A vulnerability was found in Nextcloud Server and Enterprise Server 26.0.0/26.0.1 (Cloud Software). It has been classified as problematic. This affects an unknown code. The manipulation with an unknown input leads to a redirect vulnerability. CWE is classifying the issue as CWE-601. A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. This is going to have an impact on integrity. The summary by CVE is:

NextCloud Server and NextCloud Enterprise Server provide file storage for Nextcloud, a self-hosted productivity platform. Starting in version 26.0.0 and prior to version 26.0.2, an attacker could supply a URL that redirects an unsuspecting victim from a legitimate domain to an attacker's site. Nextcloud Server and Nextcloud Enterprise Server 26.0.2 contain a patch for this issue. No known workarounds are available.

The weakness was released 06/24/2023 as GHSA-h353-vvwv-j2r4. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2023-35171 since 06/14/2023. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1204.001 for this issue.

Upgrading to version 26.0.2 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Entries connected to this vulnerability are available at VDB-242113, VDB-245945, VDB-245946 and VDB-245947.

Productinfo

Type

• Cloud Software

Vendor

• Nextcloud

Name

• Enterprise Server
• Server

Version

• 26.0.0
• 26.0.1

License

• open-source

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Discussion