Stack-based buffer overflow in the Curl_sasl_create_digest_md5_message function in lib/curl_sasl.c in curl and libcurl 7.26.0 through 7.28.1, when negotiating SASL DIGEST-MD5 authentication, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long string in the realm parameter in a (1) POP3, (2) SMTP or (3) IMAP message.
blog.volema.com/curl-rce.html
curl.haxx.se/docs/adv_20130206.html
lists.apple.com/archives/security-announce/2013/Oct/msg00004.html
nakedsecurity.sophos.com/2013/02/10/anatomy-of-a-vulnerability-curl-web-download-toolkit-holed-by-authentication-bug/
packetstormsecurity.com/files/120147/cURL-Buffer-Overflow.html
packetstormsecurity.com/files/120170/Slackware-Security-Advisory-curl-Updates.html
www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
www.osvdb.org/89988
www.securityfocus.com/bid/57842
www.securitytracker.com/id/1028093
www.ubuntu.com/usn/USN-1721-1
lists.fedoraproject.org/pipermail/package-announce/2013-February/099140.html
www.exploit-db.com/exploits/24487