A vulnerability was found in Nextcloud Server up to 11.0.2 (Cloud Software). It has been classified as problematic. Affected is some unknown processing of the component Search Module. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. 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. This is going to have an impact on integrity. CVE summarizes:

Nextcloud Server before 11.0.3 is vulnerable to an inadequate escaping leading to a XSS vulnerability in the search module. To be exploitable a user has to write or paste malicious content into the search dialogue.

The bug was discovered 05/08/2017. The weakness was disclosed 05/08/2017 (Website). The advisory is shared for download at nextcloud.com. This vulnerability is traded as CVE-2017-0890 since 11/30/2016. It is possible to launch the attack remotely. Required for exploitation is a authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007.

Upgrading to version 11.0.3 eliminates this vulnerability.

The entries 100936, 100935, 100934 and 100933 are pretty similar.

Productinfo

Type

• Cloud Software

Vendor

• Nextcloud

Name

• Server

Version

• 11.0.0
• 11.0.1
• 11.0.2

License

• open-source

CPE 2.3info

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CPE 2.2info

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