What is the CVSS score of CVE-2021-29442?

CVE-2021-29442 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 64.7%.

Is there a public PoC exploit available for CVE-2021-29442?

Yes, a public proof-of-concept exploit is available for CVE-2021-29442. Prioritise patching immediately. EPSS: 64.7%.

Is there a patch available for CVE-2021-29442?

Yes, a patch is available for CVE-2021-29442. Update the affected software to the latest version immediately.

Alibaba CVE-2021-29442

HIGH

Missing Authentication for Critical Function (CWE-306)

2021-04-27 security-advisories@github.com

Authentication Bypass Alibaba Nacos

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

CVE Published

Apr 27, 2021 - 21:15 nvd

HIGH 7.5

Blast Radius

ecosystem impact

† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth

490 maven packages depend on com.alibaba.nacos:nacos-common (1 direct, 489 indirect)

Ecosystem-wide dependent count for version 1.4.1.

DescriptionNVD

Nacos is a platform designed for dynamic service discovery and configuration and service management. In Nacos before version 1.4.1, the ConfigOpsController lets the user perform management operations like querying the database or even wiping it out. While the /data/remove endpoint is properly protected with the @Secured annotation, the /derby endpoint is not protected and can be openly accessed by unauthenticated users. These endpoints are only valid when using embedded storage (derby DB) so this issue should not affect those installations using external storage (e.g. mysql)

AnalysisAI

Nacos is a platform designed for dynamic service discovery and configuration and service management. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified as Missing Authentication for Critical Function (CWE-306), which allows attackers to access critical functionality without authentication. Nacos is a platform designed for dynamic service discovery and configuration and service management. In Nacos before version 1.4.1, the ConfigOpsController lets the user perform management operations like querying the database or even wiping it out. While the /data/remove endpoint is properly protected with the @Secured annotation, the /derby endpoint is not protected and can be openly accessed by unauthenticated users. These endpoints are only valid when using embedded storage (derby DB) so this issue should not affect those installations using external storage (e.g. mysql) Affected products include: Alibaba Nacos. Version information: version 1.4.1.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Require authentication for all sensitive operations, implement defense in depth.