Debian DLA-2568-1 : bind9 security update

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-2568-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(146736);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/03/02");

  script_cve_id("CVE-2020-8625");

  script_name(english:"Debian DLA-2568-1 : bind9 security update");
  script_summary(english:"Checks dpkg output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis",
    value:"The remote Debian host is missing a security update."
  );
  script_set_attribute(
    attribute:"description",
    value:
"It was discovered that there was a buffer overflow attack in the bind9
DNS server caused by an issue in the GSSAPI ('Generic Security
Services') security policy negotiation.

For Debian 9 'Stretch', this problem has been fixed in version
1:9.10.3.dfsg.P4-12.3+deb9u8.

We recommend that you upgrade your bind9 packages.

For the detailed security status of bind9 please refer to its security
tracker page at: https://security-tracker.debian.org/tracker/bind9

NOTE: Tenable Network Security has extracted the preceding description
block directly from the DLA security advisory. Tenable has attempted
to automatically clean and format it as much as possible without
introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://lists.debian.org/debian-lts-announce/2021/02/msg00029.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/stretch/bind9"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/source-package/bind9"
  );
  script_set_attribute(attribute:"solution", value:"Upgrade the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-8625");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:bind9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:bind9-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:bind9-host");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:bind9utils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dnsutils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:host");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libbind-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libbind-export-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libbind9-140");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libdns-export162");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libdns-export162-udeb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libdns162");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libirs-export141");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libirs-export141-udeb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libirs141");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libisc-export160");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libisc-export160-udeb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libisc160");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libisccc-export140");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libisccc-export140-udeb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libisccc140");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libisccfg-export140");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libisccfg-export140-udeb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libisccfg140");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:liblwres141");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:lwresd");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/02/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/02/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/02/22");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Debian Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"9.0", prefix:"bind9", reference:"1:9.10.3.dfsg.P4-12.3+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"bind9-doc", reference:"1:9.10.3.dfsg.P4-12.3+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"bind9-host", reference:"1:9.10.3.dfsg.P4-12.3+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"bind9utils", reference:"1:9.10.3.dfsg.P4-12.3+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"dnsutils", reference:"1:9.10.3.dfsg.P4-12.3+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"host", reference:"1:9.10.3.dfsg.P4-12.3+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libbind-dev", reference:"1:9.10.3.dfsg.P4-12.3+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libbind-export-dev", reference:"1:9.10.3.dfsg.P4-12.3+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libbind9-140", reference:"1:9.10.3.dfsg.P4-12.3+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libdns-export162", reference:"1:9.10.3.dfsg.P4-12.3+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libdns-export162-udeb", reference:"1:9.10.3.dfsg.P4-12.3+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libdns162", reference:"1:9.10.3.dfsg.P4-12.3+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libirs-export141", reference:"1:9.10.3.dfsg.P4-12.3+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libirs-export141-udeb", reference:"1:9.10.3.dfsg.P4-12.3+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libirs141", reference:"1:9.10.3.dfsg.P4-12.3+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libisc-export160", reference:"1:9.10.3.dfsg.P4-12.3+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libisc-export160-udeb", reference:"1:9.10.3.dfsg.P4-12.3+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libisc160", reference:"1:9.10.3.dfsg.P4-12.3+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libisccc-export140", reference:"1:9.10.3.dfsg.P4-12.3+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libisccc-export140-udeb", reference:"1:9.10.3.dfsg.P4-12.3+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libisccc140", reference:"1:9.10.3.dfsg.P4-12.3+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libisccfg-export140", reference:"1:9.10.3.dfsg.P4-12.3+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libisccfg-export140-udeb", reference:"1:9.10.3.dfsg.P4-12.3+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libisccfg140", reference:"1:9.10.3.dfsg.P4-12.3+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"liblwres141", reference:"1:9.10.3.dfsg.P4-12.3+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"lwresd", reference:"1:9.10.3.dfsg.P4-12.3+deb9u8")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");