VDB-168025 · CVE-2020-35733 · GCVE-0-2020-35733

Erlang OTP up to 23.2.1 X.509 Certificate 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.
6.6	$0-$5k	0.00

Summaryinfo

A vulnerability marked as critical has been reported in Erlang OTP up to 23.2.1. Affected by this vulnerability is an unknown functionality of the component X.509 Certificate Handler. This manipulation causes certificate validation. This vulnerability is registered as CVE-2020-35733. The attack requires access to the local network. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Erlang OTP up to 23.2.1 and classified as critical. Affected by this vulnerability is an unknown code of the component X.509 Certificate Handler. The manipulation with an unknown input leads to a certificate validation vulnerability. The CWE definition for the vulnerability is CWE-295. The product does not validate, or incorrectly validates, a certificate. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was published 01/16/2021. The advisory is shared at erlang.org. This vulnerability is known as CVE-2020-35733. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1587.003 for this issue.

Upgrading to version 23.2.2 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Erlang

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.7

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: OTP 23.2.2

Timelineinfo

12/27/2020 🔍
01/16/2021 +20 days 🔍
01/16/2021 +0 days 🔍
02/14/2021 +29 days 🔍

Sourcesinfo

Advisory: erlang.org
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2020-35733 (🔍)
GCVE (CVE): GCVE-0-2020-35733
GCVE (VulDB): GCVE-100-168025

Entryinfo

Created: 01/16/2021 08:19
Updated: 02/14/2021 21:38
Changes: 01/16/2021 08:19 (38), 02/14/2021 21:34 (6), 02/14/2021 21:38 (18)
Complete: 🔍
Cache ID: 216::103