OpenSSL up to 3.0.7 X.509 Certificate Verification buffer overflow

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.
5.4$5k-$25k0.03

A vulnerability has been found in OpenSSL up to 3.0.7 (Network Encryption Software) and classified as critical. Affected by this vulnerability is an unknown code block of the component X.509 Certificate Verification. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The program copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was released 02/07/2023. It is possible to read the advisory at openssl.org. This vulnerability is known as CVE-2022-4203. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 02/07/2023).

Upgrading to version 3.0.8 eliminates this vulnerability.

Productinfo

Type

Name

License

  • open-source

CPE 2.3info

CPE 2.2info

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: OpenSSL 3.0.8
Patch: c927a3492698c254637da836762f9b1f86cffabc

Timelineinfo

11/29/2022 CVE reserved
02/07/2023 +70 days Advisory disclosed
02/07/2023 +0 days VulDB entry created
03/06/2023 +27 days VulDB last update

Sourcesinfo

Product: openssl.org

Advisory: openssl.org
Status: Confirmed

CVE: CVE-2022-4203 (🔒)

Entryinfo

Created: 02/07/2023 06:45 PM
Updated: 03/06/2023 09:20 AM
Changes: 02/07/2023 06:45 PM (38), 03/06/2023 09:20 AM (4)
Complete: 🔍

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