CVE-2021-35943 Auth bypass in n/a

What is CVE-2021-35943?

CVE-2021-35943 is a critical authentication bypass vulnerability in Couchbase Couchbase Server, published on 29 Sep 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Couchbase Server 6.5.x and 6.6.x through 6.6.2 has Incorrect Access Control. Externally managed users are not prevented from using an empty password, per RFC4513.

Weakness: CWE-287

Which versions are affected by CVE-2021-35943?

It affects 1 product.

Products include Couchbase Couchbase Server.

How do I fix CVE-2021-35943?

No fix has been published for CVE-2021-35943 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2021-35943 being exploited?

There is no known exploitation of CVE-2021-35943 in the wild and no public exploit code.

Other vulnerabilities in Couchbase Couchbase Server

• CVE-2024-0519 Google Chromium V8 Out-of-Bounds Memory Access Exploited High 8.8
• CVE-2023-3079 Google Chromium V8 Type Confusion Exploited High 8.8
• CVE-2023-2033 Google Chromium V8 Type Confusion Exploited High 8.8
• CVE-2023-49930 Missing authorization in n/a Critical 9.8
• CVE-2023-49931 Missing authorization in n/a Critical 9.8

All Couchbase Couchbase Server vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-cm7f-fcwh-gc62.