THREATPORT/VULNERABILITY/CVE-2022-0217
HIGH SEVERITY

CVE-2022-0217

Prosody vulnerability

CVSS
7.5
EPSS
4.6%
EPSS pct
91th
Exploited
No known
It was discovered that an internal Prosody library to load XML based on libexpat does not properly restrict the XML features allowed in parsed XML data. Given suitable attacker input, this results in expansion of recursive entity references from DTDs (CWE-776). In addition, depending on the libexpat version used, it may also allow injections using XML External Entity References (CWE-611).
Affected vendor
Prosody
Affected product
Prosody
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness type (CWE)
  • CWE-776 — XML Entity Expansion
  • CWE-611 — XML External Entity (XXE) Reference
Published
2022-08-26

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 availability.

Its EPSS score of 4.6% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 91% of all scored CVEs.

Check your external exposure to CVE-2022-0217

  • Confirm whether Prosody Prosody is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2022-0217.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2022-0217

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