THREATPORT/VULNERABILITY/CVE-2018-6521
CRITICAL SEVERITY

CVE-2018-6521

Simplesamlphp vulnerability

CVSS
9.8
EPSS
3.1%
EPSS pct
86th
Exploited
No known
The sqlauth module in SimpleSAMLphp before 1.15.2 relies on the MySQL utf8 charset, which truncates queries upon encountering four-byte characters. There might be a scenario in which this allows remote attackers to bypass intended access restrictions.
Affected vendor
Simplesamlphp
Affected product
Simplesamlphp
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2018-02-02

Risk analysis

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

Its EPSS score of 3.1% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 86% of all scored CVEs.

Check your external exposure to CVE-2018-6521

  • Confirm whether Simplesamlphp Simplesamlphp is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2018-6521.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2018-6521

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2018-6521 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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