What is the CVSS score of CVE-2020-27818?

CVE-2020-27818 has a CVSS 3.1 base score of 3.3 (Low). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L. EPSS exploitation probability: 1.2%.

Pngcheck CVE-2020-27818

LOW

Classic Buffer Overflow (CWE-120)

2020-12-08 secalert@redhat.com

Buffer Overflow Denial Of Service Pngcheck Extra Packages For Enterprise Linux Fedora Debian Linux

3.3

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

3.3 LOW

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

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:L

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Lifecycle Timeline

CVE Published

Dec 08, 2020 - 01:15 nvd

LOW 3.3

DescriptionNVD

A flaw was found in the check_chunk_name() function of pngcheck-2.4.0. An attacker able to pass a malicious file to be processed by pngcheck could cause a temporary denial of service, posing a low risk to application availability.

AnalysisAI

A flaw was found in the check_chunk_name() function of pngcheck-2.4.0. Rated low severity (CVSS 3.3), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Buffer Copy without Size Check (CWE-120), which allows attackers to overflow a buffer to corrupt adjacent memory. A flaw was found in the check_chunk_name() function of pngcheck-2.4.0. An attacker able to pass a malicious file to be processed by pngcheck could cause a temporary denial of service, posing a low risk to application availability. Affected products include: Libpng Pngcheck, Fedoraproject Extra Packages For Enterprise Linux, Fedoraproject Fedora, Debian Debian Linux.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Always validate buffer sizes before copy operations. Use bounded functions (strncpy, snprintf). Enable compiler protections.