2020 Security Vulnerability Report
CVE Statistics for 2020
The average severity was 7.1 out of 10, which decreased by 0.1 from 2019.
Products & Vendors with the most security vulnerabilities published in 2020 Vulnerabilities may exist in multiple products or vendors
697 vulnerabilities in 2020
593 vulnerabilities in 2020
506 vulnerabilities in 2020
443 vulnerabilities in 2020
435 vulnerabilities in 2020
429 vulnerabilities in 2020
387 vulnerabilities in 2020
386 vulnerabilities in 2020
382 vulnerabilities in 2020
267 vulnerabilities in 2020
234 vulnerabilities in 2020
220 vulnerabilities in 2020
169 vulnerabilities in 2020
161 vulnerabilities in 2020
155 vulnerabilities in 2020
1189 vulnerabilities in 2020
980 vulnerabilities in 2020
860 vulnerabilities in 2020
593 vulnerabilities in 2020
530 vulnerabilities in 2020
506 vulnerabilities in 2020
448 vulnerabilities in 2020
384 vulnerabilities in 2020
338 vulnerabilities in 2020
322 vulnerabilities in 2020
306 vulnerabilities in 2020
278 vulnerabilities in 2020
237 vulnerabilities in 2020
216 vulnerabilities in 2020
206 vulnerabilities in 2020
180 vulnerabilities in 2020
179 vulnerabilities in 2020
172 vulnerabilities in 2020
152 vulnerabilities in 2020
118 vulnerabilities in 2020
XSSThe software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
Improper Privilege ManagementThe software does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
Information DisclosureThe product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
Memory CorruptionThe software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.
Out-of-bounds ReadThe software reads data past the end, or before the beginning, of the intended buffer. Typically, this can allow attackers to read sensitive information from other memory locations or cause a crash. A crash can occur when the code reads a variable amount of data and assumes that a sentinel exists to stop the read operation, such as a NUL in a string. The expected sentinel might not be located in the out-of-bounds memory, causing excessive data to be read, leading to a segmentation fault or a buffer overflow. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent read operation then produces undefined or unexpected results.
Buffer OverflowThe software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.
Shell injectionThe software constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.
SQL InjectionThe software constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component.
Directory traversalThe software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the software does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
Classic Buffer OverflowThe program copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. A buffer overflow condition exists when a program attempts to put more data in a buffer than it can hold, or when a program attempts to put data in a memory area outside of the boundaries of a buffer. The simplest type of error, and the most common cause of buffer overflows, is the "classic" case in which the program copies the buffer without restricting how much is copied. Other variants exist, but the existence of a classic overflow strongly suggests that the programmer is not considering even the most basic of security protections.
Session RidingThe web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request. When a web server is designed to receive a request from a client without any mechanism for verifying that it was intentionally sent, then it might be possible for an attacker to trick a client into making an unintentional request to the web server which will be treated as an authentic request. This can be done via a URL, image load, XMLHttpRequest, etc. and can result in exposure of data or unintended code execution.
Dangling pointerReferencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.
authentificationWhen an actor claims to have a given identity, the software does not prove or insufficiently proves that the claim is correct.
InjectionThe software constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. Software has certain assumptions about what constitutes data and control respectively. It is the lack of verification of these assumptions for user-controlled input that leads to injection problems. Injection problems encompass a wide variety of issues -- all mitigated in very different ways and usually attempted in order to alter the control flow of the process. For this reason, the most effective way to discuss these weaknesses is to note the distinct features which classify them as injection weaknesses. The most important issue to note is that all injection problems share one thing in common -- i.e., they allow for the injection of control plane data into the user-controlled data plane. This means that the execution of the process may be altered by sending code in through legitimate data channels, using no other mechanism. While buffer overflows, and many other flaws, involve the use of some further issue to gain execution, injection problems need only for the data to be parsed. The most classic instantiations of this category of weakness are SQL injection and format string vulnerabilities.
Resource ExhaustionThe software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.
AuthZThe software performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.
Incorrect Default PermissionsDuring installation, installed file permissions are set to allow anyone to modify those files.
Insufficiently Protected CredentialsThe product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval.
Unrestricted File UploadThe software allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment.
AuthZThe software does not perform an authorization check when an actor attempts to access a resource or perform an action.
Incorrect Permission Assignment for Critical ResourceThe product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors. When a resource is given a permissions setting that provides access to a wider range of actors than required, it could lead to the exposure of sensitive information, or the modification of that resource by unintended parties. This is especially dangerous when the resource is related to program configuration, execution or sensitive user data.
Integer Overflow or WraparoundThe software performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. An integer overflow or wraparound occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may wrap to become a very small or negative number. While this may be intended behavior in circumstances that rely on wrapping, it can have security consequences if the wrap is unexpected. This is especially the case if the integer overflow can be triggered using user-supplied inputs. This becomes security-critical when the result is used to control looping, make a security decision, or determine the offset or size in behaviors such as memory allocation, copying, concatenation, etc.
NULL Pointer DereferenceA NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. NULL pointer dereference issues can occur through a number of flaws, including race conditions, and simple programming omissions.
Use of Hard-coded CredentialsThe software contains hard-coded credentials, such as a password or cryptographic key, which it uses for its own inbound authentication, outbound communication to external components, or encryption of internal data.
Java Application Servers
Web Application Framework
Report Last Updated: January 23, 2022