Debian: Security Advisory (DLA-3146-1)

# 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("1.3.6.1.4.1.25623.1.0.893146");
  script_cve_id("CVE-2022-2928", "CVE-2022-2929");
  script_tag(name:"creation_date", value:"2022-10-12 01:00:11 +0000 (Wed, 12 Oct 2022)");
  script_version("2024-02-02T05:06:08+0000");
  script_tag(name:"last_modification", value:"2024-02-02 05:06:08 +0000 (Fri, 02 Feb 2024)");
  script_tag(name:"cvss_base", value:"6.1");
  script_tag(name:"cvss_base_vector", value:"AV:A/AC:L/Au:N/C:N/I:N/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2022-10-13 13:33:13 +0000 (Thu, 13 Oct 2022)");

  script_name("Debian: Security Advisory (DLA-3146-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2022 Greenbone AG");
  script_family("Debian Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/debian_linux", "ssh/login/packages", re:"ssh/login/release=DEB10");

  script_xref(name:"Advisory-ID", value:"DLA-3146-1");
  script_xref(name:"URL", value:"https://www.debian.org/lts/security/2022/DLA-3146-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/isc-dhcp");
  script_xref(name:"URL", value:"https://wiki.debian.org/LTS");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'isc-dhcp' package(s) announced via the DLA-3146-1 advisory.");

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

  script_tag(name:"insight", value:"Several vulnerabilities have been discovered in the ISC DHCP client, relay and server.

CVE-2022-2928

It was discovered that the DHCP server does not correctly perform option reference counting when configured with 'allow leasequery,'. A remote attacker can take advantage of this flaw to cause a denial of service (daemon crash).

CVE-2022-2929

It was discovered that the DHCP server is prone to a memory leak flaw when handling contents of option 81 (fqdn) data received in a DHCP packet. A remote attacker can take advantage of this flaw to cause DHCP servers to consume resources, resulting in denial of service.

For Debian 10 buster, these problems have been fixed in version 4.4.1-2+deb10u2.

We recommend that you upgrade your isc-dhcp packages.

For the detailed security status of isc-dhcp please refer to its security tracker page at: [link moved to references]

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: [link moved to references]");

  script_tag(name:"affected", value:"'isc-dhcp' package(s) on Debian 10.");

  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 == "DEB10") {

  if(!isnull(res = isdpkgvuln(pkg:"isc-dhcp-client", ver:"4.4.1-2+deb10u2", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"isc-dhcp-client-ddns", ver:"4.4.1-2+deb10u2", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"isc-dhcp-client-udeb", ver:"4.4.1-2+deb10u2", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"isc-dhcp-common", ver:"4.4.1-2+deb10u2", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"isc-dhcp-dev", ver:"4.4.1-2+deb10u2", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"isc-dhcp-relay", ver:"4.4.1-2+deb10u2", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"isc-dhcp-server", ver:"4.4.1-2+deb10u2", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"isc-dhcp-server-ldap", ver:"4.4.1-2+deb10u2", rls:"DEB10"))) {
    report += res;
  }

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

exit(0);