FreeRDP up to 2.0.0-rc4 libfreerdp/gdi/region.c integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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8.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in FreeRDP up to 2.0.0-rc4. This impacts an unknown function of the file libfreerdp/gdi/region.c. Such manipulation leads to integer overflow. This vulnerability is listed as CVE-2020-11523. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in FreeRDP up to 2.0.0-rc4 and classified as critical. Affected by this issue is some unknown functionality of the file libfreerdp/gdi/region.c. The manipulation with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. Impacted is confidentiality, integrity, and availability. CVE summarizes:

libfreerdp/gdi/region.c in FreeRDP versions > 1.0 through 2.0.0-rc4 has an Integer Overflow.

The weakness was presented 05/15/2020 (GitHub Repository). The advisory is available at github.com. This vulnerability is handled as CVE-2020-11523 since 04/04/2020. 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 vulnerability scanner Nessus provides a plugin with the ID 304150 (Oracle Linux 7 : freerdp (ELSA-2026-4471)), which helps to determine the existence of the flaw in a target environment.

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

The vulnerability is also documented in the vulnerability database at Tenable (304150). See VDB-155321, VDB-155320, VDB-155319 and VDB-155317 for similar entries. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.3

VulDB Base Score: 7.3
VulDB Temp Score: 6.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
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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Nessus ID: 304150
Nessus Name: Oracle Linux 7 : freerdp (ELSA-2026-4471)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/04/2020 🔍
05/15/2020 +41 days 🔍
05/16/2020 +1 days 🔍
03/28/2026 +2142 days 🔍

Sourcesinfo

Product: github.com

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

CVE: CVE-2020-11523 (🔍)
GCVE (CVE): GCVE-0-2020-11523
GCVE (VulDB): GCVE-100-155318
See also: 🔍

Entryinfo

Created: 05/16/2020 09:38
Updated: 03/28/2026 14:35
Changes: 05/16/2020 09:38 (37), 05/16/2020 09:43 (17), 10/18/2020 13:04 (1), 03/28/2026 14:35 (19)
Complete: 🔍
Cache ID: 216:29B:103

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