Vulnerability DatabaseCVE-2015-5267
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CVE-2015-5267
Published:February 22, 2016
Updated:May 17, 2026
lib/moodlelib.php in Moodle through 2.6.11, 2.7.x before 2.7.10, 2.8.x before 2.8.8, and 2.9.x before 2.9.2 relies on the PHP mt_rand function to implement the random_string and complex_random_string functions, which makes it easier for remote attackers to predict password-recovery tokens via a brute-force approach.
Affected Packages
moodle/moodle (PHP):
Affected version(s) >=v2.9.0 <v2.9.2
Fix Suggestion:
Update to version v2.9.2
moodle/moodle (PHP):
Affected version(s) >=v2.8.0 <v2.8.8
Fix Suggestion:
Update to version v2.8.8
Related Resources (11)
https://github.com/moodle/moodle/commit/5337b2295237958c93b6c65fa595859aaa7bf257
https://github.com/moodle/moodle/commit/6e8224365ffcdf328458ea7852dc62574e806119
http://www.openwall.com/lists/oss-security/2015/09/21/1
http://www.securitytracker.com/id/1033619
https://web.archive.org/web/20160323063809/http://www.securitytracker.com/id/1033619
https://moodle.org/mod/forum/discuss.php?d=320291
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-50860
https://github.com/moodle/moodle/commit/e4ac3879c2d1f8fe66caa74ff1544248bccef61e
https://nvd.nist.gov/vuln/detail/CVE-2015-5267
https://github.com/moodle/moodle
https://github.com/moodle/moodle/commit/289bc7f9e3022918b4cfd2cc9851472f0cea2896
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CVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Exposure of Sensitive Information to an Unauthorized Actor
CWE-200
EPSS
Base Score:
0.40