What is the CVSS score of CVE-2021-38381?

CVE-2021-38381 has a CVSS 3.1 base score of 6.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H. EPSS exploitation probability: 1.2%.

Is there a public PoC exploit available for CVE-2021-38381?

Yes, a public proof-of-concept exploit is available for CVE-2021-38381. Prioritise patching immediately. EPSS: 1.2%.

Live555 CVE-2021-38381

MEDIUM

Use After Free (CWE-416)

2021-08-10 cve@mitre.org

Use After Free Denial Of Service Memory Corruption Live555

6.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.5 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

CVE Published

Aug 10, 2021 - 18:15 nvd

MEDIUM 6.5

DescriptionNVD

Live555 through 1.08 does not handle MPEG-1 or 2 files properly. Sending two successive RTSP SETUP commands for the same track causes a Use-After-Free and daemon crash.

AnalysisAI

Live555 through 1.08 does not handle MPEG-1 or 2 files properly. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Use After Free (CWE-416), which allows attackers to access freed memory to execute arbitrary code or crash the application. Live555 through 1.08 does not handle MPEG-1 or 2 files properly. Sending two successive RTSP SETUP commands for the same track causes a Use-After-Free and daemon crash. Affected products include: Live555. Version information: through 1.08.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use smart pointers or garbage-collected languages. Set pointers to NULL after freeing. Enable memory sanitizers.