THREATPORT/VULNERABILITY/CVE-2013-4391
HIGH SEVERITY

CVE-2013-4391

Systemd vulnerability

CVSS
7.5
EPSS
5.3%
EPSS pct
92th
Exploited
No known
Integer overflow in the valid_user_field function in journal/journald-native.c in systemd allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a large journal data field, which triggers a heap-based buffer overflow.
Affected vendor
Systemd Project
Affected product
Systemd
CVSS vector
AV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness type (CWE)
  • CWE-190 — Integer Overflow or Wraparound
Published
2013-10-28

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 confidentiality, partial impact to integrity, partial impact to availability.

Its EPSS score of 5.3% 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-2013-4391

  • Confirm whether Systemd Project Systemd is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2013-4391.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2013-4391

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2013-4391 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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