Vulnerabilities > CVE-2012-6468 - Improper Restriction of Operations Within the Bounds of A Memory Buffer vulnerability in Opera Browser

047910
CVSS 9.3 - CRITICAL
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
network
opera
CWE-119
critical
nessus

Summary

Heap-based buffer overflow in Opera before 12.11 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a long HTTP response.

Vulnerable Configurations

Part Description Count
Application
Opera
171

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.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.

Nessus

  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-201406-14.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-201406-14 (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 using Opera, possibly resulting in execution of arbitrary code with the privileges of the process or a Denial of Service condition. Furthermore, a remote attacker may be able to obtain sensitive information, conduct Cross-Site Scripting (XSS) attacks, or bypass security restrictions. A local attacker may be able to obtain sensitive information. Workaround : There is no known workaround at this time.
    last seen2020-06-01
    modified2020-06-02
    plugin id76065
    published2014-06-16
    reporterThis script is Copyright (C) 2014-2015 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/76065
    titleGLSA-201406-14 : 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 201406-14.
    #
    # 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(76065);
      script_version("$Revision: 1.3 $");
      script_cvs_date("$Date: 2015/04/13 14:27:08 $");
    
      script_cve_id("CVE-2012-6461", "CVE-2012-6462", "CVE-2012-6463", "CVE-2012-6464", "CVE-2012-6465", "CVE-2012-6466", "CVE-2012-6467", "CVE-2012-6468", "CVE-2012-6469", "CVE-2012-6470", "CVE-2012-6471", "CVE-2012-6472", "CVE-2013-1618", "CVE-2013-1637", "CVE-2013-1638", "CVE-2013-1639");
      script_bugtraq_id(56407, 56594, 56788, 56980, 56984, 57120, 57121, 57132, 57633, 57773);
      script_xref(name:"GLSA", value:"201406-14");
    
      script_name(english:"GLSA-201406-14 : 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-201406-14
    (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 using Opera, possibly resulting in execution of arbitrary code with
          the privileges of the process or a Denial of Service condition.
          Furthermore, a remote attacker may be able to obtain sensitive
          information, conduct Cross-Site Scripting (XSS) attacks, or bypass
          security restrictions.
        A local attacker may be able to obtain sensitive information.
      
    Workaround :
    
        There is no known workaround at this time."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://security.gentoo.org/glsa/201406-14"
      );
      script_set_attribute(
        attribute:"solution", 
        value:
    "All Opera users should upgrade to the latest version:
          # emerge --sync
          # emerge --ask --oneshot --verbose '>=www-client/opera-12.13_p1734'"
      );
      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: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:gentoo:linux:opera");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2014/06/15");
      script_set_attribute(attribute:"plugin_publication_date", value:"2014/06/16");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2014-2015 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:"www-client/opera", unaffected:make_list("ge 12.13_p1734"), vulnerable:make_list("lt 12.13_p1734"))) 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");
    }
    
  • NASL familyWindows
    NASL idOPERA_1211.NASL
    descriptionThe version of Opera installed on the remote host is earlier than 12.11 and is, therefore, reportedly affected by the following vulnerabilities : - A heap-based buffer overflow error exists related to handling HTTP responses that can lead to application crashes or arbitrary code execution. (1036) - An issue exists related to the application
    last seen2020-06-01
    modified2020-06-02
    plugin id62984
    published2012-11-21
    reporterThis script is Copyright (C) 2012-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/62984
    titleOpera < 12.11 Multiple Vulnerabilities
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(62984);
      script_version("1.7");
      script_cvs_date("Date: 2018/11/15 20:50:27");
    
      script_cve_id("CVE-2012-6468", "CVE-2012-6469");
      script_bugtraq_id(56594);
    
      script_name(english:"Opera < 12.11 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
    vulnerabilities.");
      script_set_attribute(attribute:"description", value:
    "The version of Opera installed on the remote host is earlier than 12.11
    and is, therefore, reportedly affected by the following 
    vulnerabilities :
    
      - A heap-based buffer overflow error exists related to
        handling HTTP responses that can lead to application
        crashes or arbitrary code execution. (1036)
    
      - An issue exists related to the application's error
        handling that can allow a malicious website to determine
        the existence of and path to local files. (1037)");
      script_set_attribute(attribute:"see_also", value:"http://www.opera.com/support/kb/view/1036/");
      script_set_attribute(attribute:"see_also", value:"http://web.archive.org/web/20130223094445/http://www.opera.com/support/kb/view/1037/");
      script_set_attribute(attribute:"see_also", value:"http://web.archive.org/web/20170911062419/http://www.opera.com:80/docs/changelogs/unified/1211/");
      script_set_attribute(attribute:"solution", value: "Upgrade to Opera 12.11 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: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_set_attribute(attribute:"vuln_publication_date", value:"2012/11/20");
      script_set_attribute(attribute:"patch_publication_date", value:"2012/11/20");
      script_set_attribute(attribute:"plugin_publication_date", value:"2012/11/21");
    
      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) 2012-2018 Tenable Network Security, Inc.");
    
      script_dependencies("opera_installed.nasl");
      script_require_keys("SMB/Opera/Version");
    
      exit(0);
    }
    
    include("audit.inc");
    include("global_settings.inc");
    include("misc_func.inc");
    
    version = get_kb_item_or_exit("SMB/Opera/Version");
    path = get_kb_item_or_exit("SMB/Opera/Path");
    
    version_ui = get_kb_item("SMB/Opera/Version_UI");
    if (isnull(version_ui)) version_report = version;
    else version_report = version_ui; 
    
    fixed_version = "12.11.1661.0";
    
    # Check if we need to display full version info in case of Alpha/Beta/RC
    major_minor = eregmatch(string:version, pattern:"^([0-9]+\.[0-9]+)");
    if (major_minor[1] == "12.11")
    {
      fixed_version_report = fixed_version;
      version_report = version;
    }
    else fixed_version_report = "12.11";
    
    if (ver_compare(ver:version, fix:fixed_version) == -1)
    {
      port = get_kb_item("SMB/transport");
    
      if (report_verbosity > 0)
      {
        report = 
          '\n  Path              : ' + path +
          '\n  Installed version : ' + version_report +
          '\n  Fixed version     : ' + fixed_version_report +
          '\n';
        security_hole(port:port, extra:report);
      }
      else security_hole(port);
      exit(0);
    }
    else audit(AUDIT_INST_PATH_NOT_VULN, "Opera", version_report, path);