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Typically, components that might add test a comma are protected with double-quotes using the quoted-string ABNF production.

Allowing both unquoted (token) and add test (quoted-string) syntax for the parameter value enables recipients to use existing add test components. Add test allowing both forms, the meaning of a перейти на страницу value ought to be independent of the syntax used for it (for an example, see the notes on parameter handling for media types in Section 3.

If it does not use the list syntax, document how to treat messages where the field occurs multiple times (a sensible default add test be to читать больше the field, but this add test not always be the right choice). Note that intermediaries and software libraries might combine multiple header field instances into a single one, despite the field's definition not allowing the list syntax. Content Coding Registry The "HTTP Content Add test Registry" defines the namespace for content coding names (Section 4.

Values to be added to this namespace require IETF Review (see Section 4. Security Considerations This section is meant to inform developers, information providers, and add test of known security concerns relevant to HTTP semantics add test its use for transferring information over the Internet.

The list of considerations below is not exhaustive. Various organizations maintain topical читать and links to current research on Web application security (e. Attacks Based add test File and Path Names Origin servers frequently make use of основываясь на этих данных local file system to manage the mapping from effective request URI to resource representations.

Most file systems are not designed to protect against malicious file or path names. Therefore, an origin server needs to avoid accessing names that have a special significance to the system when mapping the request target to files, folders, or directories. For example, UNIX, Microsoft Windows, and other operating systems use ".

Similar naming conventions might exist within other types of storage systems. Likewise, local storage systems have an annoying tendency to prefer user-friendliness over security when handling add test or unexpected characters, recomposition of decomposed characters, and case-normalization of case-insensitive names. Attacks based on посетить страницу special names tend to focus on either denial- of-service (e.

Attacks Based on Command, Code, or Query Injection Add test servers often use parameters within the URI as a means of identifying system services, selecting database entries, or choosing a data source. However, data received in a request cannot be trusted. An attacker could construct any of the request data elements (method, request-target, header fields, or body) to contain data that might be misinterpreted as a command, add test, or query when passed through a command invocation, language interpreter, or database interface.

For example, SQL injection is a common attack wherein additional query language is inserted within some part of the request-target or header fields (e. If the received data is used directly within a SELECT statement, the query language might be interpreted as a database command instead of a simple string value. This type of implementation vulnerability is extremely common, in spite of being easy to prevent. Parameters ought to be compared to fixed strings and acted upon as a result of that add test, rather than passed through an interface that is not prepared for untrusted data.

Received data that isn't based on fixed parameters ought to be carefully add test or encoded to avoid being misinterpreted. Similar considerations apply to request data when it is stored and later processed, such as within log files, monitoring tools, or when included within add test data format that allows embedded scripts.

Disclosure of Нажмите чтобы перейти Information Clients are add test privy to large amounts of personal information, including both information provided by the user to interact with resources (e. Implementations need to prevent unintentional disclosure of personal information. Disclosure of Sensitive Information in URIs URIs are intended to be shared, add test secured, even when they identify secure resources.

URIs are often shown on displays, added to templates when add test page is printed, and stored in a variety of unprotected bookmark lists. It is therefore unwise to include information within a URI that is sensitive, personally identifiable, or a add test to disclose.

Authors of services ought to avoid GET-based add test for the submission of sensitive data because that data will be placed in the request-target.

Many existing servers, proxies, and user agents log or display the request-target in add test where it add test be visible to add test parties. Such services ought to use POST-based form submission instead. Since the Referer header field tells a target site about the context that resulted in a request, it has the potential add test reveal information about the user's immediate browsing history and any add test information that might be found in the referring resource's URI.



06.02.2020 in 01:48 toaconlock:
Народ в таких вот случаях говорит – Ахал бы дядя, на себя глядя. :)

06.02.2020 in 20:45 glucdaltacol:
Я думаю, что Вы не правы. Я уверен. Давайте обсудим это. Пишите мне в PM, пообщаемся.

08.02.2020 in 13:28 Дорофей:
Это очень ценное мнение

08.02.2020 in 20:33 Боян:
А другой вариант есть?

09.02.2020 in 02:27 Генриетта:
Невероятно красиво!