What is the CVSS score of CVE-2021-39545?

CVE-2021-39545 has a CVSS 3.1 base score of 5.5 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.6%.

Is there a public PoC exploit available for CVE-2021-39545?

Yes, a public proof-of-concept exploit is available for CVE-2021-39545. Prioritise patching immediately. EPSS: 0.6%.

Sela CVE-2021-39545

MEDIUM

NULL Pointer Dereference (CWE-476)

2021-09-20 cve@mitre.org

Null Pointer Dereference Denial Of Service Sela

5.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.5 MEDIUM

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

CVE Published

Sep 20, 2021 - 16:15 nvd

MEDIUM 5.5

DescriptionNVD

An issue was discovered in sela through 20200412. A NULL pointer dereference exists in the function rice::RiceDecoder::process() located in rice_decoder.c. It allows an attacker to cause Denial of Service.

AnalysisAI

An issue was discovered in sela through 20200412. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as NULL Pointer Dereference (CWE-476), which allows attackers to crash the application by dereferencing a null pointer. An issue was discovered in sela through 20200412. A NULL pointer dereference exists in the function rice::RiceDecoder::process() located in rice_decoder.c. It allows an attacker to cause Denial of Service. Affected products include: Sela Project Sela. Version information: through 20200412..

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Check pointers before dereferencing. Use static analysis tools to detect null pointer paths.