THREATPORT/VULNERABILITY/CVE-2019-17624
HIGH SEVERITY

CVE-2019-17624

X Server vulnerability

CVSS
7.8
EPSS
3.7%
EPSS pct
89th
Exploited
No known
"" In X.Org X Server 1.20.4, there is a stack-based buffer overflow in the function XQueryKeymap. For example, by sending ct.c_char 1000 times, an attacker can cause a denial of service (application crash) or possibly have unspecified other impact. Note: It is disputed if the X.Org X Server is involved or if there is a stack overflow.
Affected vendor
X.Org
Affected product
X Server
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
Published
2019-10-16

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable with local access, low attack complexity, requiring low privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 3.7% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 89% of all scored CVEs.

Check your external exposure to CVE-2019-17624

  • Confirm whether X.Org X Server is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2019-17624.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2019-17624

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2019-17624 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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