Server-to-Server Authentication Vulnerability in Prosody XMPP Server
CVE-2021-32919

7.5HIGH

Key Information:

Vendor

Prosody

Status
Prosody
Vendor
CVE Published:
13 May 2021

What is CVE-2021-32919?

A vulnerability exists in Prosody XMPP Server versions before 0.11.9 due to an undocumented feature in mod_dialback that allows remote servers to impersonate other servers. This issue arises from incorrect authentication of remote server certificates when the dialback_without_dialback option is enabled, potentially compromising communication integrity between servers.

References

https://blog.prosody.im/prosody-0.11.9-released/
x_refsource_MISC
http://www.openwall.com/lists/oss-security/2021/05/13/1
mailing-listx_refsource_MLIST
http://www.openwall.com/lists/oss-security/2021/05/14/2
mailing-listx_refsource_MLIST

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.