Vulnerability Details : CVE-2016-9459
Potential exploit
Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4 are vulnerable to a log pollution vulnerability potentially leading to a local XSS. The download log functionality in the admin screen is delivering the log in JSON format to the end-user. The file was delivered with an attachment disposition forcing the browser to download the document. However, Firefox running on Microsoft Windows would offer the user to open the data in the browser as an HTML document. Thus any injected data in the log would be executed.
Vulnerability category: Cross site scripting (XSS)
Products affected by CVE-2016-9459
- cpe:2.3:a:owncloud:owncloud:*:*:*:*:*:*:*:*
- cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2016-9459
0.86%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 73 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2016-9459
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:P/A:N |
8.6
|
2.9
|
NIST | |
|
6.1
|
MEDIUM | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
2.8
|
2.7
|
NIST |
CWE ids for CVE-2016-9459
-
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.Assigned by: nvd@nist.gov (Primary)
-
The product generates an error message that includes sensitive information about its environment, users, or associated data.Assigned by: support@hackerone.com (Secondary)
References for CVE-2016-9459
-
https://github.com/owncloud/core/commit/044ee072a647636b1a17c89265c7233b35371335
[stable8.1] Set content type when downloading log file to force downl… · owncloud/core@044ee07 · GitHubIssue Tracking;Patch;Third Party Advisory
-
http://www.securityfocus.com/bid/97284
ownCloud and Nextcloud CVE-2016-9459 HTML Injection VulnerabilityThird Party Advisory;VDB Entry
-
https://github.com/nextcloud/server/commit/94975af6db1551c2d23136c2ea22866a5b416070
[stable9] Set content-type to "application/octet-stream" · nextcloud/server@94975af · GitHubIssue Tracking;Patch;Third Party Advisory
-
https://owncloud.org/security/advisory?id=oc-sa-2016-012
Security Advisories – ownCloudPatch;Vendor Advisory
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https://nextcloud.com/security/advisory/?id=nc-sa-2016-002
advisory – NextcloudPatch;Vendor Advisory
-
https://hackerone.com/reports/146278
#146278 Log pollution can lead to HTML Injection.Exploit;Third Party Advisory
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https://github.com/owncloud/core/commit/b7fa2c5dc945b40bc6ed0a9a0e47c282ebf043e1
[stable8.2] Set content type when downloading log file to force downl… · owncloud/core@b7fa2c5 · GitHubIssue Tracking;Patch;Third Party Advisory
-
https://github.com/owncloud/core/commit/efa35d621dc7ff975468e636a5d1c153511296dc
[stable9] Set content type when downloading log file to force downloa… · owncloud/core@efa35d6 · GitHubIssue Tracking;Patch;Third Party Advisory
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