CVE-2021-32920
First published: Thu May 13 2021(Updated: )
Prosody before 0.11.9 allows Uncontrolled CPU Consumption via a flood of SSL/TLS renegotiation requests.
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 | <0.11.9 | |
| 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/55ef50d6cf65
- https://hg.prosody.im/trunk/rev/5a484bd050a7
- https://hg.prosody.im/trunk/rev/aaf9c6b6d18d
- https://security-tracker.debian.org/tracker/CVE-2021-32920
- 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-2021-32920?
CVE-2021-32920 is a vulnerability in Prosody before 0.11.9 that allows uncontrolled CPU consumption via a flood of SSL/TLS renegotiation requests.
How severe is CVE-2021-32920?
CVE-2021-32920 has a severity rating of high, with a CVSS score of 7.5.
Which software versions are affected by CVE-2021-32920?
The affected software versions include Prosody 0.11.2-1+deb10u4, 0.11.9-2+deb11u2, 0.12.3-1, and 0.12.4-1.
How can I fix CVE-2021-32920?
To fix CVE-2021-32920, update Prosody to version 0.11.9 or later.
Where can I find more information about CVE-2021-32920?
You can find more information about CVE-2021-32920 at the following references: [http://www.openwall.com/lists/oss-security/2021/05/13/1](http://www.openwall.com/lists/oss-security/2021/05/13/1), [http://www.openwall.com/lists/oss-security/2021/05/14/2](http://www.openwall.com/lists/oss-security/2021/05/14/2), [https://blog.prosody.im/prosody-0.11.9-released/](https://blog.prosody.im/prosody-0.11.9-released/)
- collector/security-tracker-debian
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- agent/references
- agent/severity
- agent/author
- agent/type
- agent/event
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- agent/last-modified-date
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- agent/tags
- collector/mitre-cve
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- package-manager/debian
- vendor/prosody
- canonical/prosody prosody
- vendor/debian
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- version/debian debian linux/10.0
- vendor/fedoraproject
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- version/fedoraproject fedora/32
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- version/fedoraproject fedora/34