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osvGoogleOSV:CVE-2021-22925
HistoryAug 05, 2021 - 9:15 p.m.

CVE-2021-22925

2021-08-0521:15:11
Google
osv.dev
12

EPSS

0.004

Percentile

74.4%

curl supports the -t command line option, known as CURLOPT_TELNETOPTIONSin 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.