Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : clamav regression (USN-3722-5)

2018-09-18T00:00:00
ID UBUNTU_USN-3722-5.NASL
Type nessus
Reporter Tenable
Modified 2018-12-01T00:00:00

Description

USN-3722-1 fixed vulnerabilities in ClamAV. The new package introduced an issue which caused dpkg-reconfigure to enter an infinite loop. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details :

It was discovered that ClamAV incorrectly handled parsing certain HWP files. A remote attacker could use this issue to cause ClamAV to hang, resulting in a denial of service. (CVE-2018-0360) It was discovered that ClamAV incorrectly handled parsing certain PDF files. A remote attacker could use this issue to cause ClamAV to hang, resulting in a denial of service. (CVE-2018-0361).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-3722-5. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include("compat.inc");

if (description)
{
  script_id(117537);
  script_version("1.2");
  script_cvs_date("Date: 2018/12/01 15:12:42");

  script_cve_id("CVE-2018-0360", "CVE-2018-0361");
  script_xref(name:"USN", value:"3722-5");

  script_name(english:"Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : clamav regression (USN-3722-5)");
  script_summary(english:"Checks dpkg output for updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Ubuntu host is missing a security-related patch."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"USN-3722-1 fixed vulnerabilities in ClamAV. The new package introduced
an issue which caused dpkg-reconfigure to enter an infinite loop. This
update fixes the problem.

We apologize for the inconvenience.

Original advisory details :

It was discovered that ClamAV incorrectly handled parsing certain HWP
files. A remote attacker could use this issue to cause ClamAV to hang,
resulting in a denial of service. (CVE-2018-0360) It was discovered
that ClamAV incorrectly handled parsing certain PDF files. A remote
attacker could use this issue to cause ClamAV to hang, resulting in a
denial of service. (CVE-2018-0361).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu 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://usn.ubuntu.com/3722-5/"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected clamav package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:clamav");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/09/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/09/18");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2018 Canonical, Inc. / NASL script (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Ubuntu Local Security Checks");

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

  exit(0);
}


include("audit.inc");
include("ubuntu.inc");
include("misc_func.inc");

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Ubuntu/release");
if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
release = chomp(release);
if (! ereg(pattern:"^(14\.04|16\.04|18\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 14.04 / 16.04 / 18.04", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Ubuntu", cpu);

flag = 0;

if (ubuntu_check(osver:"14.04", pkgname:"clamav", pkgver:"0.100.1+dfsg-1ubuntu0.14.04.4")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"clamav", pkgver:"0.100.1+dfsg-1ubuntu0.16.04.3")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"clamav", pkgver:"0.100.1+dfsg-1ubuntu0.18.04.3")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "clamav");
}