Symeon Paraschoudis discovered that the curl_easy_duphandle() function in cURL, an URL transfer library, has a bug that can lead to libcurl eventually sending off sensitive data that was not intended for sending, while performing a HTTP POST operation. This bug requires CURLOPT_COPYPOSTFIELDS and curl_easy_duphandle() to be used in that order, and then the duplicate handle must be used to perform the HTTP POST. The curl command line tool is not affected by this problem as it does not use this sequence.

For the stable distribution (wheezy), this problem has been fixed in version 7.26.0-1+wheezy11. For the upcoming stable distribution (jessie), this problem will be fixed in version 7.38.0-3. For the unstable distribution (sid), this problem has been fixed in version 7.38.0-3. We recommend that you upgrade your curl packages.

curl is a command line tool for transferring data with URL syntax, supporting DICT, FILE, FTP, FTPS, GOPHER, HTTP, HTTPS, IMAP, IMAPS, LDAP, POP3, POP3S, RTMP, RTSP, SCP, SFTP, SMTP, SMTPS, TELNET and TFTP.

curl on Debian Linux

This check tests the installed software version using the apt package manager.

• http://www.debian.org/security/2014/dsa-3069.html

---

Updated on 2015-03-25