CVE-2017-12635
CVSS V2 High 10
CVSS V3 Critical 9.8
Description
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.
Overview
- CVE ID
- CVE-2017-12635
- Assigner
- security@apache.org
- Vulnerability Status
- Modified
- Published Version
- 2017-11-14T20:29:00
- Last Modified Date
- 2019-10-03T00:03:26
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:apache:couchdb:*:*:*:*:*:*:*:* | 1 | OR | 1.7.0 | |
| cpe:2.3:a:apache:couchdb:2.0.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:apache:couchdb:2.0.0:rc1:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:apache:couchdb:2.0.0:rc2:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:apache:couchdb:2.0.0:rc3:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:apache:couchdb:2.0.0:rc4:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:C/I:C/A:C
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- COMPLETE
- Integrity Impact
- COMPLETE
- Availability Impact
- COMPLETE
- Base Score
- 10
- Severity
- HIGH
- Exploitability Score
- 10
- Impact Score
- 10
CVSS Version 3
- Version
- 3.0
- Vector String
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 9.8
- Base Severity
- CRITICAL
- Exploitability Score
- 3.9
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://lists.apache.org/thread.html/6c405bf3f8358e6314076be9f48c89a2e0ddf00539906291ebdf0c67@%3Cdev.couchdb.apache.org%3E | Mailing List Vendor Advisory |
| http://www.securityfocus.com/bid/101868 | Third Party Advisory VDB Entry |
| https://security.gentoo.org/glsa/201711-16 | Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2018/01/msg00026.html | |
| https://www.exploit-db.com/exploits/44498/ | |
| https://www.exploit-db.com/exploits/45019/ | |
| https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbmu03935en_us |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2017-12635 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12635 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 17:21:16 | Added to TrackCVE | |||
| 2022-12-02 22:59:54 | 2017-11-14T20:29Z | 2017-11-14T20:29:00 | CVE Published Date | updated |
| 2022-12-02 22:59:54 | 2019-10-03T00:03:26 | CVE Modified Date | updated | |
| 2022-12-02 22:59:54 | Modified | Vulnerability Status | updated |