Vulnerability · Published Aug 21, 2020 · Assigned by hackerone
CVE-2020-8227
Medium 6.8
In plain English
A medium-severity path traversal in Desktop Client. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 25.8% (higher than 98% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.8Medium
Exploit odds (30 days)25.8%top 2.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Missing sanitization of a server response in Nextcloud Desktop Client 2.6.4 for Linux allowed a malicious Nextcloud Server to store files outside of the dedicated sync directory.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | nextcloud-desktop | 3.0.1-1 | DEBIAN-CVE-2020-8227 |
| Debian:13 | nextcloud-desktop | 3.0.1-1 | DEBIAN-CVE-2020-8227 |
| Debian:14 | nextcloud-desktop | 3.0.1-1 | DEBIAN-CVE-2020-8227 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | Desktop Client | 2.6.5 |
Weakness: CWE-22
References
- https://hackerone.com/reports/590319 x_refsource_MISC
- https://nextcloud.com/security/advisory/?id=NC-SA-2020-032 x_refsource_MISC
- GLSA-202009-09 vendor-advisory, x_refsource_GENTOO