CVE-2015-4411

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 6.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2020-02-20 · updated 2026-06-17
Weakness: CWE-400

Description

The Moped::BSON::ObjecId.legal? method in mongodb/bson-ruby before 3.0.4 as used in rubygem-moped allows remote attackers to cause a denial of service (worker resource consumption) via a crafted string. NOTE: This issue is due to an incomplete fix to CVE-2015-4410.

Affected products

Fedoraproject Fedora: 21, 22
bson: before 3.0.4 — fixed in 3.0.4

How to fix

Upgrade to a fixed version: bson 3.0.4. Check the vendor advisory for mitigations.

References

http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161964.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161987.html
http://www.openwall.com/lists/oss-security/2015/06/06/3
http://www.securityfocus.com/bid/75045
https://bugzilla.redhat.com/show_bug.cgi?id=1229706
https://github.com/mongodb/bson-ruby/commit/976da329ff03ecdfca3030eb6efe3c85e6db9999
https://github.com/mongodb/bson-ruby/commit/fef6f75413511d653c76bf924a932374a183a24f#diff-8c8558c185bbb548ccb5a6d6ac4bfee5R191
https://github.com/mongodb/bson-ruby/compare/7446d7c6764dfda8dc4480ce16d5c023e74be5ca...28f34978a85b689a4480b4d343389bf4886522e7
https://github.com/mongoid/moped/commit/dd5a7c14b5d2e466f7875d079af71ad19774609b#diff-3b93602f64c2fe46d38efd9f73ef5358R24
https://homakov.blogspot.ru/2012/05/saferweb-injects-in-various-ruby.html
https://sakurity.com/blog/2015/06/04/mongo_ruby_regexp.html
https://seclists.org/oss-sec/2015/q2/653

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