VDB-191864 · CVE-2021-4160 · Nessus 211827

OpenSSL up to 1.0.2/1.1.1l/3.0.0 EC Handler information disclosure

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 Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.4	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in OpenSSL up to 1.0.2/1.1.1l/3.0.0. This affects an unknown part of the component EC Handler. Such manipulation leads to information disclosure. This vulnerability is traded as CVE-2021-4160. The attack may be launched remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in OpenSSL up to 1.0.2/1.1.1l/3.0.0 (Network Encryption Software). Affected by this issue is an unknown functionality of the component EC Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality.

The weakness was shared 01/29/2022. The advisory is shared for download at openssl.org. This vulnerability is handled as CVE-2021-4160 since 12/23/2021. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1592.

The vulnerability scanner Nessus provides a plugin with the ID 211827 (Oracle Linux 9 : edk2 (ELSA-2024-12842)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.1.1m or 3.0.1 eliminates this vulnerability. Applying the patch 3bf7b73ea7123045b8f972badc67ed6878e6c37f is able to eliminate this problem. The bugfix is ready for download at git.openssl.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (211827). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Network Encryption Software

Name

OpenSSL

Version

License

open-source

Website

Product: https://www.openssl.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.5
VulDB Meta Temp Score: 4.4

VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 211827
Nessus Name: Oracle Linux 9 : edk2 (ELSA-2024-12842)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: OpenSSL 1.1.1m/3.0.1
Patch: 3bf7b73ea7123045b8f972badc67ed6878e6c37f

Timelineinfo

12/23/2021 🔍
01/29/2022 +37 days 🔍
01/29/2022 +0 days 🔍
11/26/2024 +1032 days 🔍

Sourcesinfo

Product: openssl.org

Advisory: openssl.org
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-4160 (🔍)
GCVE (CVE): GCVE-0-2021-4160
GCVE (VulDB): GCVE-100-191864

Entryinfo

Created: 01/29/2022 08:13
Updated: 11/26/2024 07:35
Changes: 01/29/2022 08:13 (41), 01/30/2022 14:50 (2), 06/22/2024 14:59 (34), 11/26/2024 07:35 (2)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.