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Rack CVE-2015-3225

MEDIUM
Data Processing Errors (CWE-19)
2015-07-26 secalert@redhat.com
Denial Of Service Debian Debian Linux Rack Opensuse Rack Project
5.0
CVSS 2.0 · NVD
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Vulnerability Assessment

Weakness
CWE
CWE-19
ASVS 5.0
V2 - Validation and Business Logic Data processing
Impact

CVSS score of 5.0 (MEDIUM). Attack characteristics: network attack vector, low complexity. EPSS exploitation probability: 13.25%.
Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system.
This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 13.3% exploitation probability (EPSS)

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AnalysisAI

lib/rack/utils.rb in Rack before 1.5.4 and 1.6.x before 1.6.2, as used with Ruby on Rails 3.x and 4.x and other products, allows remote attackers to cause a denial of service (SystemStackError) via a. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. Epss exploitation probability 13.3%.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affected Packages

rubygems rack fix: 1.4.6, 1.5.4, 1.6.2

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in rubygems

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Technical ContextAI · show details

This vulnerability is classified under CWE-19. lib/rack/utils.rb in Rack before 1.5.4 and 1.6.x before 1.6.2, as used with Ruby on Rails 3.x and 4.x and other products, allows remote attackers to cause a denial of service (SystemStackError) via a request with a large parameter depth. Affected products include: Rack Project Rack, Opensuse, Debian Debian Linux. Version information: before 1.5.4.

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

NVD PRIMARY 5.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Confidentiality
None
Integrity
None
Availability
P

DescriptionCVE.org

lib/rack/utils.rb in Rack before 1.5.4 and 1.6.x before 1.6.2, as used with Ruby on Rails 3.x and 4.x and other products, allows remote attackers to cause a denial of service (SystemStackError) via a request with a large parameter depth.

Threat Intelligence Overview

EPSS Score
13.3%
Top 6% exploitable
Data Quality
4 sources
Confidence: Medium
NVD CVE.org EPSS GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 13.3%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

38
Low Medium High Critical
KEV: 0
EPSS: +13
CVSS: +25
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Denial of Service MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)CVE.org

cpe:2.3:a:rack_project:rack:*:*:*:*:*:*:*:*
cpe:2.3:a:rack_project:rack:1.6.0:*:*:*:*:*:*:*
cpe:2.3:a:rack_project:rack:1.6.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

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Same weakness CWE-19 – Data Processing Errors

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References

Advisories & patches
PATCH https://github.com/rack/rack/blob/master/HISTORY.md REF http://lists.fedoraproject.org/pipermail/package-announce/2015-August/164173.html REF http://lists.fedoraproject.org/pipermail/package-announce/2015-August/165180.html REF http://lists.opensuse.org/opensuse-updates/2015-07/msg00040.html REF http://lists.opensuse.org/opensuse-updates/2015-07/msg00043.html REF http://lists.opensuse.org/opensuse-updates/2015-07/msg00044.html REF http://openwall.com/lists/oss-security/2015/06/16/14 REF http://rhn.redhat.com/errata/RHSA-2015-2290.html REF http://www.debian.org/security/2015/dsa-3322 REF http://www.securityfocus.com/bid/75232 REF https://groups.google.com/forum/message/raw?msg=rubyonrails-security/gcUbICUmKMc/qiCotVZwXrMJ

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