CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
99.9%
Due 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.
Vendor | Product | Version | CPE |
---|---|---|---|
apache | couchdb | * | cpe:2.3:a:apache:couchdb:*:*:*:*:*:*:*:* |
apache | couchdb | 2.0.0 | cpe:2.3:a:apache:couchdb:2.0.0:*:*:*:*:*:*:* |
apache | couchdb | 2.0.0 | cpe:2.3:a:apache:couchdb:2.0.0:rc1:*:*:*:*:*:* |
apache | couchdb | 2.0.0 | cpe:2.3:a:apache:couchdb:2.0.0:rc2:*:*:*:*:*:* |
apache | couchdb | 2.0.0 | cpe:2.3:a:apache:couchdb:2.0.0:rc3:*:*:*:*:*:* |
apache | couchdb | 2.0.0 | cpe:2.3:a:apache:couchdb:2.0.0:rc4:*:*:*:*:*:* |
www.securityfocus.com/bid/101868
lists.apache.org/thread.html/6c405bf3f8358e6314076be9f48c89a2e0ddf00539906291ebdf0c67%40%3Cdev.couchdb.apache.org%3E
lists.debian.org/debian-lts-announce/2018/01/msg00026.html
security.gentoo.org/glsa/201711-16
support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbmu03935en_us
www.exploit-db.com/exploits/44498/
www.exploit-db.com/exploits/45019/
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
99.9%