Vulnerability 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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Prosody | Prosody | >= 0.10.0, < 0.11.9 |
| Debian | Debian Linux | 10.0 |
| Fedoraproject | Fedora | 32 |
Related Weaknesses (CWE)
References
- 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.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.gentoo.org/glsa/202105-15Third Party Advisory
- https://www.debian.org/security/2021/dsa-4916Third Party Advisory
- 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.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.gentoo.org/glsa/202105-15Third Party Advisory
FAQ
What is CVE-2021-32919?
CVE-2021-32919 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 cor...
How severe is CVE-2021-32919?
CVE-2021-32919 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-32919?
Check the references section above for vendor advisories and patch information. Affected products include: Prosody Prosody, Debian Debian Linux, Fedoraproject Fedora.