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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published: 2021-08-05T00:00:00

Updated: 2024-08-03T18:58:26.060Z

Reserved: 2021-01-06T00:00:00

Link: CVE-2021-22925

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-08-05T21:15:11.467

Modified: 2024-11-21T05:50:55.860

Link: CVE-2021-22925

cve-icon Redhat

Severity : Low

Publid Date: 2021-07-21T00:00:00Z

Links: CVE-2021-22925 - Bugzilla