Home/CVE/It was discovered that an internal Prosody library to load XML based on libexpat does not properly restrict the XML feat
CVE

CVE-2022-0217

It was discovered that an internal Prosody library to load XML based on libexpat does not properly restrict the XML feat

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).

HIGH · CVSS 7.5 EPSS 0.00411
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-611Improper Restriction of XML External Entity Reference
CWE-776Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
CWE-776Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
▤

Affected Products & Versions

1
prosody< 0.11.12
⚠

Public Exploits & PoCs

1
pocprosody.im · advisory_20220113prosody.im
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD26 Aug 2022 · 06:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

2
suse-csafopenSUSE-SU-2024:11736-1
suse-csafopenSUSE-SU-2022:0012-1
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://bugzilla.redhat.com/show_bug.cgi?id=2040639Issue TrackingThird Party Advisory
https://prosody.im/security/advisory_20220113/1.patchPatchVendor Advisory
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