Vulnerabilities > CVE-2009-3046 - Improper Certificate Validation vulnerability in Opera Browser

047910
CVSS 7.5 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
HIGH
Availability impact
NONE
network
low complexity
opera
CWE-295
nessus

Summary

Opera before 10.00 does not check all intermediate X.509 certificates for revocation, which makes it easier for remote SSL servers to bypass validation of the certificate chain via a revoked certificate.

Vulnerable Configurations

Part Description Count
Application
Opera
128

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Creating a Rogue Certificate Authority Certificate
    An attacker exploits a weakness in the MD5 hash algorithm (weak collision resistance) to generate a certificate signing request (CSR) that contains collision blocks in the "to be signed" part. The attacker specially crafts two different, but valid X.509 certificates that when hashed with the MD5 algorithm would yield the same value. The attacker then sends the CSR for one of the certificates to the Certification Authority which uses the MD5 hashing algorithm. That request is completely valid and the Certificate Authority issues an X.509 certificate to the attacker which is signed with its private key. An attacker then takes that signed blob and inserts it into another X.509 certificate that the attacker generated. Due to the MD5 collision, both certificates, though different, hash to the same value and so the signed blob works just as well in the second certificate. The net effect is that the attackers' second X.509 certificate, which the Certification Authority has never seen, is now signed and validated by that Certification Authority. To make the attack more interesting, the second certificate could be not just a regular certificate, but rather itself a signing certificate. Thus the attacker is able to start their own Certification Authority that is anchored in its root of trust in the legitimate Certification Authority that has signed the attackers' first X.509 certificate. If the original Certificate Authority was accepted by default by browsers, so will now the Certificate Authority set up by the attacker and of course any certificates that it signs. So the attacker is now able to generate any SSL certificates to impersonate any web server, and the user's browser will not issue any warning to the victim. This can be used to compromise HTTPS communications and other types of systems where PKI and X.509 certificates may be used (e.g., VPN, IPSec) .

Nessus

  • NASL familyWindows
    NASL idOPERA_1000.NASL
    descriptionThe version of Opera installed on the remote host is earlier than 10.0 and thus reportedly affected by multiple issues : - Opera does not check the revocation status for intermediate certificates not served by the server. If the intermediate is revoked, this might not impact the security rating in Opera, and the site might be shown as secure. (929) - The collapsed Address bar can in some cases temporarily show the previous domain of the present site. (930) - Some Unicode characters are treated incorrectly which might cause international domain names that use them to be shown in the wrong format. Showing these addresses in Unicode instead of punycode could allow for limited address spoofing. (932) - The application trusts root X.509 certificates signed with the MD2 algorithm. (933) - Certificates which use a wild card immediately before the top level domain, or nulls in the domain name, may pass validation checks in Opera. Sites using such certificates may then incorrectly be presented as secure. (934)
    last seen2020-06-01
    modified2020-06-02
    plugin id40827
    published2009-09-01
    reporterThis script is Copyright (C) 2009-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/40827
    titleOpera < 10.0 Multiple Vulnerabilities
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(40827);
      script_version("1.11");
    
      script_cve_id(
        "CVE-2009-3044",
        "CVE-2009-3045",
        "CVE-2009-3046",
        "CVE-2009-3047",
        "CVE-2009-3049"
      );
      script_bugtraq_id(36202);
      script_xref(name:"Secunia", value:"36414");
      
      script_name(english:"Opera < 10.0 Multiple Vulnerabilities");
      script_summary(english:"Checks version number of Opera");
    
      script_set_attribute(attribute:"synopsis",value:
    "The remote host contains a web browser that is affected by multiple
    issues."
      );
      script_set_attribute(attribute:"description", value:
    "The version of Opera installed on the remote host is earlier than
    10.0 and thus reportedly affected by multiple issues :
    
      - Opera does not check the revocation status for
        intermediate certificates not served by the server. If
        the intermediate is revoked, this might not impact the
        security rating in Opera, and the site might be shown as
        secure. (929)
    
      - The collapsed Address bar can in some cases temporarily
        show the previous domain of the present site. (930)
    
      - Some Unicode characters are treated incorrectly which
        might cause international domain names that use them to
        be shown in the wrong format. Showing these addresses in
        Unicode instead of punycode could allow for limited
        address spoofing. (932)
    
      - The application trusts root X.509 certificates signed 
        with the MD2 algorithm. (933)
    
      - Certificates which use a wild card immediately before
        the top level domain, or nulls in the domain name, may
        pass validation checks in Opera. Sites using such
        certificates may then incorrectly be presented as
        secure. (934)"
      );
    
      script_set_attribute(attribute:"see_also",
        value:"http://web.archive.org/web/20130225215019/http://www.opera.com/support/kb/view/929/"
      );
      script_set_attribute(attribute:"see_also",
        value:"http://web.archive.org/web/20130225215023/http://www.opera.com/support/kb/view/930/"
      );
      script_set_attribute(attribute:"see_also",
        value:"http://web.archive.org/web/20130225215026/http://www.opera.com/support/kb/view/932/"
      );
      script_set_attribute(attribute:"see_also",
        value:"http://web.archive.org/web/20130225215016/http://www.opera.com/support/kb/view/933/"
      );
      script_set_attribute(attribute:"see_also",
        value:"http://web.archive.org/web/20130225215029/http://www.opera.com/support/kb/view/934/"
      );
      script_set_attribute(attribute:"solution", 
        value:"Upgrade to Opera 10.0 or later."
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/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(264, 310);
      script_set_attribute(attribute:"vuln_publication_date",
        value:"2009/09/01"
      );
      script_set_attribute(attribute:"patch_publication_date",
        value:"2009/09/01"
      );
      script_set_attribute(attribute:"plugin_publication_date",
        value:"2009/09/01"
      );
     script_cvs_date("Date: 2018/11/15 20:50:27");
    script_set_attribute(attribute:"plugin_type", value:"local");
    script_set_attribute(attribute:"cpe", value:"cpe:/a:opera:opera_browser");
    script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_family(english:"Windows");
    
      script_copyright(english:"This script is Copyright (C) 2009-2018 Tenable Network Security, Inc.");
    
      script_dependencies("opera_installed.nasl");
      script_require_keys("SMB/Opera/Version");
    
      exit(0);
    }
    
    include("global_settings.inc");
    
    version_ui = get_kb_item("SMB/Opera/Version_UI");
    version = get_kb_item("SMB/Opera/Version");
    if (isnull(version)) exit(1, "Opera version info was not found in the registry.");
    
    ver = split(version, sep:'.', keep:FALSE);
    for (i=0; i<max_index(ver); i++)
      ver[i] = int(ver[i]);
    
    if (ver[0] < 10)
    {
      if (report_verbosity > 0 && version_ui)
      {
        report = string(
          "\n",
          "Opera ", version_ui, " is currently installed on the remote host.\n"
        );
        security_warning(port:get_kb_item("SMB/transport"), extra:report);
      }
      else security_warning(port:get_kb_item("SMB/transport"));
    }
    exit(0, "The installed version of Opera is not affected");
    
  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-201206-03.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-201206-03 (Opera: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in Opera. Please review the CVE identifiers referenced below for details. Impact : A remote attacker could entice a user to open a specially crafted web page, possibly resulting in execution of arbitrary code with the privileges of the process or a Denial of Service condition. A remote attacker may be able to: trick users into downloading and executing arbitrary files, bypass intended access restrictions, spoof trusted content, spoof URLs, bypass the Same Origin Policy, obtain sensitive information, force subscriptions to arbitrary feeds, bypass the popup blocker, bypass CSS filtering, conduct cross-site scripting attacks, or have other unknown impact. A local attacker could perform symlink attacks to overwrite arbitrary files with the privileges of the user running the application or possibly obtain sensitive information. A physically proximate attacker may be able to access an email account. Workaround : There is no known workaround at this time.
    last seen2020-06-01
    modified2020-06-02
    plugin id59631
    published2012-06-21
    reporterThis script is Copyright (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/59631
    titleGLSA-201206-03 : Opera: Multiple vulnerabilities
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were
    # extracted from Gentoo Linux Security Advisory GLSA 201206-03.
    #
    # The advisory text is Copyright (C) 2001-2019 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(59631);
      script_version("1.7");
      script_cvs_date("Date: 2019/10/16 10:34:21");
    
      script_cve_id("CVE-2009-1234", "CVE-2009-2059", "CVE-2009-2063", "CVE-2009-2067", "CVE-2009-2070", "CVE-2009-3013", "CVE-2009-3044", "CVE-2009-3045", "CVE-2009-3046", "CVE-2009-3047", "CVE-2009-3048", "CVE-2009-3049", "CVE-2009-3831", "CVE-2009-4071", "CVE-2009-4072", "CVE-2010-0653", "CVE-2010-1349", "CVE-2010-1989", "CVE-2010-1993", "CVE-2010-2121", "CVE-2010-2421", "CVE-2010-2455", "CVE-2010-2576", "CVE-2010-2658", "CVE-2010-2659", "CVE-2010-2660", "CVE-2010-2661", "CVE-2010-2662", "CVE-2010-2663", "CVE-2010-2664", "CVE-2010-2665", "CVE-2010-3019", "CVE-2010-3020", "CVE-2010-3021", "CVE-2010-4579", "CVE-2010-4580", "CVE-2010-4581", "CVE-2010-4582", "CVE-2010-4583", "CVE-2010-4584", "CVE-2010-4585", "CVE-2010-4586", "CVE-2011-0681", "CVE-2011-0682", "CVE-2011-0683", "CVE-2011-0684", "CVE-2011-0685", "CVE-2011-0686", "CVE-2011-0687", "CVE-2011-1337", "CVE-2011-1824", "CVE-2011-2609", "CVE-2011-2610", "CVE-2011-2611", "CVE-2011-2612", "CVE-2011-2613", "CVE-2011-2614", "CVE-2011-2615", "CVE-2011-2616", "CVE-2011-2617", "CVE-2011-2618", "CVE-2011-2619", "CVE-2011-2620", "CVE-2011-2621", "CVE-2011-2622", "CVE-2011-2623", "CVE-2011-2624", "CVE-2011-2625", "CVE-2011-2626", "CVE-2011-2627", "CVE-2011-2628", "CVE-2011-2629", "CVE-2011-2630", "CVE-2011-2631", "CVE-2011-2632", "CVE-2011-2633", "CVE-2011-2634", "CVE-2011-2635", "CVE-2011-2636", "CVE-2011-2637", "CVE-2011-2638", "CVE-2011-2639", "CVE-2011-2640", "CVE-2011-2641", "CVE-2011-3388", "CVE-2011-4065", "CVE-2011-4681", "CVE-2011-4682", "CVE-2011-4683", "CVE-2012-1924", "CVE-2012-1925", "CVE-2012-1926", "CVE-2012-1927", "CVE-2012-1928", "CVE-2012-1930", "CVE-2012-1931", "CVE-2012-3555", "CVE-2012-3556", "CVE-2012-3557", "CVE-2012-3558", "CVE-2012-3560", "CVE-2012-3561");
      script_xref(name:"GLSA", value:"201206-03");
    
      script_name(english:"GLSA-201206-03 : Opera: Multiple vulnerabilities");
      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-201206-03
    (Opera: Multiple vulnerabilities)
    
        Multiple vulnerabilities have been discovered in Opera. Please review
          the CVE identifiers referenced below for details.
      
    Impact :
    
        A remote attacker could entice a user to open a specially crafted web
          page, possibly resulting in execution of arbitrary code with the
          privileges of the process or a Denial of Service condition. A remote
          attacker may be able to: trick users into downloading and executing
          arbitrary files, bypass intended access restrictions, spoof trusted
          content, spoof URLs, bypass the Same Origin Policy, obtain sensitive
          information, force subscriptions to arbitrary feeds, bypass the popup
          blocker, bypass CSS filtering, conduct cross-site scripting attacks, or
          have other unknown impact.
        A local attacker could perform symlink attacks to overwrite arbitrary
          files with the privileges of the user running the application or possibly
          obtain sensitive information.
        A physically proximate attacker may be able to access an email account.
      
    Workaround :
    
        There is no known workaround at this time."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://security.gentoo.org/glsa/201206-03"
      );
      script_set_attribute(
        attribute:"solution", 
        value:
    "All Opera users should upgrade to the latest version:
          # emerge --sync
          # emerge --ask --oneshot --verbose '>=www-client/opera-12.00.1467'"
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
      script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
      script_set_attribute(attribute:"exploit_available", value:"true");
      script_set_attribute(attribute:"exploited_by_malware", value:"true");
      script_cwe_id(16, 20, 79, 94, 264, 287, 310);
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:opera");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2009/04/02");
      script_set_attribute(attribute:"patch_publication_date", value:"2012/06/15");
      script_set_attribute(attribute:"plugin_publication_date", value:"2012/06/21");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
      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:"www-client/opera", unaffected:make_list("ge 12.00.1467"), vulnerable:make_list("lt 12.00.1467"))) 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, "Opera");
    }
    

Oval

accepted2014-03-17T04:00:27.027-04:00
classvulnerability
contributors
  • nameChandan S
    organizationSecPod Technologies
  • nameJosh Turpin
    organizationSymantec Corporation
  • nameMaria Kedovskaya
    organizationALTX-SOFT
  • nameMaria Mikhno
    organizationALTX-SOFT
definition_extensions
commentOpera Browser is installed
ovaloval:org.mitre.oval:def:6482
descriptionOpera before 10.00 does not check all intermediate X.509 certificates for revocation, which makes it easier for remote SSL servers to bypass validation of the certificate chain via a revoked certificate.
familywindows
idoval:org.mitre.oval:def:6357
statusaccepted
submitted2009-09-24T12:57:10
titleOpera before 10.00 does not check all intermediate X.509 certificates for revocation
version11