CVE-2021-39179 Information

Description

DHIS 2 is an information system for data capture management validation analytics and visualization. A SQL Injection vulnerability in the Tracker component in DHIS2 Server allows authenticated remote attackers to execute arbitrary SQL commands via unspecified vectors. This vulnerability affects the /api/trackedEntityInstances and /api/trackedEntityInstances/query API endpoints in all DHIS2 versions 2.34 2.35 and 2.36. It also affects versions 2.32 and 2.33 which have reached end of support - exceptional security updates have been added to the latest end of support builds for these versions. Versions 2.31 and older are unaffected. The system is vulnerable to attack only from users that are logged in to DHIS2 and there is no known way of exploiting the vulnerability without first being logged in as a DHIS2 user. The vulnerability is not exposed to a non-malicious user - the vulnerability requires a conscious attack to be exploited. A successful exploit of this vulnerability could allow the malicious user to read edit and delete data in the DHIS2 instance. There are no known exploits of the security vulnerabilities addressed by these patch releases. Security patches are available in DHIS2 versions 2.32-EOS 2.33-EOS 2.34.7 2.35.7 and 2.36.4. There is no straightforward known workaround for DHIS2 instances using the Tracker functionality other than upgrading the affected DHIS2 server to one of the patches in which this vulnerability has been fixed. For implementations which do NOT use Tracker functionality it may be possible to block all network access to POST to the /api/trackedEntityInstances and /api/trackedEntityInstances/query endpoints as a temporary workaround while waiting to upgrade.

CVSS Vector

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

Reference

https://github.com/dhis2/dhis2-core/security/advisories/GHSA-cmpc-frjv-rrmw https://github.com/dhis2/dhis2-core/commit/16674ac75127b0e83691c6b1c9ce745e67ab58b6 https://github.com/dhis2/dhis2-core/pull/8771

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8