CVE-2021-32918
HIGHCVSS 7.5/10EPSS 2.11%
Last modified
CVE-2021-32918 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An issue was discovered in Prosody before 0.11.9. Default settings are susceptible to remote unauthenticated denial-of-service (DoS) attacks via memory exhaustion when running under Lua 5.2 or Lua 5.3.. EPSS estimates a 2.11% chance of exploitation in the next 30 days.
Description
An issue was discovered in Prosody before 0.11.9. Default settings are susceptible to remote unauthenticated denial-of-service (DoS) attacks via memory exhaustion when running under Lua 5.2 or Lua 5.3.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Prosody | Prosody | < 0.11.9 |
| Debian | Debian Linux | 10.0 |
| Fedoraproject | Fedora | 32 |
| Fedoraproject | Fedora | 33 |
| Fedoraproject | Fedora | 34 |
References
- http://www.openwall.com/lists/oss-security/2021/05/13/1Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/14/2Mailing List, Mitigation, Third Party Advisory
- https://blog.prosody.im/prosody-0.11.9-released/Release Notes, Vendor Advisory
- https://security.gentoo.org/glsa/202105-15Third Party Advisory
- https://www.debian.org/security/2021/dsa-4916Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/13/1Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/14/2Mailing List, Mitigation, Third Party Advisory
- https://blog.prosody.im/prosody-0.11.9-released/Release Notes, Vendor Advisory
- https://security.gentoo.org/glsa/202105-15Third Party Advisory
- https://www.debian.org/security/2021/dsa-4916Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-32918?
An issue was discovered in Prosody before 0.11.9. Default settings are susceptible to remote unauthenticated denial-of-service (DoS) attacks via memory exhaustion when running under Lua 5.2 or Lua 5.3.
How severe is CVE-2021-32918?
CVE-2021-32918 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.11% probability of exploitation in the next 30 days.
How do I fix CVE-2021-32918?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-32918?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST