dhcp' package(s) on Mageia 7, Mageia 8.");

  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:"dhcp", rpm:"dhcp~4.4.1~3.1.mga7", rls:"MAGEIA7"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"dhcp-client", rpm:"dhcp-client~4.4.1~3.1.mga7", rls:"MAGEIA7"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"dhcp-common", rpm:"dhcp-common~4.4.1~3.1.mga7", rls:"MAGEIA7"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"dhcp-devel", rpm:"dhcp-devel~4.4.1~3.1.mga7", rls:"MAGEIA7"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"dhcp-doc", rpm:"dhcp-doc~4.4.1~3.1.mga7", rls:"MAGEIA7"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"dhcp-relay", rpm:"dhcp-relay~4.4.1~3.1.mga7", rls:"MAGEIA7"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"dhcp-server", rpm:"dhcp-server~4.4.1~3.1.mga7", rls:"MAGEIA7"))) {
    report += res;
  }

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

if(release == "MAGEIA8") {

  if(!isnull(res = isrpmvuln(pkg:"dhcp", rpm:"dhcp~4.4.2~10.1.mga8", rls:"MAGEIA8"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"dhcp-client", rpm:"dhcp-client~4.4.2~10.1.mga8", rls:"MAGEIA8"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"dhcp-common", rpm:"dhcp-common~4.4.2~10.1.mga8", rls:"MAGEIA8"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"dhcp-devel", rpm:"dhcp-devel~4.4.2~10.1.mga8", rls:"MAGEIA8"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"dhcp-doc", rpm:"dhcp-doc~4.4.2~10.1.mga8", rls:"MAGEIA8"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"dhcp-relay", rpm:"dhcp-relay~4.4.2~10.1.mga8", rls:"MAGEIA8"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"dhcp-server", rpm:"dhcp-server~4.4.2~10.1.mga8", rls:"MAGEIA8"))) {
    report += res;
  }

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

exit(0);