FreeRDP up to 2.1.1 Compatibility Mode /relax-order-checks gdi_SelectObject use after free

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in FreeRDP up to 2.1.1. This affects the function gdi_SelectObject of the file /relax-order-checks of the component Compatibility Mode. Such manipulation leads to use after free. This vulnerability is listed as CVE-2020-4031. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in FreeRDP up to 2.1.1. It has been rated as critical. Affected by this issue is the function gdi_SelectObject of the file /relax-order-checks of the component Compatibility Mode. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In FreeRDP before version 2.1.2, there is a use-after-free in gdi_SelectObject. All FreeRDP clients using compatibility mode with /relax-order-checks are affected. This is fixed in version 2.1.2.

The weakness was presented 06/22/2020 (GitHub Repository). The advisory is shared for download at github.com. This vulnerability is handled as CVE-2020-4031 since 12/30/2019. The attack may be launched remotely. The requirement for exploitation is a simple authentication. There are known technical details, but no exploit is available.

Upgrading to version 2.1.2 eliminates this vulnerability.

See VDB-157150, VDB-157149 and VDB-157147 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.0

VulDB Base Score: 7.4
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 3.5
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
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: FreeRDP 2.1.2

Timelineinfo

12/30/2019 🔍
06/22/2020 +175 days 🔍
06/23/2020 +1 days 🔍
10/26/2020 +125 days 🔍

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2020-4031 (🔍)
GCVE (CVE): GCVE-0-2020-4031
GCVE (VulDB): GCVE-100-157148
See also: 🔍

Entryinfo

Created: 06/23/2020 11:10
Updated: 10/26/2020 15:55
Changes: 06/23/2020 11:10 (41), 06/23/2020 11:15 (11), 10/26/2020 15:49 (1), 10/26/2020 15:55 (1)
Complete: 🔍
Cache ID: 216::103

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