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CURL-CVE-2021-22925
No affected components available
curl supports the -t command line option, known as CURLOPT_TELNETOPTIONS
in libcurl. This rarely used option is used to send variable=content pairs to
TELNET servers.
Due to flaw in the option parser for sending NEW_ENV variables, libcurl
could be made to pass on uninitialized data from a stack based buffer to the
server. Therefore potentially revealing sensitive internal information to the
server using a clear-text network protocol.
This could happen because curl did not call and use sscanf() correctly when
parsing the string provided by the application.
The previous curl security vulnerability CVE-2021-22898 is almost identical to this one but the fix was insufficient so this security vulnerability remained.
Measures severity based on intrinsic characteristics of the vulnerability, independent of environment.
No exploitation activity has been observed at this time. Continue routine monitoring.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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