Vulnerability Details : CVE-2021-32920

Prosody before 0.11.9 allows Uncontrolled CPU Consumption via a flood of SSL/TLS renegotiation requests.

Published 2021-05-13 16:15:08

Updated 2022-07-12 17:42:04

Source MITRE

View at NVD, CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2021-32920

Probability of exploitation activity in the next 30 days: 0.31%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 66 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2021-32920

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Source
7.8	HIGH	AV:N/AC:L/Au:N/C:N/I:N/A:C	10.0	6.9	nvd@nist.gov
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Complete
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	nvd@nist.gov
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

References for CVE-2021-32920

https://blog.prosody.im/prosody-0.11.9-released/

Prosody 0.11.9 released | Prosodical Thoughts
Release Notes;Vendor Advisory

CVEs referencing this url
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6MFFBZWXKPZEVZNQSVJNCUE7WRF3T7DG/

[SECURITY] Fedora 33 Update: prosody-0.11.9-1.fc33 - package-announce - Fedora Mailing-Lists
Mailing List;Third Party Advisory

CVEs referencing this url
https://www.debian.org/security/2021/dsa-4916

Debian -- Security Information -- DSA-4916-1 prosody
Third Party Advisory

CVEs referencing this url
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GUN63AHEWB2WRROJHU3BVJRWLONCT2B7/

[SECURITY] Fedora 32 Update: prosody-0.11.9-1.fc32 - package-announce - Fedora Mailing-Lists
Mailing List;Third Party Advisory

CVEs referencing this url
http://www.openwall.com/lists/oss-security/2021/05/14/2

oss-security - Re: Prosody XMPP server advisory 2021-05-12 (multiple vulnerabilities)
Mailing List;Mitigation;Third Party Advisory

CVEs referencing this url
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LWJ2DG2DFJOEFEWOUN26IMYYWGSA2ZEE/

[SECURITY] Fedora 34 Update: prosody-0.11.9-1.fc34 - package-announce - Fedora Mailing-Lists
Mailing List;Third Party Advisory

CVEs referencing this url
https://security.gentoo.org/glsa/202105-15

Prosŏdy IM: Multiple vulnerabilities (GLSA 202105-15) — Gentoo security
Third Party Advisory

CVEs referencing this url
http://www.openwall.com/lists/oss-security/2021/05/13/1

oss-security - Prosody XMPP server advisory 2021-05-12 (multiple vulnerabilities)
Mailing List;Third Party Advisory

CVEs referencing this url

Products affected by CVE-2021-32920

Debian » Debian Linux » Version: 10.0
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Matching versions
Fedoraproject » Fedora » Version: 32
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
Matching versions
Fedoraproject » Fedora » Version: 33
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
Matching versions
Fedoraproject » Fedora » Version: 34
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
Matching versions
Prosody » Prosody
Versions before (<) 0.11.9
cpe:2.3:a:prosody:prosody:*:*:*:*:*:*:*:*
Matching versions