Ubuntu 6.06 LTS / 8.04 LTS / 8.10 / 9.04 : curl vulnerability (USN-818-1)

2009-08-20T00:00:00
ID UBUNTU_USN-818-1.NASL
Type nessus
Reporter Ubuntu Security Notice (C) 2009-2019 Canonical, Inc. / NASL script (C) 2009-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2009-08-20T00:00:00

Description

Scott Cantor discovered that Curl did not correctly handle SSL certificates with zero bytes in the Common Name. A remote attacker could exploit this to perform a man in the middle attack to view sensitive information or alter encrypted communications.

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.

                                        
                                            #%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-818-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

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

if (description)
{
  script_id(40657);
  script_version("1.14");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/19");

  script_cve_id("CVE-2009-2417");
  script_bugtraq_id(36032);
  script_xref(name:"USN", value:"818-1");

  script_name(english:"Ubuntu 6.06 LTS / 8.04 LTS / 8.10 / 9.04 : curl vulnerability (USN-818-1)");
  script_summary(english:"Checks dpkg output for updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Ubuntu host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Scott Cantor discovered that Curl did not correctly handle SSL
certificates with zero bytes in the Common Name. A remote attacker
could exploit this to perform a man in the middle attack to view
sensitive information or alter encrypted communications.

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/818-1/"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(310);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:curl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcurl3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcurl3-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcurl3-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcurl3-gnutls");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcurl3-gnutls-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcurl3-openssl-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcurl4-gnutls-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcurl4-openssl-dev");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:6.06:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:8.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:8.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:9.04");

  script_set_attribute(attribute:"patch_publication_date", value:"2009/08/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2009/08/20");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2009-2019 Canonical, Inc. / NASL script (C) 2009-2018 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:"^(6\.06|8\.04|8\.10|9\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 6.06 / 8.04 / 8.10 / 9.04", "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:"6.06", pkgname:"curl", pkgver:"7.15.1-1ubuntu3.2")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libcurl3", pkgver:"7.15.1-1ubuntu3.2")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libcurl3-dbg", pkgver:"7.15.1-1ubuntu3.2")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libcurl3-dev", pkgver:"7.15.1-1ubuntu3.2")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libcurl3-gnutls", pkgver:"7.15.1-1ubuntu3.2")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libcurl3-gnutls-dev", pkgver:"7.15.1-1ubuntu3.2")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libcurl3-openssl-dev", pkgver:"7.15.1-1ubuntu3.2")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"curl", pkgver:"7.18.0-1ubuntu2.2")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"libcurl3", pkgver:"7.18.0-1ubuntu2.2")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"libcurl3-dbg", pkgver:"7.18.0-1ubuntu2.2")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"libcurl3-gnutls", pkgver:"7.18.0-1ubuntu2.2")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"libcurl4-gnutls-dev", pkgver:"7.18.0-1ubuntu2.2")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"libcurl4-openssl-dev", pkgver:"7.18.0-1ubuntu2.2")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"curl", pkgver:"7.18.2-1ubuntu4.4")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"libcurl3", pkgver:"7.18.2-1ubuntu4.4")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"libcurl3-dbg", pkgver:"7.18.2-1ubuntu4.4")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"libcurl3-gnutls", pkgver:"7.18.2-1ubuntu4.4")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"libcurl4-gnutls-dev", pkgver:"7.18.2-1ubuntu4.4")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"libcurl4-openssl-dev", pkgver:"7.18.2-1ubuntu4.4")) flag++;
if (ubuntu_check(osver:"9.04", pkgname:"curl", pkgver:"7.18.2-8ubuntu4.1")) flag++;
if (ubuntu_check(osver:"9.04", pkgname:"libcurl3", pkgver:"7.18.2-8ubuntu4.1")) flag++;
if (ubuntu_check(osver:"9.04", pkgname:"libcurl3-dbg", pkgver:"7.18.2-8ubuntu4.1")) flag++;
if (ubuntu_check(osver:"9.04", pkgname:"libcurl3-gnutls", pkgver:"7.18.2-8ubuntu4.1")) flag++;
if (ubuntu_check(osver:"9.04", pkgname:"libcurl4-gnutls-dev", pkgver:"7.18.2-8ubuntu4.1")) flag++;
if (ubuntu_check(osver:"9.04", pkgname:"libcurl4-openssl-dev", pkgver:"7.18.2-8ubuntu4.1")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    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, "curl / libcurl3 / libcurl3-dbg / libcurl3-dev / libcurl3-gnutls / etc");
}