Vulnerabilities > CVE-2018-5735 - Reachable Assertion vulnerability in Debian Linux 10.0/8.0/9.0

047910
CVSS 7.5 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
HIGH
network
low complexity
debian
CWE-617
nessus

Summary

The Debian backport of the fix for CVE-2017-3137 leads to assertion failure in validator.c:1858; Affects Debian versions 9.9.5.dfsg-9+deb8u15; 9.9.5.dfsg-9+deb8u18; 9.10.3.dfsg.P4-12.3+deb9u5; 9.11.5.P4+dfsg-5.1 No ISC releases are affected. Other packages from other distributions who did similar backports for the fix for 2017-3137 may also be affected.

Vulnerable Configurations

Part Description Count
OS
Debian
3

Common Weakness Enumeration (CWE)

Nessus

NASL familyDebian Local Security Checks
NASL idDEBIAN_DLA-1285.NASL
descriptionBIND, a DNS server implementation, was found to be vulnerable to a denial of service flaw was found in the handling of DNSSEC validation. A remote attacker could use this flaw to make named exit unexpectedly with an assertion failure via a specially crafted DNS response. This issue is closely related to CVE-2017-3139. For Debian 7
last seen2020-03-17
modified2018-02-20
plugin id106872
published2018-02-20
reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/106872
titleDebian DLA-1285-1 : bind9 security update
code
#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-1285-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(106872);
  script_version("3.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");

  script_cve_id("CVE-2018-5735");

  script_name(english:"Debian DLA-1285-1 : 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:
"BIND, a DNS server implementation, was found to be vulnerable to a
denial of service flaw was found in the handling of DNSSEC validation.
A remote attacker could use this flaw to make named exit unexpectedly
with an assertion failure via a specially crafted DNS response. This
issue is closely related to CVE-2017-3139.

For Debian 7 'Wheezy', these problems have been fixed in version
9.8.4.dfsg.P1-6+nmu2+deb7u20.

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/2018/02/msg00020.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/wheezy/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:L/Au:N/C:N/I:N/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:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  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:libbind9-80");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libdns88");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libisc84");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libisccc80");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libisccfg82");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:liblwres80");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:lwresd");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/10/30");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/02/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/02/20");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2020 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:"7.0", prefix:"bind9", reference:"9.8.4.dfsg.P1-6+nmu2+deb7u20")) flag++;
if (deb_check(release:"7.0", prefix:"bind9-doc", reference:"9.8.4.dfsg.P1-6+nmu2+deb7u20")) flag++;
if (deb_check(release:"7.0", prefix:"bind9-host", reference:"9.8.4.dfsg.P1-6+nmu2+deb7u20")) flag++;
if (deb_check(release:"7.0", prefix:"bind9utils", reference:"9.8.4.dfsg.P1-6+nmu2+deb7u20")) flag++;
if (deb_check(release:"7.0", prefix:"dnsutils", reference:"9.8.4.dfsg.P1-6+nmu2+deb7u20")) flag++;
if (deb_check(release:"7.0", prefix:"host", reference:"9.8.4.dfsg.P1-6+nmu2+deb7u20")) flag++;
if (deb_check(release:"7.0", prefix:"libbind-dev", reference:"9.8.4.dfsg.P1-6+nmu2+deb7u20")) flag++;
if (deb_check(release:"7.0", prefix:"libbind9-80", reference:"9.8.4.dfsg.P1-6+nmu2+deb7u20")) flag++;
if (deb_check(release:"7.0", prefix:"libdns88", reference:"9.8.4.dfsg.P1-6+nmu2+deb7u20")) flag++;
if (deb_check(release:"7.0", prefix:"libisc84", reference:"9.8.4.dfsg.P1-6+nmu2+deb7u20")) flag++;
if (deb_check(release:"7.0", prefix:"libisccc80", reference:"9.8.4.dfsg.P1-6+nmu2+deb7u20")) flag++;
if (deb_check(release:"7.0", prefix:"libisccfg82", reference:"9.8.4.dfsg.P1-6+nmu2+deb7u20")) flag++;
if (deb_check(release:"7.0", prefix:"liblwres80", reference:"9.8.4.dfsg.P1-6+nmu2+deb7u20")) flag++;
if (deb_check(release:"7.0", prefix:"lwresd", reference:"9.8.4.dfsg.P1-6+nmu2+deb7u20")) 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");