Vulnerabilities > CVE-2007-0012 - Improper Input Validation vulnerability in SUN JRE

047910
CVSS 4.3 - MEDIUM
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
PARTIAL
network
sun
CWE-20
nessus

Summary

Sun JRE 5.0 before update 14 allows remote attackers to cause a denial of service (Internet Explorer crash) via an object tag with an encoded applet and an undefined name attribute, which triggers a NULL pointer dereference in jpiexp32.dll when the applet is decoded and passed to the JVM.

Vulnerable Configurations

Part Description Count
Application
Sun
21

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 familyWindows
NASL idSUN_JAVA_JRE_JPIEXP32_DOS.NASL
descriptionAccording to its version number, the Sun Java Runtime Environment (JRE) installed on the remote host reportedly contains an issue in
last seen2020-06-01
modified2020-06-02
plugin id30148
published2008-02-01
reporterThis script is Copyright (C) 2008-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/30148
titleSun Java JRE jpiexp32.dll NULL Pointer Remote DoS
code
#
#  (C) Tenable Network Security, Inc.
#


include("compat.inc");

if (description)
{
  script_id(30148);
  script_version("1.25");
  script_cvs_date("Date: 2018/11/15 20:50:28");

  script_cve_id("CVE-2007-0012");
  script_bugtraq_id(27185);

  script_name(english:"Sun Java JRE jpiexp32.dll NULL Pointer Remote DoS");
  script_summary(english:"Checks version of Sun JRE"); 
 
 script_set_attribute(attribute:"synopsis", value:
"The remote Windows host has an application that is prone to a denial
of service attack." );
 script_set_attribute(attribute:"description", value:
"According to its version number, the Sun Java Runtime Environment
(JRE) installed on the remote host reportedly contains an issue in
'jpiexp32.dll' that can lead to a NULL pointer exception when an HTML
object references a Java applet but does not define the 'name'
attribute.  If a remote attacker can trick a user on the affected host
into visiting a specially crafted web page, this issue could be 
leveraged to cause the JRE and Internet Explorer to crash." );
 script_set_attribute(attribute:"see_also", value:"http://research.corsaire.com/advisories/c060905-002.txt" );
 script_set_attribute(attribute:"see_also", value:"https://www.securityfocus.com/archive/1/archive/1/485942/100/0/threaded" );
 script_set_attribute(attribute:"solution", value:
"Upgrade to Sun Java 2 JDK and JRE 5.0 update 14 or later." );
 script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P");
 script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
 script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L");
 script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/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(20);
 
 script_set_attribute(attribute:"plugin_publication_date", value: "2008/02/01");
 script_set_attribute(attribute:"patch_publication_date", value: "2008/01/08");
 script_set_attribute(attribute:"cpe", value:"cpe:/a:oracle:jre");
script_set_attribute(attribute:"plugin_type", value:"local");
script_end_attributes();

 
  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

  script_copyright(english:"This script is Copyright (C) 2008-2018 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("sun_java_jre_installed.nasl");
  script_require_keys("SMB/Java/JRE/Installed");

  exit(0);
}


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


# Check each installed JRE.
installs = get_kb_list("SMB/Java/JRE/*");
if (isnull(installs)) exit(1, "The 'SMB/Java/JRE/' KB item is missing.");

info = "";
vuln = 0;
installed_versions = "";

foreach install (list_uniq(keys(installs)))
{
  ver = install - "SMB/Java/JRE/";
  if (ver =~ "^[0-9.]+")
    installed_versions = installed_versions + " & " + ver;
  if (ver =~ "^1\.5\.0_(0[0-9]|1[0-3])[^0-9]?")
  {
    dirs = make_list(get_kb_list(install));
    vuln += max_index(dirs);

    foreach dir (dirs)
      info += '\n  Path              : ' + dir;

    info += '\n  Installed version : ' + ver;
    info += '\n  Fixed version     : 1.5.0_14\n';
  }
}


# Report if any were found to be vulnerable.
if (info)
{
  port = get_kb_item("SMB/transport");
  if (!port) port = 445;

  if (report_verbosity > 0)
  {
    if (vuln > 1) s = "s of Java are";
    else s = " of Java is";

    report =
      '\n' +
      'The following vulnerable instance'+s+' installed on the\n' +
      'remote host :\n' +
      info;
    security_warning(port:port, extra:report);
  }
  else security_warning(port);
  exit(0);
}
else
{
  installed_versions = substr(installed_versions, 3);
  if (" & " >< installed_versions)
    exit(0, "The Java "+installed_versions+" installs on the remote host are not affected.");
  else
    exit(0, "The Java "+installed_versions+" install on the remote host is not affected.");
}

Seebug

bulletinFamilyexploit
descriptionBUGTRAQ ID: 27185 CVE(CAN) ID: CVE-2007-0012 Solaris系统的Java运行时环境(JRE)为JAVA应用程序提供可靠的运行环境。 JRE处理畸形的Applet数据时存在漏洞,远程攻击者可能利用此漏洞导致相关的应用崩溃。 RFC2397标准允许在URI中编码java applet并嵌入到HTML文档中。如果applet被编码为带有未定义name属性对象标签的数据参数的话,并将其传送给Internet Explorer,则解码后将其传送给JVM就会在jpiexp32.dll中触发空指针引用,导致拒绝服务。 Sun JRE &lt; 5.0 Update 14 厂商补丁: Sun --- 目前厂商已经发布了升级补丁以修复这个安全问题,请到厂商的主页下载: <a href=http://sunsolve.sun.com/security target=_blank>http://sunsolve.sun.com/security</a>
idSSV:2813
last seen2017-11-19
modified2008-01-12
published2008-01-12
reporterRoot
titleSun Java运行时环境jpiexp32.dll对象名称空指针引用漏洞