Argument injection vulnerability in Mail/sendmail.php in the Mail package 1.1.14, 1.2.0b2, and possibly other versions for PEAR allows remote attackers to read and write arbitrary files via a crafted $recipients parameter, and possibly other parameters, a different vulnerability than CVE-2009-4023.
http://lists.opensuse.org/opensuse-security-announce/2010-11/msg00001.html
http://pear.php.net/bugs/bug.php?id=16200
http://secunia.com/advisories/37458
http://www.debian.org/security/2009/dsa-1938
http://www.openwall.com/lists/oss-security/2009/11/23/8
http://www.openwall.com/lists/oss-security/2009/11/28/2