CWE-705: Incorrect Control Flow Scoping
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Edit Custom FilterThe product does not properly return control flow to the proper location after it has completed a task or detected an unusual condition.
This table specifies different individual consequences
associated with the weakness. The Scope identifies the application security area that is
violated, while the Impact describes the negative technical impact that arises if an
adversary succeeds in exploiting this weakness. The Likelihood provides information about
how likely the specific consequence is expected to be seen relative to the other
consequences in the list. For example, there may be high likelihood that a weakness will be
exploited to achieve a certain impact, but a low likelihood that it will be exploited to
achieve a different impact.
This table shows the weaknesses and high level categories that are related to this
weakness. These relationships are defined as ChildOf, ParentOf, MemberOf and give insight to
similar items that may exist at higher and lower levels of abstraction. In addition,
relationships such as PeerOf and CanAlsoBe are defined to show similar weaknesses that the user
may want to explore.
Relevant to the view "Research Concepts" (CWE-1000)
The different Modes of Introduction provide information
about how and when this
weakness may be introduced. The Phase identifies a point in the life cycle at which
introduction
may occur, while the Note provides a typical scenario related to introduction during the
given
phase.
This listing shows possible areas for which the given
weakness could appear. These
may be for specific named Languages, Operating Systems, Architectures, Paradigms,
Technologies,
or a class of such platforms. The platform is listed along with how frequently the given
weakness appears for that instance.
Languages Class: Not Language-Specific (Undetermined Prevalence) Example 1 The following example attempts to resolve a hostname. (bad code)
Example Language: Java
protected void doPost (HttpServletRequest req, HttpServletResponse res) throws IOException {
String ip = req.getRemoteAddr(); }InetAddress addr = InetAddress.getByName(ip); ... out.println("hello " + addr.getHostName()); A DNS lookup failure will cause the Servlet to throw an exception. Example 2 This code queries a server and displays its status when a request comes from an authorized IP address. (bad code)
Example Language: PHP
$requestingIP = $_SERVER['REMOTE_ADDR'];
if(!in_array($requestingIP,$ipAllowList)){ echo "You are not authorized to view this page"; }http_redirect($errorPageURL); $status = getServerStatus(); echo $status; ... This code redirects unauthorized users, but continues to execute code after calling http_redirect(). This means even unauthorized users may be able to access the contents of the page or perform a DoS attack on the server being queried. Also, note that this code is vulnerable to an IP address spoofing attack (CWE-212). Example 3 Included in the doPost() method defined below is a call to System.exit() in the event of a specific exception. (bad code)
Example Language: Java
Public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
try { }... } catch (ApplicationSpecificException ase) {logger.error("Caught: " + ase.toString()); }System.exit(1);
This MemberOf Relationships table shows additional CWE Categories and Views that
reference this weakness as a member. This information is often useful in understanding where a
weakness fits within the context of external information sources.
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