Уязвимость раскрытия конфиденциальной информации через некорректную обработку опции "-t" в curl и "CURLOPT_TELNETOPTIONS" в libcurl
Описание
curl поддерживает опцию командной строки -t, соответствующую параметру CURLOPT_TELNETOPTIONS в libcurl. Эта редко используемая опция предназначена для отправки пар вида variable=content на TELNET-серверы.
Из-за ошибки в парсере опций для передачи переменных NEW_ENV libcurl мог передавать неинициализированные данные из буфера, размещённого в стеке, на сервер. Это могло привести к потенциальному раскрытию конфиденциальной внутренней информации серверу через нешифрованный сетевой протокол.
Данная уязвимость возникала, потому что curl неправильно вызывал и использовал функцию sscanf() при парсинге строки, предоставленной приложением.
Тип уязвимости
Раскрытие конфиденциальной информации
Ссылки
- Mailing ListThird Party Advisory
- Mailing ListThird Party Advisory
- PatchThird Party Advisory
- Third Party Advisory
- ExploitIssue TrackingPatchThird Party Advisory
- Mailing ListThird Party Advisory
- Third Party Advisory
- Third Party Advisory
- Third Party Advisory
- Third Party Advisory
- PatchThird Party Advisory
- PatchThird Party Advisory
- Mailing ListThird Party Advisory
- Mailing ListThird Party Advisory
- PatchThird Party Advisory
- Third Party Advisory
- ExploitIssue TrackingPatchThird Party Advisory
- Mailing ListThird Party Advisory
- Third Party Advisory
- Third Party Advisory
Уязвимые конфигурации
Одно из
Одно из
Одно из
Одно из
Одновременно
Одновременно
Одновременно
Одновременно
Одновременно
Одновременно
Одновременно
Одно из
EPSS
5.3 Medium
CVSS3
5 Medium
CVSS2
Дефекты
Связанные уязвимости
curl supports the `-t` command line option, known as `CURLOPT_TELNETOPTIONS`in libcurl. This rarely used option is used to send variable=content pairs toTELNET servers.Due to flaw in the option parser for sending `NEW_ENV` variables, libcurlcould be made to pass on uninitialized data from a stack based buffer to theserver. Therefore potentially revealing sensitive internal information to theserver using a clear-text network protocol.This could happen because curl did not call and use sscanf() correctly whenparsing the string provided by the application.
curl supports the `-t` command line option, known as `CURLOPT_TELNETOPTIONS`in libcurl. This rarely used option is used to send variable=content pairs toTELNET servers.Due to flaw in the option parser for sending `NEW_ENV` variables, libcurlcould be made to pass on uninitialized data from a stack based buffer to theserver. Therefore potentially revealing sensitive internal information to theserver using a clear-text network protocol.This could happen because curl did not call and use sscanf() correctly whenparsing the string provided by the application.
curl supports the `-t` command line option, known as `CURLOPT_TELNETOP ...
curl supports the `-t` command line option, known as `CURLOPT_TELNETOPTIONS`in libcurl. This rarely used option is used to send variable=content pairs toTELNET servers.Due to flaw in the option parser for sending `NEW_ENV` variables, libcurlcould be made to pass on uninitialized data from a stack based buffer to theserver. Therefore potentially revealing sensitive internal information to theserver using a clear-text network protocol.This could happen because curl did not call and use sscanf() correctly whenparsing the string provided by the application.
EPSS
5.3 Medium
CVSS3
5 Medium
CVSS2