|CVSS Meta Temp Score|
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
|Current Exploit Price (≈)|
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
|CTI Interest Score|
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A vulnerability was found in YARA up to 4.0.3. It has been rated as critical. This issue affects an unknown code block of the file libyara/modules/macho/macho.c of the component Mach-O File Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-120. Impacted is confidentiality, integrity, and availability. The summary by CVE is:
An integer overflow and several buffer overflow reads in libyara/modules/macho/macho.c in YARA v4.0.3 and earlier could allow an attacker to either cause denial of service or information disclosure via a malicious Mach-O file. Affects all versions before libyara 4.0.4
The weakness was shared 05/15/2021. The advisory is shared at bugzilla.redhat.com. The identification of this vulnerability is CVE-2021-3402 since 02/08/2021. The exploitation is known to be easy. Access to the local network is required for this attack. The requirement for exploitation is a simple authentication. Technical details are known, but no exploit is available.
Upgrading to version 4.0.4 eliminates this vulnerability.
CVSSv3VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3
VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍
VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
ExploitingClass: Memory corruption
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒
Threat IntelligenceInterest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍
0-Day Time: 🔒
Upgrade: YARA 4.0.4
Timeline02/08/2021 CVE assigned
05/15/2021 +95 days Advisory disclosed
05/15/2021 +0 days VulDB entry created
05/20/2021 +4 days VulDB last update
CVE: CVE-2021-3402 (🔒)
EntryCreated: 05/15/2021 06:29 PM
Updated: 05/20/2021 01:46 AM
Changes: (5) source_cve_assigned source_cve_nvd_summary vulnerability_cvss2_vuldb_tempscore vulnerability_cvss3_vuldb_tempscore vulnerability_cvss3_meta_tempscore
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