Debian: Security Advisory (DLA-2807-1)

# SPDX-FileCopyrightText: 2021 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("1.3.6.1.4.1.25623.1.0.892807");
  script_cve_id("CVE-2018-5740", "CVE-2021-25219");
  script_tag(name:"creation_date", value:"2021-11-02 02:00:22 +0000 (Tue, 02 Nov 2021)");
  script_version("2024-02-02T05:06:07+0000");
  script_tag(name:"last_modification", value:"2024-02-02 05:06:07 +0000 (Fri, 02 Feb 2024)");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/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:"2021-11-03 13:18:39 +0000 (Wed, 03 Nov 2021)");

  script_name("Debian: Security Advisory (DLA-2807-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2021 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=DEB9");

  script_xref(name:"Advisory-ID", value:"DLA-2807-1");
  script_xref(name:"URL", value:"https://www.debian.org/lts/security/2021/DLA-2807-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/bind9");
  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 'bind9' package(s) announced via the DLA-2807-1 advisory.");

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

  script_tag(name:"insight", value:"CVE-2021-25219

Kishore Kumar Kothapalli discovered that the lame server cache in BIND, a DNS server implementation, can be abused by an attacker to significantly degrade resolver performance, resulting in denial of service (large delays for responses for client queries and DNS timeouts on client hosts).

CVE-2018-5740

'deny-answer-aliases' is a little-used feature intended to help recursive server operators protect end users against DNS rebinding attacks, a potential method of circumventing the security model used by client browsers. However, a defect in this feature makes it easy, when the feature is in use, to experience an assertion failure in name.c.

For Debian 9 stretch, these problems have been fixed in version 1:9.10.3.dfsg.P4-12.3+deb9u10.

We recommend that you upgrade your bind9 packages.

For the detailed security status of bind9 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:"'bind9' package(s) on Debian 9.");

  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 == "DEB9") {

  if(!isnull(res = isdpkgvuln(pkg:"bind9", ver:"1:9.10.3.dfsg.P4-12.3+deb9u10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"bind9-doc", ver:"1:9.10.3.dfsg.P4-12.3+deb9u10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"bind9-host", ver:"1:9.10.3.dfsg.P4-12.3+deb9u10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"bind9utils", ver:"1:9.10.3.dfsg.P4-12.3+deb9u10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"dnsutils", ver:"1:9.10.3.dfsg.P4-12.3+deb9u10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"host", ver:"1:9.10.3.dfsg.P4-12.3+deb9u10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libbind-dev", ver:"1:9.10.3.dfsg.P4-12.3+deb9u10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libbind-export-dev", ver:"1:9.10.3.dfsg.P4-12.3+deb9u10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libbind9-140", ver:"1:9.10.3.dfsg.P4-12.3+deb9u10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libdns-export162", ver:"1:9.10.3.dfsg.P4-12.3+deb9u10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libdns-export162-udeb", ver:"1:9.10.3.dfsg.P4-12.3+deb9u10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libdns162", ver:"1:9.10.3.dfsg.P4-12.3+deb9u10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libirs-export141", ver:"1:9.10.3.dfsg.P4-12.3+deb9u10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libirs-export141-udeb", ver:"1:9.10.3.dfsg.P4-12.3+deb9u10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libirs141", ver:"1:9.10.3.dfsg.P4-12.3+deb9u10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libisc-export160", ver:"1:9.10.3.dfsg.P4-12.3+deb9u10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libisc-export160-udeb", ver:"1:9.10.3.dfsg.P4-12.3+deb9u10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libisc160", ver:"1:9.10.3.dfsg.P4-12.3+deb9u10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libisccc-export140", ver:"1:9.10.3.dfsg.P4-12.3+deb9u10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libisccc-export140-udeb", ver:"1:9.10.3.dfsg.P4-12.3+deb9u10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libisccc140", ver:"1:9.10.3.dfsg.P4-12.3+deb9u10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libisccfg-export140", ver:"1:9.10.3.dfsg.P4-12.3+deb9u10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libisccfg-export140-udeb", ver:"1:9.10.3.dfsg.P4-12.3+deb9u10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libisccfg140", ver:"1:9.10.3.dfsg.P4-12.3+deb9u10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"liblwres141", ver:"1:9.10.3.dfsg.P4-12.3+deb9u10", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"lwresd", ver:"1:9.10.3.dfsg.P4-12.3+deb9u10", rls:"DEB9"))) {
    report += res;
  }

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

exit(0);