Vulnerability in Nextcloud Desktop
CVE-2021-22879
Nextcloud Desktop Client prior to 3.1.3 is vulnerable to resource injection by way of missing validation of URLs, allowing a malicious server to execute remote commands. User interaction is needed for exploitation.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.047 (91.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 91.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.047 · newest: 0.047 · change: 0.000
Affected products
- Nextcloud Desktop
- Fedoraproject Fedora — versions 33
- Nextcloud Desktop Client — versions Fixed in 3.1.3
Weakness classification (CWE)
References
- hackerone.com/reports/1078002 (Exploit, Third Party Advisory)
- nextcloud.com/security/advisory/ (Vendor Advisory)
- github.com/nextcloud/desktop/pull/2906 (Patch, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- security.gentoo.org/glsa/202105-37 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-22879?
- CVE-2021-22879 is a high-severity vulnerability in Nextcloud Desktop, classified under Resource Injection. CVSS score: 8.8/10. Published 2021-04-14.
- How severe is CVE-2021-22879?
- High severity. CVSS v3 base score is 8.8 out of 10.