Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a https://github.com/curl/curl
curl 7.7 to and including 7.77.0affected
References
- https://hackerone.com/reports/1223882 ↗
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FRUCW2UVNYUDZF72DQLFQR4PJEC6CF7V/ ↗
- http://seclists.org/fulldisclosure/2021/Sep/40 ↗
- http://seclists.org/fulldisclosure/2021/Sep/39 ↗
- https://www.oracle.com/security-alerts/cpuoct2021.html ↗
- https://security.netapp.com/advisory/ntap-20210902-0003/ ↗
- https://support.apple.com/kb/HT212805 ↗
- https://support.apple.com/kb/HT212804 ↗
- https://www.oracle.com/security-alerts/cpujan2022.html ↗
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf ↗
- https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf ↗
- https://security.gentoo.org/glsa/202212-01 ↗
- https://cert-portal.siemens.com/productcert/html/ssa-389290.html ↗
- https://cert-portal.siemens.com/productcert/html/ssa-484086.html ↗
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html ↗