Fedora 20 : libssh2-1.5.0-1.fc20 (2015-3791)

2015-03-31T00:00:00
ID FEDORA_2015-3791.NASL
Type nessus
Reporter Tenable
Modified 2015-10-19T00:00:00

Description

This update, to the current upstream release version, contains numerous bug fixes and enhancements as described in the RELEASE-NOTES file.

These include a security fix for CVE-2015-1782 :

A malicious attacker could man in the middle a real server and cause libssh2-using clients to crash (denial of service) or otherwise read and use completely unintended memory areas in this process. There are no known exploits of this flaw at this time.

See http://www.libssh2.org/adv_20150311.html for further details.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora 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 Fedora Security Advisory 2015-3791.
#

include("compat.inc");

if (description)
{
  script_id(82433);
  script_version("$Revision: 1.3 $");
  script_cvs_date("$Date: 2015/10/19 23:06:18 $");

  script_cve_id("CVE-2015-1782");
  script_bugtraq_id(73061);
  script_xref(name:"FEDORA", value:"2015-3791");

  script_name(english:"Fedora 20 : libssh2-1.5.0-1.fc20 (2015-3791)");
  script_summary(english:"Checks rpm output for the updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Fedora host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update, to the current upstream release version, contains
numerous bug fixes and enhancements as described in the RELEASE-NOTES
file.

These include a security fix for CVE-2015-1782 :

A malicious attacker could man in the middle a real server and cause
libssh2-using clients to crash (denial of service) or otherwise read
and use completely unintended memory areas in this process. There are
no known exploits of this flaw at this time.

See http://www.libssh2.org/adv_20150311.html for further details.

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora 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:"http://www.libssh2.org/adv_20150311.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=1199511"
  );
  # https://lists.fedoraproject.org/pipermail/package-announce/2015-March/153933.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?520e1060"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected libssh2 package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  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:fedoraproject:fedora:libssh2");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:20");

  script_set_attribute(attribute:"patch_publication_date", value:"2015/03/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/03/31");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2015 Tenable Network Security, Inc.");
  script_family(english:"Fedora Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! ereg(pattern:"^20([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 20.x", "Fedora " + os_ver);

if (!get_kb_item("Host/RedHat/rpm-list")) 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, "Fedora", cpu);

flag = 0;
if (rpm_check(release:"FC20", reference:"libssh2-1.5.0-1.fc20")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libssh2");
}