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.
Fix
Patch, vendor advisory and mitigation references on NVD 8
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf Patch, Third Party Advisory
- https://hackerone.com/reports/1223882 Exploit, Issue Tracking, Patch, Third Party Advisory
- https://www.oracle.com/security-alerts/cpujan2022.html Patch, Third Party Advisory
- https://www.oracle.com/security-alerts/cpuoct2021.html Patch, Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf Patch, Third Party Advisory
- https://hackerone.com/reports/1223882 Exploit, Issue Tracking, Patch, Third Party Advisory
- https://www.oracle.com/security-alerts/cpujan2022.html Patch, Third Party Advisory
- https://www.oracle.com/security-alerts/cpuoct2021.html Patch, Third Party Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 5.3 · haxx, fedoraproject, netappNVD modified 2026-10-14 11:16
Affected (CPE criteria) 36
cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*cpe:2.3:o:apple:mac_os_x:10.15.7:-:*:*:*:*:*:*cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-001:*:*:*:*:*:*cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-002:*:*:*:*:*:*cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-003:*:*:*:*:*:*cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-004:*:*:*:*:*:*cpe:2.3:o:apple:macos:11.0:*:*:*:*:*:*:*cpe:2.3:o:apple:macos:11.0.1:*:*:*:*:*:*:*cpe:2.3:o:apple:macos:11.1:*:*:*:*:*:*:*cpe:2.3:o:apple:macos:11.1.0:*:*:*:*:*:*:*cpe:2.3:o:apple:macos:11.2:*:*:*:*:*:*:*cpe:2.3:o:apple:macos:11.2.1:*:*:*:*:*:*:*cpe:2.3:o:apple:macos:11.3:*:*:*:*:*:*:*cpe:2.3:o:apple:macos:11.3.1:*:*:*:*:*:*:*cpe:2.3:o:apple:macos:11.4:*:*:*:*:*:*:*cpe:2.3:o:apple:macos:11.5:*:*:*:*:*:*:*cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.57:*:*:*:*:*:*:*cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.58:*:*:*:*:*:*:*cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.59:*:*:*:*:*:*:*cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:*cpe:2.3:a:siemens:sinema_remote_connect_server:*:*:*:*:*:*:*:*cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:*
References 27
- http://seclists.org/fulldisclosure/2021/Sep/39 Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2021/Sep/40 Mailing List, Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf Patch, Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf Third Party Advisory
- https://hackerone.com/reports/1223882 Exploit, Issue Tracking, Patch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FRUCW2UVNYUDZF72DQLFQR4PJEC6CF7V/ Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202212-01 Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210902-0003/ Third Party Advisory
- https://support.apple.com/kb/HT212804 Third Party Advisory
- https://support.apple.com/kb/HT212805 Third Party Advisory
- https://www.oracle.com/security-alerts/cpujan2022.html Patch, Third Party Advisory
- https://www.oracle.com/security-alerts/cpuoct2021.html Patch, Third Party Advisory
- http://seclists.org/fulldisclosure/2021/Sep/39 Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2021/Sep/40 Mailing List, Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf Patch, Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf Third Party Advisory
- https://hackerone.com/reports/1223882 Exploit, Issue Tracking, Patch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FRUCW2UVNYUDZF72DQLFQR4PJEC6CF7V/ Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202212-01 Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210902-0003/ Third Party Advisory
- https://support.apple.com/kb/HT212804 Third Party Advisory
- https://support.apple.com/kb/HT212805 Third Party Advisory
- https://www.oracle.com/security-alerts/cpujan2022.html Patch, Third Party Advisory
- https://www.oracle.com/security-alerts/cpuoct2021.html Patch, Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-389290.html
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
- https://cert-portal.siemens.com/productcert/html/ssa-484086.html