Debian DSA-1702-1 : ntp - interpretation conflict

2009-01-14T00:00:00
ID DEBIAN_DSA-1702.NASL
Type nessus
Reporter This script is Copyright (C) 2009-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-04-02T00:00:00

Description

It has been discovered that NTP, an implementation of the Network Time Protocol, does not properly check the result of an OpenSSL function for verifying cryptographic signatures, which may ultimately lead to the acceptance of unauthenticated time information. (Note that cryptographic authentication of time servers is often not enabled in the first place.)

                                        
                                            #%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-1702. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(35365);
  script_version("1.16");
  script_cvs_date("Date: 2019/08/02 13:32:21");

  script_cve_id("CVE-2008-5077", "CVE-2009-0021", "CVE-2009-0046", "CVE-2009-0047", "CVE-2009-0048", "CVE-2009-0049", "CVE-2009-0124", "CVE-2009-0125", "CVE-2009-0127", "CVE-2009-0128", "CVE-2009-0130");
  script_bugtraq_id(33150);
  script_xref(name:"DSA", value:"1702");

  script_name(english:"Debian DSA-1702-1 : ntp - interpretation conflict");
  script_summary(english:"Checks dpkg output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"It has been discovered that NTP, an implementation of the Network Time
Protocol, does not properly check the result of an OpenSSL function
for verifying cryptographic signatures, which may ultimately lead to
the acceptance of unauthenticated time information. (Note that
cryptographic authentication of time servers is often not enabled in
the first place.)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=511227"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2009/dsa-1702"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the ntp package.

For the stable distribution (etch), this problem has been fixed in
version 4.2.2.p4+dfsg-2etch1."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/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(20, 287);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ntp");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:4.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2009/01/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2009/01/14");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2009-2019 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:"4.0", prefix:"ntp", reference:"4.2.2.p4+dfsg-2etch1")) flag++;
if (deb_check(release:"4.0", prefix:"ntp-doc", reference:"4.2.2.p4+dfsg-2etch1")) flag++;
if (deb_check(release:"4.0", prefix:"ntp-refclock", reference:"4.2.2.p4+dfsg-2etch1")) flag++;
if (deb_check(release:"4.0", prefix:"ntp-simple", reference:"4.2.2.p4+dfsg-2etch1")) flag++;
if (deb_check(release:"4.0", prefix:"ntpdate", reference:"4.2.2.p4+dfsg-2etch1")) 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");