CVE-2019-11467

HIGHCVSS 7.5/10EPSS 1.34%

Last modified

CVE-2019-11467 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. In Couchbase Server 4.6.3 and 5.5.0, secondary indexing encodes the entries to be indexed using collatejson. When index entries contain certain characters like \t, <, >, it caused buffer overrun as encoded string would be much larger than accounted for, causing indexer service to crash and restart. EPSS estimates a 1.34% chance of exploitation in the next 30 days.

Description

In Couchbase Server 4.6.3 and 5.5.0, secondary indexing encodes the entries to be indexed using collatejson. When index entries contain certain characters like \t, <, >, it caused buffer overrun as encoded string would be much larger than accounted for, causing indexer service to crash and restart. This has been remedied in versions 5.1.2 and 5.5.2 to ensure buffer always grows as needed for any input.

Metrics

CVSS 3.1
7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
1.34%

67.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CouchbaseCouchbase Server4.6.3
CouchbaseCouchbase Server5.5.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-11467?
In Couchbase Server 4.6.3 and 5.5.0, secondary indexing encodes the entries to be indexed using collatejson. When index entries contain certain characters like \t, <, >, it caused buffer overrun as encoded string would be much larger than accounted for, causing indexer service to crash and restart. This has been remedied in versions 5.1.2 and 5.5.2 to ensure buffer always grows as needed for any input.
How severe is CVE-2019-11467?
CVE-2019-11467 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.34% probability of exploitation in the next 30 days.
How do I fix CVE-2019-11467?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-11467?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST