A security issue has been found in curl before version 7.77.0. 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.
www.openwall.com/lists/oss-security/2021/07/21/4
cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
curl.se/docs/CVE-2021-22898.html
github.com/curl/curl/commit/39ce47f219b09c380b81f89fe54ac586c8db6bde
hackerone.com/reports/1176461
lists.apache.org/thread.html/rc713534b10f9daeee2e0990239fa407e2118e4aa9e88a7041177497c@%3Cissues.guacamole.apache.org%3E
lists.debian.org/debian-lts-announce/2021/08/msg00017.html
lists.fedoraproject.org/archives/list/[email protected]/message/FRUCW2UVNYUDZF72DQLFQR4PJEC6CF7V/
lists.fedoraproject.org/archives/list/[email protected]/message/POOC3UV7V6L4CJ5KA2PTWTNUV5Y72T3Q/
secdb.alpinelinux.org/edge/main.yaml
secdb.alpinelinux.org/v3.10/main.yaml
secdb.alpinelinux.org/v3.11/main.yaml
secdb.alpinelinux.org/v3.13/main.yaml
www.oracle.com//security-alerts/cpujul2021.html
www.oracle.com/security-alerts/cpuapr2022.html
www.oracle.com/security-alerts/cpujan2022.html