SB2019091048 - Code Injection in Couchbase Server
Published: September 10, 2019 Updated: August 8, 2020
Security Bulletin ID
SB2019091048
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Code Injection (CVE-ID: CVE-2019-11495)
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
In Couchbase Server 5.1.1, the cookie used for intra-node communication was not generated securely. Couchbase Server uses erlang:now() to seed the PRNG which results in a small search space for potential random seeds that could then be used to brute force the cookie and execute code against a remote system. This has been fixed in version 6.0.0.
Remediation
Install update from vendor's website.