CVE-2011-4302

Severity: medium (CVSS 6.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2012-07-11 · updated 2026-06-16
Weakness: CWE-20

Description

mnet/xmlrpc/client.php in MNET in Moodle 1.9.x before 1.9.14, 2.0.x before 2.0.5, and 2.1.x before 2.1.2 does not properly process the return value of the openssl_verify function, which allows remote attackers to bypass validation via a crafted certificate.

Affected products

Moodle: 1.9.2, 1.9.3, 1.9.4, 1.9.5, 1.9.6, 1.9.7 (+13)

References

http://git.moodle.org/gw?p=moodle.git%3Ba=commit%3Bh=54941685e3e86ec085641dcb7ebb1f96f06735b2
http://moodle.org/mod/forum/discuss.php?d=188314
https://bugzilla.redhat.com/show_bug.cgi?id=747444
http://git.moodle.org/gw?p=moodle.git%3Ba=commit%3Bh=54941685e3e86ec085641dcb7ebb1f96f06735b2
http://moodle.org/mod/forum/discuss.php?d=188314
https://bugzilla.redhat.com/show_bug.cgi?id=747444

Get alerted when CVE-2011-4302 or the next vulnerability affects your stack