Vulnerability Details : 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.
Products affected by CVE-2021-22879
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:a:nextcloud:desktop:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-22879
1.78%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 88 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-22879
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST |
CWE ids for CVE-2021-22879
-
The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.Assigned by: nvd@nist.gov (Primary)
-
The product receives input from an upstream component, but it does not restrict or incorrectly restricts the input before it is used as an identifier for a resource that may be outside the intended sphere of control.Assigned by: support@hackerone.com (Secondary)
References for CVE-2021-22879
-
https://hackerone.com/reports/1078002
Sign inExploit;Third Party Advisory
-
https://github.com/nextcloud/desktop/pull/2906
Validate sensitive URLs to onle allow http(s) schemes. by allexzander · Pull Request #2906 · nextcloud/desktop · GitHubPatch;Third Party Advisory
-
https://security.gentoo.org/glsa/202105-37
Nextcloud Desktop Client: User-assisted execution of arbitrary code (GLSA 202105-37) — Gentoo securityThird Party Advisory
-
https://nextcloud.com/security/advisory/?id=NC-SA-2021-008
advisory – NextcloudVendor Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MTWBJAS5DJJIK7LLVBZZQTSJASUVIRVE/
[SECURITY] Fedora 33 Update: nextcloud-client-3.1.3-1.fc33 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
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