The process_bin_delete function in memcached.c in memcached 1.4.4 and other versions before 1.4.17, when running in verbose mode, allows remote attackers to cause a denial of service (segmentation fault) via a request to delete a key, which does not account for the lack of a null terminator in the key and triggers a buffer over-read when printing to stderr.

References

• https://nvd.nist.gov/vuln/detail/CVE-2013-0179
• https://bugzilla.redhat.com/show_bug.cgi?id=895054
• https://code.google.com/p/memcached/issues/attachmentText?id=306&aid=3060004000&name=0001-Fix-buffer-overrun-when-logging-key-to-delete-in-bin.patch&token=3GEzHThBL5cxmUrsYANkW03RrNY%3A1358179503096
• https://code.google.com/p/memcached/issues/detail?id=306
• https://code.google.com/p/memcached/wiki/ReleaseNotes1417
• http://secunia.com/advisories/56183
• http://www.openwall.com/lists/oss-security/2013/01/14/4
• http://www.openwall.com/lists/oss-security/2013/01/14/6
• http://www.securityfocus.com/bid/64978
• http://www.ubuntu.com/usn/USN-2080-1