Home/CVE/An issue was discovered in Prosody before 0.11.9. The undocumented dialback_without_dialback option in mod_dialback enab
CVE

CVE-2021-32919

An issue was discovered in Prosody before 0.11.9. The undocumented dialback_without_dialback option in mod_dialback enab

An issue was discovered in Prosody before 0.11.9. The undocumented dialback_without_dialback option in mod_dialback enables an experimental feature for server-to-server authentication. It does not correctly authenticate remote server certificates, allowing a remote server to impersonate another server (when this option is enabled).

HIGH · CVSS 7.5 EPSS 0.00344
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-295Improper Certificate Validation
▤

Affected Products & Versions

3
prosody>= 0.10.0 and < 0.11.9
debian linuxall versions
fedoraproject fedoraall versions
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · cve@mitre.org
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 NVD13 May 2021 · 04:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
⚑

Vendor Advisories

3
suse-csafopenSUSE-SU-2024:11197-1
suse-csafopenSUSE-SU-2021:0751-1
suse-csafopenSUSE-SU-2021:0728-1
🔗

References & Sources

8
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.openwall.com/lists/oss-security/2021/05/13/1Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/05/14/2Mailing ListMitigationThird Party Advisory
https://blog.prosody.im/prosody-0.11.9-released/Release NotesVendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6MFFBZWXKPZEVZNQSVJNCUE7WRF3T7DG/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GUN63AHEWB2WRROJHU3BVJRWLONCT2B7/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LWJ2DG2DFJOEFEWOUN26IMYYWGSA2ZEE/
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