Vulnerability in Nextcloud Server
CVE-2021-32705
Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.011, and 21.0.3, there was a lack of ratelimiting on the public DAV endpoint. This may have allowed an attacker to enumerate potentially valid share tokens or credentials. The issue was fixed in versions 19.0.13, 20.0.11, and 21.0.3. There are no known workarounds.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.017 (76.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 76.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000
Affected products
- Nextcloud Server
- Nextcloud Security-Advisories — versions < 19.0.13, >= 20.0.0, < 20.0.11, >= 21.0.0, < 21.0.3
- Fedoraproject Fedora — versions 33, 34
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/nextcloud/security-advisories/security/advisories/GHSA-fjv7-283f-5m54 (Third Party Advisory)
- github.com/nextcloud/server/pull/27610 (Patch, Third Party Advisory)
- hackerone.com/reports/1192159 (Permissions Required)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- security.gentoo.org/glsa/202208-17 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-32705?
- CVE-2021-32705 is a medium-severity vulnerability in Nextcloud Server, classified under CWE-799. CVSS score: 5.3/10. Published 2021-07-12.
- How severe is CVE-2021-32705?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2021-32705 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.