Resource exhaustion in Nextcloud Server
CVE-2022-29243
Nextcloud Server is the file server software for Nextcloud, a self-hosted productivity platform. Prior to versions 22.2.7 and 23.0.4, missing input-size validation of new session names allows users to create app passwords with long names. These long names are then loaded into memory on usage, resulting in impacted performance. Versions 22.2.7 and 23.0.4 contain a fix for this issue. There are currently no known workarounds available.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.015 (73.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 73.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
- Nextcloud Server
- Nextcloud Security-Advisories — versions < 22.2.7, >= 23.0.0, < 23.0.4
Weakness classification (CWE)
References
- github.com/nextcloud/security-advisories/security/advisories/GHSA-7cwm-qph5-4h5w (Third Party Advisory)
- github.com/nextcloud/server/pull/31658 (Patch, Third Party Advisory)
- hackerone.com/reports/1153138 (Third Party Advisory)
- security.gentoo.org/glsa/202208-17 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-29243?
- CVE-2022-29243 is a medium-severity vulnerability in Nextcloud Server, classified under Improper Input Validation. CVSS score: 4.3/10. Published 2022-05-31.
- How severe is CVE-2022-29243?
- Medium severity. CVSS v3 base score is 4.3 out of 10.