CVE-2021-32918 json
An issue was discovered in Prosody before 0.11.9.
published 2021-05-13 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-19640
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.1%
- EPSS 2.1% chance of exploitation in 30 days, percentile 81%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- prosody prosody 0.11.9
- prosody Debian 14, Debian 13, Debian 12 0.11.9-1
debian advisories DEBIAN-CVE-2021-32918
- prosody openSUSE Tumbleweed 0.11.10-1.2
- prosody Package Hub 15 SP2 0.11.9-bp152.2.3.1
- prosody openSUSE Leap 15.2 0.11.9-lp152.2.3.1
opensuse advisories openSUSE-SU-2024:11197-1openSUSE-SU-2021:0751-1openSUSE-SU-2021:0728-1
- prosody Alpine 3.24, Alpine 3.23, Alpine 3.22 +10 more 0.11.9-r0
alpine advisories ALPINE-CVE-2021-32918
Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- prosody Arch Linux 1:0.11.9-1
arch linux advisories AVG-1955
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2021-32918 updated cvss 7.5
prosody: DoS via insufficient memory consumption controls
-
Red Hat All currently supported Red Hat productsnot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
2.11% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-400 Uncontrolled Resource Consumption
References
-
debian.org
/security/2021/dsa-4916
vendor-advisory, third-party-advisory
-
lists.fedoraproject.org
/archives/list/package-announce%40lists.fedoraproject.org/message/6MFFBZWXKPZEVZNQSVJNCUE7WRF3T7DG/
vendor-advisory
-
lists.fedoraproject.org
/archives/list/package-announce%40lists.fedoraproject.org/message/LWJ2DG2DFJOEFEWOUN26IMYYWGSA2ZEE/
vendor-advisory
-
lists.fedoraproject.org
/archives/list/package-announce%40lists.fedoraproject.org/message/GUN63AHEWB2WRROJHU3BVJRWLONCT2B7/
vendor-advisory
-
blog.prosody.im
/prosody-0.11.9-released/
release-notes, vendor-advisory
-
openwall.com
/lists/oss-security/2021/05/13/1
mailing-list, third-party-advisory
-
openwall.com
/lists/oss-security/2021/05/14/2
mailing-list, mitigation, third-party-advisory
-
security.gentoo.org
/glsa/202105-15
third-party-advisory
Sources
- CVE List CVE-2021-32918
- NVD CVE-2021-32918
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.