curl 7.7 through 7.76.1 suffers from an information disclosure when the `-t` command line option, known as `CURLOPT_TELNETOPTIONS` in libcurl, is used to send variable=content pairs to TELNET servers. Due to a 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, resulting in potentially revealing sensitive internal information to the server using a clear-text network protocol.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published: 2021-06-11T15:49:37

Updated: 2024-08-03T18:58:25.359Z

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

Link: CVE-2021-22898

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-06-11T16:15:11.043

Modified: 2024-11-21T05:50:52.103

Link: CVE-2021-22898

cve-icon Redhat

Severity : Low

Publid Date: 2021-05-26T00:00:00Z

Links: CVE-2021-22898 - Bugzilla