Access Control Vulnerability in Apache CouchDB Affecting Non-Admin Users
CVE-2017-12635

9.8CRITICAL

Key Information:

Vendor
Apache
Status
Apache Couchdb
Vendor
CVE Published:
14 November 2017

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 97%

Summary

Apache CouchDB versions prior to 1.7.0 and 2.1.1 are vulnerable due to discrepancies between the Erlang-based and JavaScript-based JSON parsers. This allows unauthorized users to submit _users documents with duplicate 'roles' keys, enabling them to grant themselves administrative privileges, including the '_admin' role. This exploit can lead to unauthorized access and potential execution of arbitrary commands on the server by leveraging the flawed access control mechanism within CouchDB.

Affected Version(s)

Apache CouchDB 1.2.0 to 1.6.1

Apache CouchDB 2.0.0 to 2.1.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

Metasploit exploit module for CVE-2017-12635
Created by Rapid7

CVE-2017-12635
Created by assalielmehdi

Apache-couchdb-CVE-2017-12635
Created by cyberharsh

References

https://www.exploit-db.com/exploits/44498/
exploitx_refsource_EXPLOIT-DB
https://www.exploit-db.com/exploits/45019/
exploitx_refsource_EXPLOIT-DB
https://lists.apache.org/thread.html/6c405bf3f8358e631407...
mailing-listx_refsource_MLIST

EPSS Score

97% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.