Published: 13/05/2021 Updated: 07/11/2023

CVSS v2 Base Score: 4.3 | Impact Score: 2.9 | Exploitability Score: 8.6

CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9

VMScore: 383

Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N

An issue exists in Prosody prior to 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).

Vulnerable Product	Search on Vulmon	Subscribe to Product
prosody prosody
debian debian linux 10.0
fedoraproject fedora 32
fedoraproject fedora 33
fedoraproject fedora 34

Debian Bug report logs - #988668 prosody: CVE-2021-32917 CVE-2021-32918 CVE-2021-32919 CVE-2021-32920 CVE-2021-32921 Package: src:prosody; Maintainer for src:prosody is Debian XMPP Maintainers <pkg-xmpp-devel@listsaliothdebianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg> Date: Mon, 17 May 2021 17:12:0 ...

Multiple security issues were found in Prosody, a lightweight Jabber/XMPP server, which could result in denial of service or information disclosure For the stable distribution (buster), these problems have been fixed in version 0112-1+deb10u1 We recommend that you upgrade your prosody packages For the detailed security status of prosody please ...

A security issue was found in the Prosodyim XMPP server software before version 0119 The undocumented option ‘dialback_without_dialback’ enabled an experimental feature for server-to-server authentication A flaw in this feature meant it did not correctly authenticate remote servers, allowing a remote server to impersonate another server wh ...

oss-sec mailing list archives   By Date By Thread </form>    Re: Prosody XMPP server advisory 2021-05-12 (multiple vulnerabilities)   ...

CWE-295 https://blog.prosody.im/prosody-0.11.9-released/http://www.openwall.com/lists/oss-security/2021/05/13/1 http://www.openwall.com/lists/oss-security/2021/05/14/2 https://www.debian.org/security/2021/dsa-4916 https://security.gentoo.org/glsa/202105-15 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/https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=988668 https://nvd.nist.gov https://www.debian.org/security/2021/dsa-4916

CVE-2021-32919

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