THREATPORT/VULNERABILITY/CVE-2013-4396
MEDIUM SEVERITY

CVE-2013-4396

X.Org X11 vulnerability

CVSS
6.5
EPSS
4.1%
EPSS pct
90th
Exploited
No known
Use-after-free vulnerability in the doImageText function in dix/dixfonts.c in the xorg-server module before 1.14.4 in X.Org X11 allows remote authenticated users to cause a denial of service (daemon crash) or possibly execute arbitrary code via a crafted ImageText request that triggers memory-allocation failure.
Affected vendor
X
Affected product
X.Org X11
CVSS vector
AV:N/AC:L/Au:S/C:P/I:P/A:P
Weakness type (CWE)
Published
2013-10-10

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring single-factor authentication. Successful exploitation leads to partial impact to confidentiality, partial impact to integrity, partial impact to availability.

Its EPSS score of 4.1% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 90% of all scored CVEs.

Check your external exposure to CVE-2013-4396

  • Confirm whether X X.Org X11 is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2013-4396.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2013-4396

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2013-4396 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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