What is the CVSS score of CVE-2021-30121?

CVE-2021-30121 has a CVSS 3.1 base score of 6.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 4.8%.

Is there a public PoC exploit available for CVE-2021-30121?

Yes, a public proof-of-concept exploit is available for CVE-2021-30121. Prioritise patching immediately. EPSS: 4.8%.

Is there a patch available for CVE-2021-30121?

Yes, a patch is available for CVE-2021-30121. Update the affected software to the latest version immediately.

Vsa CVE-2021-30121

MEDIUM

Inclusion of Functionality from Untrusted Control Sphere (CWE-829)

2021-07-09 cve@mitre.org

Information Disclosure Vsa

6.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.5 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

CVE Published

Jul 09, 2021 - 14:15 nvd

MEDIUM 6.5

DescriptionNVD

Semi-authenticated local file inclusion The contents of arbitrary files can be returned by the webserver Example request: https://x.x.x.x/KLC/js/Kaseya.SB.JS/js.aspx?path=C:\Kaseya\WebPages\dl.asp A valid sessionId is required but can be easily obtained via CVE-2021-30118

AnalysisAI

Semi-authenticated local file inclusion The contents of arbitrary files can be returned by the webserver Example request: https://x.x.x.x/KLC/js/Kaseya.SB.JS/js.aspx?path=C:\Kaseya\WebPages\dl.asp. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified under CWE-829. Semi-authenticated local file inclusion The contents of arbitrary files can be returned by the webserver Example request: https://x.x.x.x/KLC/js/Kaseya.SB.JS/js.aspx?path=C:\Kaseya\WebPages\dl.asp A valid sessionId is required but can be easily obtained via CVE-2021-30118 Affected products include: Kaseya Vsa.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.