Debian DSA-3680-1 : bind9 - security update

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-3680. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(93748);
  script_version("2.14");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/01/23");

  script_cve_id("CVE-2016-2775", "CVE-2016-2776");
  script_xref(name:"DSA", value:"3680");
  script_xref(name:"IAVA", value:"2017-A-0004");

  script_name(english:"Debian DSA-3680-1 : bind9 - security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security-related update.");
  script_set_attribute(attribute:"description", value:
"Two vulnerabilities were reported in BIND, a DNS server.

  - CVE-2016-2775
    The lwresd component in BIND (which is not enabled by
    default) could crash while processing an overlong
    request name. This could lead to a denial of service.

  - CVE-2016-2776
    A crafted query could crash the BIND name server daemon,
    leading to a denial of service. All server roles
    (authoritative, recursive and forwarding) in default
    configurations are affected.");
  script_set_attribute(attribute:"see_also", value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=831796");
  script_set_attribute(attribute:"see_also", value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=839010");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2016-2775");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2016-2776");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/jessie/bind9");
  script_set_attribute(attribute:"see_also", value:"https://www.debian.org/security/2016/dsa-3680");
  script_set_attribute(attribute:"solution", value:
"Upgrade the bind9 packages.

For the stable distribution (jessie), these problems have been fixed
in version 1:9.9.5.dfsg-9+deb8u7.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2016-2776");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"patch_publication_date", value:"2016/09/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/09/28");

  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:"cpe:/o:debian:debian_linux:8.0");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Debian Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2016-2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  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:"8.0", prefix:"bind9", reference:"1:9.9.5.dfsg-9+deb8u7")) flag++;
if (deb_check(release:"8.0", prefix:"bind9-doc", reference:"1:9.9.5.dfsg-9+deb8u7")) flag++;
if (deb_check(release:"8.0", prefix:"bind9-host", reference:"1:9.9.5.dfsg-9+deb8u7")) flag++;
if (deb_check(release:"8.0", prefix:"bind9utils", reference:"1:9.9.5.dfsg-9+deb8u7")) flag++;
if (deb_check(release:"8.0", prefix:"dnsutils", reference:"1:9.9.5.dfsg-9+deb8u7")) flag++;
if (deb_check(release:"8.0", prefix:"host", reference:"1:9.9.5.dfsg-9+deb8u7")) flag++;
if (deb_check(release:"8.0", prefix:"libbind-dev", reference:"1:9.9.5.dfsg-9+deb8u7")) flag++;
if (deb_check(release:"8.0", prefix:"libbind-export-dev", reference:"1:9.9.5.dfsg-9+deb8u7")) flag++;
if (deb_check(release:"8.0", prefix:"libbind9-90", reference:"1:9.9.5.dfsg-9+deb8u7")) flag++;
if (deb_check(release:"8.0", prefix:"libdns-export100", reference:"1:9.9.5.dfsg-9+deb8u7")) flag++;
if (deb_check(release:"8.0", prefix:"libdns-export100-udeb", reference:"1:9.9.5.dfsg-9+deb8u7")) flag++;
if (deb_check(release:"8.0", prefix:"libdns100", reference:"1:9.9.5.dfsg-9+deb8u7")) flag++;
if (deb_check(release:"8.0", prefix:"libirs-export91", reference:"1:9.9.5.dfsg-9+deb8u7")) flag++;
if (deb_check(release:"8.0", prefix:"libirs-export91-udeb", reference:"1:9.9.5.dfsg-9+deb8u7")) flag++;
if (deb_check(release:"8.0", prefix:"libisc-export95", reference:"1:9.9.5.dfsg-9+deb8u7")) flag++;
if (deb_check(release:"8.0", prefix:"libisc-export95-udeb", reference:"1:9.9.5.dfsg-9+deb8u7")) flag++;
if (deb_check(release:"8.0", prefix:"libisc95", reference:"1:9.9.5.dfsg-9+deb8u7")) flag++;
if (deb_check(release:"8.0", prefix:"libisccc90", reference:"1:9.9.5.dfsg-9+deb8u7")) flag++;
if (deb_check(release:"8.0", prefix:"libisccfg-export90", reference:"1:9.9.5.dfsg-9+deb8u7")) flag++;
if (deb_check(release:"8.0", prefix:"libisccfg-export90-udeb", reference:"1:9.9.5.dfsg-9+deb8u7")) flag++;
if (deb_check(release:"8.0", prefix:"libisccfg90", reference:"1:9.9.5.dfsg-9+deb8u7")) flag++;
if (deb_check(release:"8.0", prefix:"liblwres90", reference:"1:9.9.5.dfsg-9+deb8u7")) flag++;
if (deb_check(release:"8.0", prefix:"lwresd", reference:"1:9.9.5.dfsg-9+deb8u7")) flag++;

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