Debian DLA-224-1 : ruby1.8 security update

2015-05-19T00:00:00
ID DEBIAN_DLA-224.NASL
Type nessus
Reporter Tenable
Modified 2016-04-28T00:00:00

Description

It was discovered that the Ruby OpenSSL extension, part of the interpreter for the Ruby language, did not properly implement hostname matching, in violation of RFC 6125. This could allow remote attackers to perform a man-in-the-middle attack via crafted SSL certificates.

For the oldoldstable distribution (squeeze), this problem has been fixed in version 1.8.7.302-2squeeze4.

For the oldstable distribution (wheezy), this problem was fixed in version 1.8.7.358-7.1+deb7u3.

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.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-224-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(83531);
  script_version("$Revision: 2.5 $");
  script_cvs_date("$Date: 2016/04/28 18:15:20 $");

  script_cve_id("CVE-2015-1855");
  script_bugtraq_id(74446);
  script_osvdb_id(120541);

  script_name(english:"Debian DLA-224-1 : ruby1.8 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:
"It was discovered that the Ruby OpenSSL extension, part of the
interpreter for the Ruby language, did not properly implement hostname
matching, in violation of RFC 6125. This could allow remote attackers
to perform a man-in-the-middle attack via crafted SSL certificates.

For the oldoldstable distribution (squeeze), this problem has been
fixed in version 1.8.7.302-2squeeze4.

For the oldstable distribution (wheezy), this problem was fixed in
version 1.8.7.358-7.1+deb7u3.

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/2015/05/msg00007.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/squeeze-lts/ruby1.8"
  );
  script_set_attribute(attribute:"solution", value:"Upgrade the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:ND/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_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libruby1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libruby1.8-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libtcltk-ruby1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ri1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ruby1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ruby1.8-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ruby1.8-elisp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ruby1.8-examples");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:6.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2015/05/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/05/19");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2015-2016 Tenable Network Security, Inc.");
  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:"6.0", prefix:"libruby1.8", reference:"1.8.7.302-2squeeze4")) flag++;
if (deb_check(release:"6.0", prefix:"libruby1.8-dbg", reference:"1.8.7.302-2squeeze4")) flag++;
if (deb_check(release:"6.0", prefix:"libtcltk-ruby1.8", reference:"1.8.7.302-2squeeze4")) flag++;
if (deb_check(release:"6.0", prefix:"ri1.8", reference:"1.8.7.302-2squeeze4")) flag++;
if (deb_check(release:"6.0", prefix:"ruby1.8", reference:"1.8.7.302-2squeeze4")) flag++;
if (deb_check(release:"6.0", prefix:"ruby1.8-dev", reference:"1.8.7.302-2squeeze4")) flag++;
if (deb_check(release:"6.0", prefix:"ruby1.8-elisp", reference:"1.8.7.302-2squeeze4")) flag++;
if (deb_check(release:"6.0", prefix:"ruby1.8-examples", reference:"1.8.7.302-2squeeze4")) 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");