What is the CVSS score of CVE-2021-23391?

CVE-2021-23391 has a CVSS 3.1 base score of 7.1 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H. EPSS exploitation probability: 0.4%.

Is there a public PoC exploit available for CVE-2021-23391?

Yes, a public proof-of-concept exploit is available for CVE-2021-23391. Prioritise patching immediately. EPSS: 0.4%.

Calipso CVE-2021-23391

HIGH

Path Traversal (CWE-22)

2021-06-07 report@snyk.io

Path Traversal Calipso

7.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.1 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Jun 07, 2021 - 21:15 nvd

HIGH 7.1

DescriptionNVD

This affects all versions of package calipso. It is possible for a malicious module to overwrite files on an arbitrary file system through the module install functionality.

AnalysisAI

This affects all versions of package calipso. Rated high severity (CVSS 7.1), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Path Traversal (CWE-22), which allows attackers to access files and directories outside the intended path. This affects all versions of package calipso. It is possible for a malicious module to overwrite files on an arbitrary file system through the module install functionality. Affected products include: Calipso Project Calipso.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate and canonicalize file paths. Use chroot or sandboxing. Reject input containing path separators or '../' sequences.