CVE-2014-8090

Ruby vulnerability

CVSS

5.0

EPSS

5.6%

EPSS pct

92th

Exploited

No known

The REXML parser in Ruby 1.9.x before 1.9.3 patchlevel 551, 2.0.x before 2.0.0 patchlevel 598, and 2.1.x before 2.1.5 allows remote attackers to cause a denial of service (CPU and memory consumption) a crafted XML document containing an empty string in an entity that is used in a large number of nested entity references, aka an XML Entity Expansion (XEE) attack. NOTE: this vulnerability exists because of an incomplete fix for CVE-2013-1821 and CVE-2014-8080.

Affected vendor

Ruby Lang

Affected product

Ruby

CVSS vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Published

2014-11-21

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to partial impact to availability.

Its EPSS score of 5.6% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 92% of all scored CVEs.

Check your external exposure to CVE-2014-8090

Confirm whether Ruby Lang Ruby is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2014-8090.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2014-8090

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2014-8090 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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