[permalink] [id link]
The " ASCII " buffer email described the mechanism of Good Times as a buffer overflow.
from
Wikipedia
Some Related Sentences
ASCII and buffer
The most common versions — the " Infinite loop " and " ASCII buffer " editions — were much longer, containing descriptions of what exactly Good Times would do to the computer of someone who opened it, as well as comparisons to other viruses of the time, and references to a U. S. Federal Communications Commission warning.
Other high level instructions implemented " translate this buffer through this ( e. g. EBCDIC to ASCII ) conversion table into that buffer " and " sort this table using these sort requirements into that table ".
ASCII and email
The basic Internet email transmission protocol, SMTP, supports only 7-bit ASCII characters ( see also 8BITMIME ).
Other languages based on the Latin alphabet typically include diacritics and are not supported in 7-bit ASCII, meaning text in these languages cannot be correctly represented in basic email.
MIME defines a collection of email headers for specifying additional attributes of a message including content type, and defines a set of transfer encodings which can be used to represent 8-bit binary data using characters from the 7-bit ASCII character set.
The PBM format was invented by Jef Poskanzer in the 1980s as a format that allowed monochrome bitmaps to be transmitted within an email message as plain ASCII text, allowing it to survive any changes in text formatting.
The local-part of the email address may use any of these ASCII characters RFC 5322 Section 3. 2. 3, RFC 6531 permits Unicode beyond the ASCII range:
For example, many early email systems were not 8-bit clean ; they seemed to transfer typical short text messages properly, but converted " unusual " characters ( the control characters, the " high ASCII " characters ) in an irreversible way into some other " usual " character.
Usenet and email message bodies were intended to contain only ASCII characters ( RFC 822 or RFC 2822 ).
Originally Internet SMTP email was 7-bit ASCII text only, and attaching files was done by manually encoding 8-bit files using uuencode, BinHex or xxencode and pasting the resulting text into the body of the message.
At the time, there was no standard, reliable way to send binary files in email, and attempting to send anything other than 7-bit ASCII in email often resulted in data corruption.
HTML email can use HTML entities to use characters from anywhere in Unicode even if the HTML source text for the email is in a legacy encoding ( e. g. 7-bit ASCII ).
ASCII and described
Unicode could be roughly described as " wide-body ASCII " that has been stretched to 16 bits to encompass the characters of all the world's living languages.
For instance, parity includes a single bit for any data word, so assuming ASCII words with 7-bits, Hamming described this as an ( 8, 7 ) code, with eight bits in total, of which 7 are data.
In 1991, an AMTOR extension was described that includes lower case and other printable ASCII characters.
Each triangle is described by twelve 32-bit-floating point numbers: three for the normal and then three for the X / Y / Z coordinate of each vertex – just as with the ASCII version of STL.
ASCII and .
The American Standard Code for Information Interchange ( ASCII, ;) is a character-encoding scheme originally based on the English alphabet.
ASCII codes represent text in computers, communications equipment, and other devices that use text.
Most modern character-encoding schemes are based on ASCII, though they support many additional characters.
ASCII developed from telegraphic codes.
Work on the ASCII standard began on October 6, 1960, with the first meeting of the American Standards Association's ( ASA ) X3. 2 subcommittee.
Compared to earlier telegraph codes, the proposed Bell code and ASCII were both ordered for more convenient sorting ( i. e., alphabetization ) of lists and added features for devices other than teleprinters.
The American Standard Code for Information Interchange ( ASCII ) was developed under the auspices of a committee of the American Standards Association, called the X3 committee, by its X3. 2 ( later X3L2 ) subcommittee, and later by that subcommittee's X3. 2. 4 working group.
The X3. 2 subcommittee designed ASCII based on earlier teleprinter encoding systems.
Like other character encodings, ASCII specifies a correspondence between digital bit patterns and character symbols ( i. e. graphemes and control characters ).
Before ASCII was developed, the encodings in use included 26 alphabetic characters, 10 numerical digits, and from 11 to 25 special graphic symbols.
To include all these, and control characters compatible with the Comité Consultatif International Téléphonique et Télégraphique ( CCITT ) International Telegraph Alphabet No. 2 ( ITA2 ) standard, Fieldata, and early EBCDIC, more than 64 codes were required for ASCII.
The standards committee decided against shifting, and so ASCII required at least a seven-bit code.
The committee decided it was important to support upper case 64-character alphabets, and chose to pattern ASCII so it could be reduced easily to a usable 64-character set of graphic codes.
With the other special characters and control codes filled in, ASCII was published as ASA X3. 4-1963, leaving 28 code positions without any assigned meaning, reserved for future standardization, and one unassigned control code.
The X3. 2. 4 task group voted its approval for the change to ASCII at its May 1963 meeting.
buffer and email
The Hayes Stack Chronograph, an external real-time clock and the Transet 1000, a printer buffer and primitive email box.
buffer and described
Roshan described his character as a " buffer " in a film that primarily focused on Amitabh Bachchan and Shahrukh Khan.
buffer and mechanism
S-DBR has a buffer at shipping and manages the flow of work across the drum through a load planning mechanism.
This mechanism is based on a so-called return stack buffer, which is a local mirror of the call stack.
Because of the nature of the separating mechanism, pH, buffer type, buffer concentration, and temperature all play important roles in controlling the separation.
Further changes were the use of large round Oleo buffers with a pneumatic withdrawal mechanism rather that the traditional coach style ( oval ) saddle buffer which relied on a pin and spring mechanism.
: More precisely: Intel P6 family microprocessors have both a ROB re-order buffer and a RAT register map mechanism.
Typically, this would be used to allow the buffer contents to occupy the same physical memory used by the underlying operating system for its native I / O operations, thus allowing the most direct transfer mechanism, and eliminating the need for any additional copying.
The answer, according to TMT, is that self-esteem is used as a buffer for people to help them cope with anxiety ; it is a coping mechanism set in place to help control their terror, along with realizing that humans are animals just trying to manage the universe around them.
buffer and overflow
In computer security and programming, a buffer overflow, or buffer overrun, is an anomaly where a program, while writing data to a buffer, overruns the buffer's boundary and overwrites adjacent memory.
A buffer overflow occurs when data written to a buffer, due to insufficient bounds checking, corrupts data values in memory addresses adjacent to the allocated buffer.
For example, if a networking service crashed due to buffer overflow, only the networking service's memory would be corrupted, leaving the rest of the system still functional.
* a buffer overflow,
Features significantly increased with 11i v2, with the addition of kernel-based intrusion detection, strong random number generation, stack buffer overflow protection, security partitioning, role-based access management, and various open-source security tools.
Various DoS-causing exploits such as buffer overflow can cause server-running software to get confused and fill the disk space or consume all available memory or CPU time.
One cause of bit slippage is overflow of a receive buffer that occurs when the transmitter's clock rate exceeds that of the receiver.
A frame slip should not be confused with a dropped frame where synchronization is not lost, as in the case of buffer overflow, for example.
* Buffer overflow, a situation whereby the incoming data size exceeds that which can be accommodated by a buffer
In this sense, it definitely is part of the TCB of the larger computer system that comprises the UNIX server, the user's browsers and the Web application ; in other words, breaching into the Web server through e. g. a buffer overflow may not be regarded as a compromise of the operating system proper, but it certainly constitutes a damaging exploit on the Web application.
Some debuggers also incorporate memory protection to avoid storage violations such as buffer overflow.
The OS handles tracking whether a physical line flowed to the next on the same logical line ; the three-line limit is fairly arbitrary but keeps lines below 128 characters and so reduces the chances of buffer overflow.
There have been instances of malware crafted to exploit vulnerabilities in some Windows applications which could cause a stack-based buffer overflow when opening a file with an overly long, unhandled filename extension.
Although titled " SQL slammer worm ", the program did not use the SQL language ; it exploited a buffer overflow bug in Microsoft's flagship SQL Server and Desktop Engine database products, for which a patch had been released six months earlier in MS02-039.
The worm was based on proof of concept code demonstrated at the Black Hat Briefings by David Litchfield, who had initially discovered the buffer overflow vulnerability that the worm exploited.
The worm spread itself using a common type of vulnerability known as a buffer overflow.
It did this by using a long string of the repeated character ' N ' to overflow a buffer, allowing the worm to execute arbitrary code and infect the machine.
Due to a buffer overflow, a vulnerable host interprets this string as computer instructions, propagating the worm.
Additionally, it used the pattern of repeating ' X ' characters instead of ' N ' characters to overflow the buffer.
1.749 seconds.