CVE-2017-12635

Summary

CVECVE-2017-12635
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-11-14 20:29:00 UTC
Updated2023-11-07 02:38:00 UTC
DescriptionDue to differences in the Erlang-based JSON parser and JavaScript-based JSON parser, it is possible in Apache CouchDB before 1.7.0 and 2.x before 2.1.1 to submit _users documents with duplicate keys for 'roles' used for access control within the database, including the special case '_admin' role, that denotes administrative users. In combination with CVE-2017-12636 (Remote Code Execution), this can be used to give non-admin users access to arbitrary shell commands on the server as the database system user. The JSON parser differences result in behaviour that if two 'roles' keys are available in the JSON, the second one will be used for authorising the document write, but the first 'roles' key is used for subsequent authorization for the newly created user. By design, users can not assign themselves roles. The vulnerability allows non-admin users to give themselves admin privileges.

Risk And Classification

Problem Types: CWE-269

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Apache Couchdb All All All All
Application Apache Couchdb 2.0.0 All All All
Application Apache Couchdb 2.0.0 rc1 All All
Application Apache Couchdb 2.0.0 rc2 All All
Application Apache Couchdb 2.0.0 rc3 All All
Application Apache Couchdb 2.0.0 rc4 All All
Application Apache Couchdb All All All All
Application Apache Couchdb 2.0.0 All All All
Application Apache Couchdb 2.0.0 rc1 All All
Application Apache Couchdb 2.0.0 rc2 All All
Application Apache Couchdb 2.0.0 rc3 All All
Application Apache Couchdb 2.0.0 rc4 All All

References

ReferenceSourceLinkTags
[SECURITY] [DLA 1252-1] couchdb security update MLIST lists.debian.org
Document Display | HPE Support Center CONFIRM support.hpe.com
Apache Mail Archives MLIST lists.apache.org Mailing List, Vendor Advisory
Apache CouchDB CVE-2017-12635 Remote Privilege Escalation Vulnerability BID www.securityfocus.com Third Party Advisory, VDB Entry
Apache CouchDB 1.7.0 / 2.x < 2.1.1 - Remote Privilege Escalation - Linux webapps Exploit EXPLOIT-DB www.exploit-db.com
CouchDB: Multiple vulnerabilities (GLSA 201711-16) — Gentoo security GENTOO security.gentoo.org Third Party Advisory
Apache CouchDB - Arbitrary Command Execution (Metasploit) - Linux remote Exploit EXPLOIT-DB www.exploit-db.com
Apache Mail Archives lists.apache.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 710477 Gentoo Linux CouchDB Multiple Vulnerabilities (GLSA 201711-16)
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