CVE-2015-4411

Exp

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.

Published: 2020-02-20 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-4411 is rated High Exploit Risk (80.3/100): CVSS High severity, with high exploitation likelihood (EPSS 6.37%, 93th percentile). 2 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +2.84% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2015-4411

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2015-4411

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 3.53% 6.37% +2.84%
2 2026-04-22 3.08% 3.53% +0.45%
3 2025-03-30 — 3.08% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-4411

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2015-4411

GitHub Security Advisory for CVE-2015-4411

GHSA-qh4w-7pw3-p4rp · Severity: high · Ecosystem: rubygems — BSON rubygem contains potential denial of service

OS Trackers for CVE-2015-4411

vendor priority summary link
debian unimportant CVE-2015-4411 unimportant priority: Debian including 1 source packages (ruby-bson), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2015-4411
redhat low — https://access.redhat.com/security/cve/CVE-2015-4411
ubuntu medium CVE-2015-4411 medium priority: Ubuntu including 1 source packages (ruby-bson), 12 status rows across 12 suites (artful, bionic, cosmic, precise, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): ignored 6, not-affected 3, DNE 2, needs-triage 1. https://ubuntu.com/security/CVE-2015-4411

Affected software / configurations for CVE-2015-4411

Vendor Product Version Raw CPE
mongodb bson < 3.0.4 cpe:2.3:a:mongodb:bson:*:*:*:*:*:ruby:*:*
fedoraproject fedora 21 cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:*
fedoraproject fedora 22 cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*

References for CVE-2015-4411

URL Tags
http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161964.html Mailing List Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161987.html Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2015/06/06/3 Mailing List Third Party Advisory
http://www.securityfocus.com/bid/75045 Third Party Advisory VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1229706 Issue Tracking Third Party Advisory
https://github.com/mongodb/bson-ruby/commit/976da329ff03ecdfca3030eb6efe3c85e6db9999 Patch
https://github.com/mongodb/bson-ruby/commit/fef6f75413511d653c76bf924a932374a183a24f#diff-8c8558c185bbb548ccb5a6d6ac4bfee5R191 Patch
https://github.com/mongodb/bson-ruby/compare/7446d7c6764dfda8dc4480ce16d5c023e74be5ca...28f34978a85b689a4480b4d343389bf4886522e7 Patch
https://github.com/mongoid/moped/commit/dd5a7c14b5d2e466f7875d079af71ad19774609b#diff-3b93602f64c2fe46d38efd9f73ef5358R24 Patch
https://homakov.blogspot.ru/2012/05/saferweb-injects-in-various-ruby.html Exploit Third Party Advisory
https://sakurity.com/blog/2015/06/04/mongo_ruby_regexp.html Exploit Third Party Advisory
https://seclists.org/oss-sec/2015/q2/653 Mailing List Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2015-4411 Third Party Advisory
https://www.securityfocus.com/bid/75045 Third Party Advisory VDB Entry
cvelogic Threat Intelligence