Open-Xchange OX AppSuite Backend task id access control

Summaryinfo

A vulnerability marked as problematic has been reported in Open-Xchange OX AppSuite up to 7.6.3-rev35/7.8.3-rev38/7.8.3-rev43/7.8.4-rev21. Affected is an unknown function of the component Backend. Performing a manipulation of the argument task id results in access control. This vulnerability was named CVE-2018-5756. The attack may be initiated remotely. In addition, an exploit is available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Open-Xchange OX AppSuite up to 7.6.3-rev35/7.8.3-rev38/7.8.3-rev43/7.8.4-rev21 (Groupware Software). This affects an unknown code of the component Backend. The manipulation of the argument task id with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on integrity, and availability. The summary by CVE is:

The backend component in Open-Xchange OX App Suite before 7.6.3-rev36, 7.8.x before 7.8.2-rev39, 7.8.3 before 7.8.3-rev44, and 7.8.4 before 7.8.4-rev22 does not properly check for folder-to-object association, which allows remote authenticated users to delete arbitrary tasks via the task id in a delete action to api/tasks.

The bug was discovered 06/08/2018. The weakness was presented 06/16/2018 as EDB-ID 44881 as not defined exploit (Exploit-DB). The advisory is shared at exploit-db.com. This vulnerability is uniquely identified as CVE-2018-5756 since 01/17/2018. The exploitability is told to be easy. It is possible to initiate the attack remotely. A authentication is needed for exploitation. Technical details and a public exploit are known. MITRE ATT&CK project uses the attack technique T1068 for this issue.

After immediately, there has been an exploit disclosed. The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 7 days. During that time the estimated underground price was around $0-$5k.

Applying the patch 7.6.3-rev36/7.8.3-rev39/7.8.3-rev44/7.8.4-rev22 is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at Exploit-DB (44881). See VDB-119597, VDB-119609, VDB-119608 and VDB-119610 for similar entries. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Groupware Software

Vendor

• Open-Xchange

Name

• OX AppSuite

Version

• 7.6.3-rev35
• 7.8.3-rev38
• 7.8.3-rev43
• 7.8.4-rev21

License

• open-source

Website

• Vendor: https://www.open-xchange.com/

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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