What is the CVSS score of CVE-2021-3504?

CVE-2021-3504 has a CVSS 3.1 base score of 5.4 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L. EPSS exploitation probability: 1.9%.

Is there a patch available for CVE-2021-3504?

Yes, a patch is available for CVE-2021-3504. Update the affected software to the latest version immediately.

Hivex CVE-2021-3504

MEDIUM

Out-of-bounds Read (CWE-125)

2021-05-11 secalert@redhat.com

Buffer Overflow Microsoft Information Disclosure Hivex Enterprise Linux Debian Linux Fedora

5.4

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.4 MEDIUM

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

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:L/I:N/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

Low

Lifecycle Timeline

CVE Published

May 11, 2021 - 23:15 nvd

MEDIUM 5.4

DescriptionNVD

A flaw was found in the hivex library in versions before 1.3.20. It is caused due to a lack of bounds check within the hivex_open function. An attacker could input a specially crafted Windows Registry (hive) file which would cause hivex to read memory beyond its normal bounds or cause the program to crash. The highest threat from this vulnerability is to system availability.

AnalysisAI

A flaw was found in the hivex library in versions before 1.3.20. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Out-of-bounds Read vulnerability could allow attackers to read data from memory outside the intended buffer boundaries.

Technical ContextAI

This vulnerability is classified as Out-of-bounds Read (CWE-125), which allows attackers to read data from memory outside the intended buffer boundaries. A flaw was found in the hivex library in versions before 1.3.20. It is caused due to a lack of bounds check within the hivex_open function. An attacker could input a specially crafted Windows Registry (hive) file which would cause hivex to read memory beyond its normal bounds or cause the program to crash. The highest threat from this vulnerability is to system availability. Affected products include: Redhat Hivex, Redhat Enterprise Linux, Debian Debian Linux, Fedoraproject Fedora. Version information: before 1.3.20..

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Validate array indices and buffer lengths. Use memory-safe languages. Enable AddressSanitizer during testing.