High severity · published May 13, 2021
CVE-2021-32919
An issue was discovered in Prosody before 0.11.9
7.5
CVSS
1.4%
EPSS
No
On KEV
Description
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).
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 72% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
10.0 · source: NVD
FE
Fedora · Fedoraproject
32; 33; 34 · source: NVD
PR
Prosody · Prosody
0.10.0 before 0.11.9 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-32919
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-32919
Mailing List
http://www.openwall.com/lists/oss-security/2021/05/13/1
Mailing List
http://www.openwall.com/lists/oss-security/2021/05/14/2
Release Notes
https://blog.prosody.im/prosody-0.11.9-released/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6MFFBZWXKPZEVZNQSVJNCUE7WRF3T7DG/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GUN63AHEWB2WRROJHU3BVJRWLONCT2B7/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LWJ2DG2DFJOEFEWOUN26IMYYWGSA2ZEE/
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