Vulnerabilities > CVE-2006-4924 - Resource Management Errors vulnerability in Openbsd Openssh

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 200609-17.
#
# The advisory text is Copyright (C) 2001-2015 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike 
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#

include("compat.inc");

if (description)
{
  script_id(22464);
  script_version("1.15");
  script_cvs_date("Date: 2019/08/02 13:32:43");

  script_cve_id("CVE-2006-4924");
  script_bugtraq_id(20216);
  script_xref(name:"GLSA", value:"200609-17");

  script_name(english:"GLSA-200609-17 : OpenSSH: Denial of Service");
  script_summary(english:"Checks for updated package(s) in /var/db/pkg");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Gentoo host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote host is affected by the vulnerability described in GLSA-200609-17
(OpenSSH: Denial of Service)

    Tavis Ormandy of the Google Security Team discovered a Denial of
    Service vulnerability in the SSH protocol version 1 CRC compensation
    attack detector.
  
Impact :

    A remote unauthenticated attacker may be able to trigger excessive CPU
    usage by sending a pathological SSH message, denying service to other
    legitimate users or processes.
  
Workaround :

    The system administrator may disable SSH protocol version 1 in
    /etc/ssh/sshd_config."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/200609-17"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All OpenSSH users should upgrade to the latest version:
    # emerge --sync
    # emerge --ask --oneshot --verbose '>=net-misc/openssh-4.3_p2-r5'"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(399);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:openssh");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2006/09/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/09/28");
  script_set_attribute(attribute:"vuln_publication_date", value:"2006/09/25");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2006-2019 Tenable Network Security, Inc.");
  script_family(english:"Gentoo Local Security Checks");

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

  exit(0);
}


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

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (qpkg_check(package:"net-misc/openssh", unaffected:make_list("ge 4.3_p2-r5"), vulnerable:make_list("lt 4.3_p2-r5"))) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:qpkg_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = qpkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "OpenSSH");
}

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description) 
{
  script_id(22466);
  script_version("1.30");
  script_cvs_date("Date: 2018/07/16 14:09:13");

  script_cve_id("CVE-2006-4924", "CVE-2006-4925", "CVE-2006-5051", "CVE-2006-5052", "CVE-2006-5229", "CVE-2007-3102", "CVE-2008-4109");
  script_bugtraq_id(20216, 20241, 20245);

  script_name(english:"OpenSSH < 4.4 Multiple Vulnerabilities");
  script_summary(english:"Checks version number of OpenSSH");
 
  script_set_attribute(attribute:"synopsis", value:
"The remote SSH server is affected by multiple vulnerabilities." );
  script_set_attribute(attribute:"description", value:
"According to its banner, the version of OpenSSH installed on the
remote host is affected by multiple vulnerabilities :

  - A race condition exists that may allow an
    unauthenticated, remote attacker to crash the service 
    or, on portable OpenSSH, possibly execute code on the 
    affected host.  Note that successful exploitation 
    requires that GSSAPI authentication be enabled.
    
  - A flaw exists that may allow an attacker to determine 
    the validity of usernames on some platforms. Note that 
    this issue requires that GSSAPI authentication be 
    enabled.

  - When SSH version 1 is used, an issue can be triggered 
    via an SSH packet that contains duplicate blocks that 
    could result in a loss of availability for the service.

  - On Fedora Core 6 (and possibly other systems), an
    unspecified vulnerability in the
    linux_audit_record_event() function allows remote
    attackers to inject incorrect information into
    audit logs.");

  script_set_attribute(attribute:"see_also", value:"http://www.openssh.com/txt/release-4.4" );
  script_set_attribute(attribute:"solution", value:
"Upgrade to OpenSSH 4.4 or later." );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(264, 362, 399);
  script_set_attribute(attribute:"plugin_publication_date", value: "2006/09/28");
  script_set_attribute(attribute:"vuln_publication_date", value: "2006/09/28");
  script_set_attribute(attribute:"plugin_type", value: "remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:openbsd:openssh");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");
  script_copyright(english:"This script is Copyright (C) 2006-2018 Tenable Network Security, Inc.");
  script_dependencies("ssh_detect.nasl");
  script_require_ports("Services/ssh", 22);
  exit(0);
}

include("backport.inc");
include("global_settings.inc");
include("misc_func.inc");

# Ensure the port is open.
port = get_service(svc:"ssh", exit_on_fail:TRUE);

# Get banner for service.
banner = get_kb_item_or_exit("SSH/banner/"+port);

bp_banner = tolower(get_backport_banner(banner:banner));
if ("openssh" >!< bp_banner) exit(0, "The SSH service on port "+port+" is not OpenSSH.");
if (backported) exit(1, "The banner from the OpenSSH server on port "+port+" indicates patches may have been backported.");

if (!get_kb_item("Settings/PCI_DSS"))
{
  auth = get_kb_item_or_exit("SSH/supportedauth/" + port);
  if ("gssapi" >!< auth) exit(0, "The SSH service on port "+port+" doesn't support GSSAPI.");
}

if (bp_banner =~ "openssh[-_]([0-3]\.|4\.[0-3]([^0-9]|$))")
  security_hole(port);

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text in this plugin was
# extracted from the Oracle SunOS Patch Updates.
#
include("compat.inc");

if (description)
{
  script_id(107389);
  script_version("1.8");
  script_cvs_date("Date: 2019/10/25 13:36:23");

  script_cve_id("CVE-2006-0225", "CVE-2006-4924");

  script_name(english:"Solaris 10 (sparc) : 123324-03");
  script_summary(english:"Check for patch 123324-03");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote host is missing Sun Security Patch number 123324-03"
  );
  script_set_attribute(
    attribute:"description", 
    value:
"SunOS 5.10: sshd patch.
Date this patch was last updated by Sun : Jun/20/07"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://download.oracle.com/sunalerts/1000947.1.html"
  );
  script_set_attribute(attribute:"solution", value:"Install patch 123324-03");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(399);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:solaris:10:123324");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:solaris:10:124442");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:solaris:10:125430");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:solaris:10");

  script_set_attribute(attribute:"patch_publication_date", value:"2007/06/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/03/12");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Solaris Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Solaris/showrev");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("solaris.inc");

showrev = get_kb_item("Host/Solaris/showrev");
if (empty_or_null(showrev)) audit(AUDIT_OS_NOT, "Solaris");
os_ver = pregmatch(pattern:"Release: (\d+.(\d+))", string:showrev);
if (empty_or_null(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Solaris");
full_ver = os_ver[1];
os_level = os_ver[2];
if (full_ver != "5.10") audit(AUDIT_OS_NOT, "Solaris 10", "Solaris " + os_level);
package_arch = pregmatch(pattern:"Application architecture: (\w+)", string:showrev);
if (empty_or_null(package_arch)) audit(AUDIT_UNKNOWN_ARCH);
package_arch = package_arch[1];
if (package_arch != "sparc") audit(AUDIT_ARCH_NOT, "sparc", package_arch);
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

if (solaris_check_patch(release:"5.10", arch:"sparc", patch:"123324-03", obsoleted_by:"120011-14 ", package:"SUNWcslr", version:"11.10.0,REV=2005.01.21.15.53") < 0) flag++;
if (solaris_check_patch(release:"5.10", arch:"sparc", patch:"123324-03", obsoleted_by:"120011-14 ", package:"SUNWhea", version:"11.10.0,REV=2005.01.21.15.53") < 0) flag++;
if (solaris_check_patch(release:"5.10", arch:"sparc", patch:"123324-03", obsoleted_by:"120011-14 ", package:"SUNWsshcu", version:"11.10.0,REV=2005.01.21.15.53") < 0) flag++;
if (solaris_check_patch(release:"5.10", arch:"sparc", patch:"123324-03", obsoleted_by:"120011-14 ", package:"SUNWsshdu", version:"11.10.0,REV=2005.01.21.15.53") < 0) flag++;
if (solaris_check_patch(release:"5.10", arch:"sparc", patch:"123324-03", obsoleted_by:"120011-14 ", package:"SUNWsshu", version:"11.10.0,REV=2005.01.21.15.53") < 0) flag++;

if (flag) {
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : solaris_get_report()
  );
} else {
  patch_fix = solaris_patch_fix_get();
  if (!empty_or_null(patch_fix)) audit(AUDIT_PATCH_INSTALLED, patch_fix, "Solaris 10");
  tested = solaris_pkg_tests_get();
  if (!empty_or_null(tested)) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  audit(AUDIT_PACKAGE_NOT_INSTALLED, "SUNWcslr / SUNWhea / SUNWsshcu / SUNWsshdu / SUNWsshu");
}

#%NASL_MIN_LEVEL 80502

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from openSUSE Security Update openssh-2183.
#
# The text description of this plugin is (C) SUSE LLC.
#

include("compat.inc");

if (description)
{
  script_id(27365);
  script_version ("1.15");
  script_cvs_date("Date: 2019/10/25 13:36:28");

  script_cve_id("CVE-2006-4924", "CVE-2006-4925", "CVE-2006-5051", "CVE-2006-5052");

  script_name(english:"openSUSE 10 Security Update : openssh (openssh-2183)");
  script_summary(english:"Check for the openssh-2183 patch");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote openSUSE host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Several security problems were fixed in OpenSSH :

  - CVE-2006-4924: A denial of service problem has been
    fixed in OpenSSH which could be used to cause lots of
    CPU consumption on a remote openssh server.

  - CVE-2006-4925: If a remote attacker is able to inject
    network traffic this could be used to cause a client
    connection to close.

  - CVE-2006-5051: Fixed an unsafe signal hander reported by
    Mark Dowd. The signal handler was vulnerable to a race
    condition that could be exploited to perform a
    pre-authentication denial of service. This vulnerability
    could theoretically lead to pre-authentication remote
    code execution if GSSAPI authentication is enabled, but
    the likelihood of successful exploitation appears
    remote.

  - CVE-2006-5052: Fixed a GSSAPI authentication abort that
    could be used to determine the validity of usernames on
    some platforms."
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected openssh packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_cwe_id(362, 399);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh-askpass");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:10.1");

  script_set_attribute(attribute:"patch_publication_date", value:"2006/10/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2007/10/17");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2007-2019 Tenable Network Security, Inc.");
  script_family(english:"SuSE Local Security Checks");

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

  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/SuSE/release");
if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "openSUSE");
if (release !~ "^(SUSE10\.1)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "10.1", release);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

ourarch = get_kb_item("Host/cpu");
if (!ourarch) audit(AUDIT_UNKNOWN_ARCH);
if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch);

flag = 0;

if ( rpm_check(release:"SUSE10.1", reference:"openssh-4.2p1-18.9") ) flag++;
if ( rpm_check(release:"SUSE10.1", reference:"openssh-askpass-4.2p1-18.9") ) flag++;

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

#%NASL_MIN_LEVEL 80502

# @DEPRECATED@
#
# This script has been deprecated as the associated patch is not
# currently a recommended security fix.
#
# Disabled on 2011/10/24.
#

#
# (C) Tenable Network Security, Inc.
#
#

if ( ! defined_func("bn_random") ) exit(0);
include("compat.inc");

if(description)
{
 script_id(25645);
 script_version("1.22");

 script_name(english: "Solaris 10 (x86) : 123325-03");
 script_cve_id("CVE-2006-0225", "CVE-2006-4924");
 script_set_attribute(attribute: "synopsis", value:
"The remote host is missing Sun Security Patch number 123325-03");
 script_set_attribute(attribute: "description", value:
'SunOS 5.10_x86: sshd patch.
Date this patch was last updated by Sun : Jun/21/07');
 script_set_attribute(attribute: "solution", value:
"You should install this patch for your system to be up-to-date.");
 script_set_attribute(attribute: "see_also", value:
"http://download.oracle.com/sunalerts/1000947.1.html");
 script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
 script_cwe_id(399);
 script_set_attribute(attribute:"plugin_publication_date", value: "2007/07/02");
 script_cvs_date("Date: 2019/10/25 13:36:24");
 script_set_attribute(attribute:"vuln_publication_date", value: "2005/09/28");
 script_end_attributes();

 script_summary(english: "Check for patch 123325-03");
 script_category(ACT_GATHER_INFO);
 script_copyright(english:"This script is Copyright (C) 2007-2019 Tenable Network Security, Inc.");
 family["english"] = "Solaris Local Security Checks";
 script_family(english:family["english"]);
 
 script_dependencies("ssh_get_info.nasl");
 script_require_keys("Host/Solaris/showrev");
 exit(0);
}

# Deprecated.
exit(0, "The associated patch is not currently a recommended security fix.");

• name	Aharon Chernin
  organization	SCAP.com, LLC

• name	Dragos Prisaca
  organization	G2, Inc.

• comment	The operating system installed on the system is Red Hat Enterprise Linux 3
  oval	oval:org.mitre.oval:def:11782

• comment	CentOS Linux 3.x
  oval	oval:org.mitre.oval:def:16651

• comment	The operating system installed on the system is Red Hat Enterprise Linux 4
  oval	oval:org.mitre.oval:def:11831

• comment	CentOS Linux 4.x
  oval	oval:org.mitre.oval:def:16636

• comment	Oracle Linux 4.x
  oval	oval:org.mitre.oval:def:15990

• comment	Solaris 9 (SPARC) is installed
  oval	oval:org.mitre.oval:def:1457

• comment	Solaris 9 (x86) is installed
  oval	oval:org.mitre.oval:def:1683

• comment	Solaris 10 (SPARC) is installed
  oval	oval:org.mitre.oval:def:1440

• comment	Solaris 10 (x86) is installed
  oval	oval:org.mitre.oval:def:1926