GoogleOSV:GHSA-P497-37FC-XVVCMoodle allows attackers to cause a denial of service
filter/mediaplugin/filter.php in Moodle through 2.5.9, 2.6.x before 2.6.7, 2.7.x before 2.7.4, and 2.8.x before 2.8.2 allows remote authenticated users to cause a denial of service (CPU consumption or partial outage) via a crafted string that is matched against an improper regular expression.
References
git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-48546
openwall.com/lists/oss-security/2015/01/19/1
github.com/moodle/moodle
github.com/moodle/moodle/commit/01da07a42be0f69de9f316be6ee8cb25ecd60c19
github.com/moodle/moodle/commit/25191bc31187f6381ad9fc690b653414ea3bc6d4
github.com/moodle/moodle/commit/531492a32cf77f90bc48c4868a5f71dd7040049f
github.com/moodle/moodle/commit/5329d84f0b5767f5bb800b203bfb89753ac35146
github.com/moodle/moodle/commit/63ed941a9363b6da3322df2b8de5be0d1df6d81a
github.com/moodle/moodle/commit/70229b7ec718ee3929109c54de74a8d14264a166
github.com/moodle/moodle/commit/d11969e7775b0fc1a2debf6ec91e42d25b0eeecd
moodle.org/mod/forum/discuss.php?d=278617
nvd.nist.gov/vuln/detail/CVE-2015-0217
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