Vulnerabilities > CVE-2009-0050 - Improper Input Validation vulnerability in Entrouvert Lasso 1.9.9.0/2.0.01/2.2.10

047910
CVSS 4.3 - MEDIUM
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
PARTIAL
Availability impact
NONE
network
entrouvert
CWE-20
nessus
NVD
Published: 2009-01-07
Updated: 2018-10-11

Summary

Lasso 2.2.1 and earlier does not properly check the return value from the OpenSSL DSA_verify function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature, a similar vulnerability to CVE-2008-5077.

Vulnerable Configurations

Part Description Count
Application
Entrouvert
3

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Server Side Include (SSI) Injection
    An attacker can use Server Side Include (SSI) Injection to send code to a web application that then gets executed by the web server. Doing so enables the attacker to achieve similar results to Cross Site Scripting, viz., arbitrary code execution and information disclosure, albeit on a more limited scale, since the SSI directives are nowhere near as powerful as a full-fledged scripting language. Nonetheless, the attacker can conveniently gain access to sensitive files, such as password files, and execute shell commands.
  • Cross Zone Scripting
    An attacker is able to cause a victim to load content into their web-browser that bypasses security zone controls and gain access to increased privileges to execute scripting code or other web objects such as unsigned ActiveX controls or applets. This is a privilege elevation attack targeted at zone-based web-browser security. In a zone-based model, pages belong to one of a set of zones corresponding to the level of privilege assigned to that page. Pages in an untrusted zone would have a lesser level of access to the system and/or be restricted in the types of executable content it was allowed to invoke. In a cross-zone scripting attack, a page that should be assigned to a less privileged zone is granted the privileges of a more trusted zone. This can be accomplished by exploiting bugs in the browser, exploiting incorrect configuration in the zone controls, through a cross-site scripting attack that causes the attackers' content to be treated as coming from a more trusted page, or by leveraging some piece of system functionality that is accessible from both the trusted and less trusted zone. This attack differs from "Restful Privilege Escalation" in that the latter correlates to the inadequate securing of RESTful access methods (such as HTTP DELETE) on the server, while cross-zone scripting attacks the concept of security zones as implemented by a browser.
  • Cross Site Scripting through Log Files
    An attacker may leverage a system weakness where logs are susceptible to log injection to insert scripts into the system's logs. If these logs are later viewed by an administrator through a thin administrative interface and the log data is not properly HTML encoded before being written to the page, the attackers' scripts stored in the log will be executed in the administrative interface with potentially serious consequences. This attack pattern is really a combination of two other attack patterns: log injection and stored cross site scripting.
  • Command Line Execution through SQL Injection
    An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.

Nessus

  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-1700.NASL
    descriptionIt was discovered that Lasso, a library for Liberty Alliance and SAML protocols performs incorrect validation of the return value of OpenSSL
    last seen2020-06-01
    modified2020-06-02
    plugin id35334
    published2009-01-12
    reporterThis script is Copyright (C) 2009-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/35334
    titleDebian DSA-1700-1 : lasso - incorrect API usage
    code
    #%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-1700. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(35334);
  script_version("1.13");
  script_cvs_date("Date: 2019/08/02 13:32:21");

  script_cve_id("CVE-2009-0050");
  script_bugtraq_id(33150);
  script_xref(name:"DSA", value:"1700");

  script_name(english:"Debian DSA-1700-1 : lasso - incorrect API usage");
  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 was discovered that Lasso, a library for Liberty Alliance and SAML
protocols performs incorrect validation of the return value of
OpenSSL's DSA_verify() function."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=511262"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2009/dsa-1700"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the lasso package.

For the stable distribution (etch), this problem has been fixed in
version 0.6.5-3+etch1.

For the upcoming stable distribution (lenny) and the unstable
distribution (sid), this problem has been fixed in version 2.2.1-2."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N");
  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(287);

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

  script_set_attribute(attribute:"patch_publication_date", value:"2009/01/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2009/01/12");
  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:"liblasso-java", reference:"0.6.5-3+etch1")) flag++;
if (deb_check(release:"4.0", prefix:"liblasso3", reference:"0.6.5-3+etch1")) flag++;
if (deb_check(release:"4.0", prefix:"liblasso3-dev", reference:"0.6.5-3+etch1")) flag++;
if (deb_check(release:"4.0", prefix:"php4-lasso", reference:"0.6.5-3+etch1")) flag++;
if (deb_check(release:"4.0", prefix:"python-lasso", reference:"0.6.5-3+etch1")) 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");
  • NASL familyVMware ESX Local Security Checks
    NASL idVMWARE_VMSA-2009-0004.NASL
    descriptiona. Updated OpenSSL package for the Service Console fixes a security issue. OpenSSL 0.9.7a-33.24 and earlier does not properly check the return value from the EVP_VerifyFinal function, which could allow a remote attacker to bypass validation of the certificate chain via a malformed SSL/TLS signature for DSA and ECDSA keys. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2008-5077 to this issue. b. Update bind package for the Service Console fixes a security issue. A flaw was discovered in the way Berkeley Internet Name Domain (BIND) checked the return value of the OpenSSL DSA_do_verify function. On systems using DNSSEC, a malicious zone could present a malformed DSA certificate and bypass proper certificate validation, allowing spoofing attacks. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2009-0025 to this issue. c. Updated vim package for the Service Console addresses several security issues. Several input flaws were found in Visual editor IMproved
    last seen2020-06-01
    modified2020-06-02
    plugin id40389
    published2009-07-27
    reporterThis script is Copyright (C) 2009-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/40389
    titleVMSA-2009-0004 : ESX Service Console updates for openssl, bind, and vim
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from VMware Security Advisory 2009-0004. 
# The text itself is copyright (C) VMware Inc.
#

include("compat.inc");

if (description)
{
  script_id(40389);
  script_version("1.28");
  script_cvs_date("Date: 2018/08/06 14:03:16");

  script_cve_id("CVE-2007-2953", "CVE-2008-2712", "CVE-2008-3432", "CVE-2008-4101", "CVE-2008-5077", "CVE-2009-0021", "CVE-2009-0025", "CVE-2009-0046", "CVE-2009-0047", "CVE-2009-0048", "CVE-2009-0049", "CVE-2009-0050", "CVE-2009-0051", "CVE-2009-0124", "CVE-2009-0125", "CVE-2009-0127", "CVE-2009-0128", "CVE-2009-0130");
  script_bugtraq_id(25095, 33150, 33151);
  script_xref(name:"VMSA", value:"2009-0004");

  script_name(english:"VMSA-2009-0004 : ESX Service Console updates for openssl, bind, and vim");
  script_summary(english:"Checks esxupdate output for the patches");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote VMware ESX host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"a. Updated OpenSSL package for the Service Console fixes a
   security issue.

   OpenSSL 0.9.7a-33.24 and earlier does not properly check the return
   value from the EVP_VerifyFinal function, which could allow a remote
   attacker to bypass validation of the certificate chain via a
   malformed SSL/TLS signature for DSA and ECDSA keys.

   The Common Vulnerabilities and Exposures project (cve.mitre.org)
   has assigned the name CVE-2008-5077 to this issue.

b. Update bind package for the Service Console fixes a security issue.

   A flaw was discovered in the way Berkeley Internet Name Domain
   (BIND) checked the return value of the OpenSSL DSA_do_verify
   function. On systems using DNSSEC, a malicious zone could present
   a malformed DSA certificate and bypass proper certificate
   validation, allowing spoofing attacks.

   The Common Vulnerabilities and Exposures project (cve.mitre.org)
   has assigned the name CVE-2009-0025 to this issue.

c. Updated vim package for the Service Console addresses several
   security issues.

   Several input flaws were found in Visual editor IMproved's (Vim)
   keyword and tag handling. If Vim looked up a document's maliciously
   crafted tag or keyword, it was possible to execute arbitrary code as
   the user running Vim.

   The Common Vulnerabilities and Exposures project (cve.mitre.org)
   has assigned the name CVE-2008-4101 to this issue.

   A heap-based overflow flaw was discovered in Vim's expansion of file
   name patterns with shell wildcards. An attacker could create a
   specially crafted file or directory name, when opened by Vim causes
   the application to stop responding or execute arbitrary code.

   The Common Vulnerabilities and Exposures project (cve.mitre.org)
   has assigned the name CVE-2008-3432 to this issue.

   Several input flaws were found in various Vim system functions. If a
   user opened a specially crafted file, it was possible to execute
   arbitrary code as the user running Vim.

   The Common Vulnerabilities and Exposures project (cve.mitre.org)
   has assigned the name CVE-2008-2712 to this issue.

   A format string flaw was discovered in Vim's help tag processor. If
   a user was tricked into executing the 'helptags' command on
   malicious data, arbitrary code could be executed with the
   permissions of the user running VIM.

   The Common Vulnerabilities and Exposures project (cve.mitre.org)
   has assigned the name CVE-2007-2953 to this issue."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://lists.vmware.com/pipermail/security-announce/2010/000077.html"
  );
  script_set_attribute(attribute:"solution", value:"Apply the missing patches.");
  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(20, 119, 287);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:vmware:esx:2.5.5");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:vmware:esx:3.0.2");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:vmware:esx:3.0.3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:vmware:esx:3.5");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:vmware:esx:4.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2009/03/31");
  script_set_attribute(attribute:"plugin_publication_date", value:"2009/07/27");
  script_set_attribute(attribute:"vuln_publication_date", value:"2007/07/27");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2009-2018 Tenable Network Security, Inc.");
  script_family(english:"VMware ESX Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/VMware/release", "Host/VMware/version");
  script_require_ports("Host/VMware/esxupdate", "Host/VMware/esxcli_software_vibs");

  exit(0);
}


include("audit.inc");
include("vmware_esx_packages.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/VMware/release")) audit(AUDIT_OS_NOT, "VMware ESX / ESXi");
if (
  !get_kb_item("Host/VMware/esxcli_software_vibs") &&
  !get_kb_item("Host/VMware/esxupdate")
) audit(AUDIT_PACKAGE_LIST_MISSING);


init_esx_check(date:"2009-03-31");
flag = 0;


if (esx_check(ver:"ESX 2.5.5", patch:"13")) flag++;

if (esx_check(ver:"ESX 3.0.2", patch:"ESX-1008406")) flag++;
if (esx_check(ver:"ESX 3.0.2", patch:"ESX-1008408")) flag++;
if (esx_check(ver:"ESX 3.0.2", patch:"ESX-1008409")) flag++;

if (
  esx_check(
    ver           : "ESX 3.0.3",
    patch         : "ESX303-200903403-SG",
    patch_updates : make_list("ESX303-Rollup01", "ESX303-Update01")
  )
) flag++;
if (
  esx_check(
    ver           : "ESX 3.0.3",
    patch         : "ESX303-200903405-SG",
    patch_updates : make_list("ESX303-Rollup01", "ESX303-Update01")
  )
) flag++;
if (
  esx_check(
    ver           : "ESX 3.0.3",
    patch         : "ESX303-200903406-SG",
    patch_updates : make_list("ESX303-Rollup01", "ESX303-Update01")
  )
) flag++;

if (
  esx_check(
    ver           : "ESX 3.5.0",
    patch         : "ESX350-200904406-SG",
    patch_updates : make_list("ESX350-Update05", "ESX350-Update05a")
  )
) flag++;
if (
  esx_check(
    ver           : "ESX 3.5.0",
    patch         : "ESX350-200904407-SG",
    patch_updates : make_list("ESX350-201002404-SG", "ESX350-Update05", "ESX350-Update05a")
  )
) flag++;
if (
  esx_check(
    ver           : "ESX 3.5.0",
    patch         : "ESX350-200904408-SG",
    patch_updates : make_list("ESX350-201012401-SG", "ESX350-Update05", "ESX350-Update05a")
  )
) flag++;

if (
  esx_check(
    ver           : "ESX 4.0",
    patch         : "ESX400-200912402-SG",
    patch_updates : make_list("ESX400-Update02", "ESX400-Update03", "ESX400-Update04")
  )
) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:esx_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
  • NASL familySolaris Local Security Checks
    NASL idSOLARIS9_X86_114265.NASL
    descriptionSunOS 5.9_x86: in.dhcpd libresolv and BIND. Date this patch was last updated by Sun : Jul/21/11
    last seen2020-06-01
    modified2020-06-02
    plugin id27094
    published2007-10-17
    reporterThis script is Copyright (C) 2007-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/27094
    titleSolaris 9 (x86) : 114265-23
    code
    #%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(27094);
  script_version("1.44");
  script_cvs_date("Date: 2019/10/25 13:36:27");

  script_cve_id("CVE-2007-2930", "CVE-2008-1447", "CVE-2008-4194", "CVE-2009-0025", "CVE-2009-0050", "CVE-2009-0051", "CVE-2009-0696");
  script_xref(name:"IAVA", value:"2008-A-0045");

  script_name(english:"Solaris 9 (x86) : 114265-23");
  script_summary(english:"Check for patch 114265-23");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote host is missing Sun Security Patch number 114265-23"
  );
  script_set_attribute(
    attribute:"description", 
    value:
"SunOS 5.9_x86: in.dhcpd libresolv and BIND.
Date this patch was last updated by Sun : Jul/21/11"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://getupdates.oracle.com/readme/114265-23"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"You should install this patch for your system to be up-to-date."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_cwe_id(16, 287, 399);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:sun:solaris");

  script_set_attribute(attribute:"patch_publication_date", value:"2011/07/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2007/10/17");
  script_set_attribute(attribute:"stig_severity", value:"I");
  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:"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("solaris.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

if (solaris_check_patch(release:"5.9_x86", arch:"i386", patch:"114265-23", obsoleted_by:"", package:"SUNWhea", version:"11.9.0,REV=2002.11.04.02.51") < 0) flag++;
if (solaris_check_patch(release:"5.9_x86", arch:"i386", patch:"114265-23", obsoleted_by:"", package:"SUNWcstl", version:"11.9.0,REV=2002.11.04.02.51") < 0) flag++;
if (solaris_check_patch(release:"5.9_x86", arch:"i386", patch:"114265-23", obsoleted_by:"", package:"SUNWdhcsu", version:"11.9.0,REV=2002.11.04.02.51") < 0) flag++;
if (solaris_check_patch(release:"5.9_x86", arch:"i386", patch:"114265-23", obsoleted_by:"", package:"SUNWinamd", version:"11.9.0,REV=2002.11.04.02.51") < 0) flag++;
if (solaris_check_patch(release:"5.9_x86", arch:"i386", patch:"114265-23", obsoleted_by:"", package:"SUNWcsu", version:"11.9.0,REV=2002.11.04.02.51") < 0) flag++;
if (solaris_check_patch(release:"5.9_x86", arch:"i386", patch:"114265-23", obsoleted_by:"", package:"SUNWcsl", version:"11.9.0,REV=2002.11.04.02.51") < 0) flag++;
if (solaris_check_patch(release:"5.9_x86", arch:"i386", patch:"114265-23", obsoleted_by:"", package:"SUNWarc", version:"11.9.0,REV=2002.11.04.02.51") < 0) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:solaris_get_report());
  else security_warning(0);
  exit(0);
}
audit(AUDIT_HOST_NOT, "affected");
  • NASL familySolaris Local Security Checks
    NASL idSOLARIS9_112837.NASL
    descriptionSunOS 5.9: in.dhcpd libresolv and BIND9 pa. Date this patch was last updated by Sun : Jul/21/11
    last seen2020-06-01
    modified2020-06-02
    plugin id26165
    published2007-09-25
    reporterThis script is Copyright (C) 2007-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/26165
    titleSolaris 9 (sparc) : 112837-24

References