OpenEXR up to 2.4.0 ImfXdr.h Classifier off-by-one

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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.
4.2	$0-$5k	0.00

A vulnerability, which was classified as problematic, was found in OpenEXR up to 2.4.0. This affects the function DwaCompressor::Classifier::Classifier of the file ImfXdr.h. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-193. This is going to have an impact on confidentiality. The summary by CVE is:

An issue was discovered in OpenEXR before 2.4.1. There is an off-by-one error in use of the ImfXdr.h read function by DwaCompressor::Classifier::Classifier, leading to an out-of-bounds read.

The weakness was shared 04/14/2020. This vulnerability is uniquely identified as CVE-2020-11765 since 04/14/2020. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

Upgrading to version 2.4.1 eliminates this vulnerability.

The entries 153128, 153127, 153126 and 153125 are related to this item.

Productinfoedit

Name

OpenEXR

CPE 2.3infoedit

CPE 2.2infoedit

CVSSv3infoedit

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.2

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2infoedit

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

NVD Base Score: 🔒

Exploitinginfoedit

Class: Memory corruption
CWE: CWE-193
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	unlock	unlock	unlock	unlock
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Threat Intelligenceinfoedit

Threat: 🔍
Adversaries: 🔍
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Remediation: 🔍

Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: OpenEXR 2.4.1

Timelineinfoedit

04/14/2020 Advisory disclosed
04/14/2020 +0 days CVE assigned
04/15/2020 +1 days VulDB entry created
10/09/2020 +177 days VulDB last update

Sourcesinfoedit

Status: Not defined
Confirmation: 🔒

CVE: CVE-2020-11765 (🔒)
See also: 🔒

Entryinfoedit

Created: 04/15/2020 08:17 AM
Updated: 10/09/2020 04:40 PM
Changes: (1) advisory_confirm_url
Complete: 🔍