vulnerability
Arch Linux: Denial of service (CVE-2021-32920)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:L/Au:N/C:N/I:N/A:C) | May 13, 2021 | Jul 11, 2025 | Nov 27, 2025 |
Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
May 13, 2021
Added
Jul 11, 2025
Modified
Nov 27, 2025
Description
A security issue was found in the Prosody.im XMPP server software before version 0.11.9. It was discovered that Prosody does not disable SSL/TLS renegotiation, even though this is not used in XMPP. A malicious client may flood a connection with renegotiation requests to consume excessive CPU resources on the server.
Solution
arch-linux-upgrade-latest
References
- CVE-2021-32920
- https://attackerkb.com/topics/CVE-2021-32920
- URL-http://www.openwall.com/lists/oss-security/2021/05/13/1
- URL-http://www.openwall.com/lists/oss-security/2021/05/14/2
- URL-https://blog.prosody.im/prosody-0.11.9-released/
- URL-https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6MFFBZWXKPZEVZNQSVJNCUE7WRF3T7DG/
- URL-https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GUN63AHEWB2WRROJHU3BVJRWLONCT2B7/
- URL-https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LWJ2DG2DFJOEFEWOUN26IMYYWGSA2ZEE/
- URL-https://security.archlinux.org/ASA-202105-11
- URL-https://security.gentoo.org/glsa/202105-15
- URL-https://www.debian.org/security/2021/dsa-4916
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