Summaryinfo

A vulnerability classified as critical was found in FreeRDP up to 2.0.0-rc4. The impacted element is an unknown function of the file libfreerdp/codec/planar.c. The manipulation results in integer overflow. This vulnerability is identified as CVE-2020-11521. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as critical, was found in FreeRDP up to 2.0.0-rc4. Affected is an unknown function of the file libfreerdp/codec/planar.c. The manipulation with an unknown input leads to a integer overflow vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

libfreerdp/codec/planar.c in FreeRDP version > 1.0 through 2.0.0-rc4 has an Out-of-bounds Write.

The weakness was released 05/15/2020 (GitHub Repository). The advisory is shared for download at github.com. This vulnerability is traded as CVE-2020-11521 since 04/04/2020. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

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). Entries connected to this vulnerability are available at VDB-155320, VDB-155319, VDB-155318 and VDB-155317. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Remote Access Software

Name

• FreeRDP

Version

• 2.0.0-rc1
• 2.0.0-rc2
• 2.0.0-rc3
• 2.0.0-rc4

License

• open-source

Website

• Product: https://github.com/FreeRDP/FreeRDP/

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