Critical severity · published Sep 10, 2019
CVE-2019-11495
In Couchbase Server 5.1.1, the cookie used for intra-node communication was not generated securely
9.8
CVSS
2.1%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.1% · higher than 82% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CS
Couchbase Server · Couchbase
5.1.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-11495
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-11495
Broken Link
https://www.couchbase.com/resources/security#SecurityAlerts
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