Information disclosure in MongoDB C\# Driver
CVE-2021-20331
Specific versions of the MongoDB C# Driver may erroneously publish events containing authentication-related data to a command listener configured by an application. The published events may contain security-sensitive data when commands such as "saslStart", "saslContinue", "isMaster", "createUser", and "updateUser" are executed. Without due care, an application may inadvertently expose this authenticated-related information, e.g., by writing it to a log file. This issue only arises if an application enables the command listener feature (this is not enabled by default). This issue affects the MongoDB C# Driver v2.12 versions prior to and including 2.12.1.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (47.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- MongoDB C\# Driver — versions 2.11.0
- MongoDB Inc. C# Driver — versions 2.12
Weakness classification (CWE)
References
- jira.mongodb.org/browse/CSHARP-3521 (Patch, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-20331?
- CVE-2021-20331 is a medium-severity vulnerability in MongoDB C\# Driver, classified under Information Disclosure. CVSS score: 4.2/10. Published 2021-05-13.
- How severe is CVE-2021-20331?
- Medium severity. CVSS v3 base score is 4.2 out of 10.