What is CVE-2019-11495?

CVE-2019-11495 is a critical-severity vulnerability in Couchbase Couchbase_server, classified under Incorrect Usage of Seeds in Pseudo-Random Number Generator (PRNG). CVSS score: 9.8/10. Published 2019-09-10.

How severe is CVE-2019-11495?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Couchbase Couchbase_server

CVE-2019-11495

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 use…

EPSS: 0.021 (80.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Couchbase Couchbase_server — versions 5.1.1
N/a — versions n/a

Weakness classification (CWE)

CWE-335 — Incorrect Usage of Seeds in Pseudo-Random Number Generator (PRNG)

References

cve@mitre.org (x_refsource_MISC, Broken Link, Vendor Advisory)

Frequently asked questions

What is CVE-2019-11495?: CVE-2019-11495 is a critical-severity vulnerability in Couchbase Couchbase_server, classified under Incorrect Usage of Seeds in Pseudo-Random Number Generator (PRNG). CVSS score: 9.8/10. Published 2019-09-10.
How severe is CVE-2019-11495?: Critical severity. CVSS v3 base score is 9.8 out of 10.