Directory traversal vulnerability in the min_get_slash_argument function in lib/configonlylib.php in Moodle through 2.5.9, 2.6.x before 2.6.8, 2.7.x before 2.7.5, and 2.8.x before 2.8.3 allows remote authenticated users to read arbitrary files via a .. (dot dot) in the file parameter, as demonstrated by reading PHP scripts.

References

• https://nvd.nist.gov/vuln/detail/CVE-2015-1493
• https://moodle.org/mod/forum/discuss.php?d=279956
• http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-48980
• http://git.moodle.org/gw?p=moodle.git;a=commit;h=af9a7937cc085f96bdbc4724cadec6eeae0242fc
• http://openwall.com/lists/oss-security/2015/02/04/15
• http://openwall.com/lists/oss-security/2015/02/09/2
• moodle/moodle@0289be1
• moodle/moodle@a72f2cc
• moodle/moodle@af9a793
• moodle/moodle@cc496f5