CVE-2021-32919
First published: Thu May 13 2021(Updated: )
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).
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/prosody | 0.11.2-1+deb10u4 0.11.9-2+deb11u2 0.12.3-1 0.12.4-1 | |
| Prosody Prosody | >=0.10.0<0.11.9 | |
| Debian Debian Linux | =10.0 | |
| Fedoraproject Fedora | =32 | |
| Fedoraproject Fedora | =33 | |
| Fedoraproject Fedora | =34 |
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Reference Links
- https://www.openwall.com/lists/oss-security/2021/05/13/1
- https://prosody.im/security/advisory_20210512.txt
- https://hg.prosody.im/trunk/rev/6be890ca492e
- https://hg.prosody.im/trunk/rev/d0e9ffccdef9
- https://security-tracker.debian.org/tracker/CVE-2021-32919
- http://www.openwall.com/lists/oss-security/2021/05/13/1
- http://www.openwall.com/lists/oss-security/2021/05/14/2
- https://blog.prosody.im/prosody-0.11.9-released/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6MFFBZWXKPZEVZNQSVJNCUE7WRF3T7DG/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GUN63AHEWB2WRROJHU3BVJRWLONCT2B7/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LWJ2DG2DFJOEFEWOUN26IMYYWGSA2ZEE/
- https://security.gentoo.org/glsa/202105-15
- https://www.debian.org/security/2021/dsa-4916
- 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/LWJ2DG2DFJOEFEWOUN26IMYYWGSA2ZEE/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GUN63AHEWB2WRROJHU3BVJRWLONCT2B7/
Frequently Asked Questions
What is CVE-2021-32919?
CVE-2021-32919 is an issue discovered in Prosody, a XMPP server, before version 0.11.9.
What is the severity of CVE-2021-32919?
CVE-2021-32919 has a severity level of high with a CVSS score of 7.5.
How does CVE-2021-32919 affect Prosody?
CVE-2021-32919 affects Prosody versions before 0.11.9.
What is the vulnerability in CVE-2021-32919?
The vulnerability in CVE-2021-32919 is the undocumented dialback_without_dialback option in mod_dialback, which enables an experimental feature for server-to-server authentication.
How can I fix CVE-2021-32919 in Prosody?
To fix CVE-2021-32919 in Prosody, you should update to version 0.11.9 or later.
- collector/security-tracker-debian
- collector/nvd-index
- agent/author
- agent/severity
- agent/references
- agent/weakness
- agent/type
- agent/event
- agent/description
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- agent/last-modified-date
- agent/softwarecombine
- agent/tags
- collector/mitre-cve
- source/MITRE
- package-manager/debian
- vendor/prosody
- canonical/prosody prosody
- version/prosody prosody/0.10.0
- vendor/debian
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- canonical/fedoraproject fedora
- version/fedoraproject fedora/32
- version/fedoraproject fedora/33
- version/fedoraproject fedora/34