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CVE-2016-8742

Status Candidate

Overview

The Windows installer that the Apache CouchDB team provides was vulnerable to local privilege escalation. All files in the install inherit the file permissions of the parent directory and therefore a non-privileged user can substitute any executable for the nssm.exe service launcher, or CouchDB batch or binary files. A subsequent service or server restart will then run that binary with administrator privilege. This issue affected CouchDB 2.0.0 (Windows platform only) and was addressed in CouchDB 2.0.0.1.

Related Files

Apache CouchDB 2.0.0 Local Privilege Escalation
Posted Dec 5, 2016
Authored by hyp3rlinx | Site hyp3rlinx.altervista.org

Apache CouchDB sets weak file permissions potentially allowing 'Standard' Windows users to elevate privileges. The "nssm.exe" (Apache CouchDB) executable can be replaced by a 'Standard' non administrator user, allowing them to add a backdoor Administrator account once the "Apache CouchDB" service is restarted or system rebooted. As Apache CouchDB runs as LOCALSYSTEM, standard users can now execute arbitrary code with the privileges of the SYSTEM. Version 2.0.0 is affected.

tags | exploit, arbitrary
systems | windows
advisories | CVE-2016-8742
SHA-256 | 68b1e098eddc65e76ee3877ef1fec35d1f90f759cb3fda181fd4c2b03a67aedf
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