VDB-150722 · CVE-2020-9432 · GCVE-0-2020-9432

lua-openssl 0.7.7-1 X.509 Certificate Validation openssl_x509_check_host Return Value certificate validation

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.
9.1	$5k-$25k	0.00

Summaryinfo

A vulnerability described as problematic has been identified in lua-openssl 0.7.7-1. Affected by this vulnerability is the function openssl_x509_check_host of the component X.509 Certificate Validation. Such manipulation as part of Return Value leads to certificate validation. This vulnerability is uniquely identified as CVE-2020-9432. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in lua-openssl 0.7.7-1 (Network Encryption Software). It has been rated as critical. Affected by this issue is the function openssl_x509_check_host of the component X.509 Certificate Validation. The manipulation as part of a Return Value leads to a certificate validation vulnerability. Using CWE to declare the problem leads to CWE-295. The product does not validate, or incorrectly validates, a certificate. Impacted is confidentiality, and integrity. CVE summarizes:

openssl_x509_check_host in lua-openssl 0.7.7-1 mishandles X.509 certificate validation because it uses lua_pushboolean for certain non-boolean return values.

The weakness was disclosed 02/27/2020. This vulnerability is handled as CVE-2020-9432 since 02/27/2020. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 02/28/2020). This vulnerability is assigned to T1587.003 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entries VDB-150724 and VDB-150723 are pretty similar. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Network Encryption Software

Name

lua-openssl

Version

0.7.7-1

License

open-source

Support

end of life (old version)

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.1
VulDB Meta Temp Score: 9.1

VulDB Base Score: 9.1
VulDB Temp Score: 9.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.1
NVD Vector: 🔍

CVSSv2info

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

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Certificate validation
CWE: CWE-295 / CWE-287
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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

02/27/2020 🔍
02/27/2020 +0 days 🔍
02/28/2020 +1 days 🔍
04/07/2024 +1500 days 🔍

Sourcesinfo

Advisory: a6dc186dd4b6b9e329a93cca3e7e3cfccfdf3cca
Status: Not defined

CVE: CVE-2020-9432 (🔍)
GCVE (CVE): GCVE-0-2020-9432
GCVE (VulDB): GCVE-100-150722
See also: 🔍

Entryinfo

Created: 02/28/2020 15:40
Updated: 04/07/2024 13:39
Changes: 02/28/2020 15:40 (38), 02/28/2020 15:45 (18), 04/07/2024 13:39 (19)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.