CVE-2021-32920

Description

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

7.5

CVSS

Severity: High

CVSS 3.1 •

CVSS 2.0 •

EPSS 3.29% Top 15%

Vendor Advisory debian.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory prosody.im

Affected: n/a n/a

References

Link	Tags
https://blog.prosody.im/prosody-0.11.9-released/	release notes vendor advisory
http://www.openwall.com/lists/oss-security/2021/05/13/1	third party advisory mailing list
http://www.openwall.com/lists/oss-security/2021/05/14/2	mailing list third party advisory mitigation
https://www.debian.org/security/2021/dsa-4916	third party advisory vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6MFFBZWXKPZEVZNQSVJNCUE7WRF3T7DG/	vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LWJ2DG2DFJOEFEWOUN26IMYYWGSA2ZEE/	vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GUN63AHEWB2WRROJHU3BVJRWLONCT2B7/	vendor advisory
https://security.gentoo.org/glsa/202105-15	third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-32920?: CVE-2021-32920 has been scored as a high severity vulnerability.
How to fix CVE-2021-32920?: To fix CVE-2021-32920, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-32920 being actively exploited in the wild?: It is possible that CVE-2021-32920 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.