Summaryinfo

A vulnerability was found in FreeRDP up to 2.0.0-rc4. It has been classified as problematic. Affected by this issue is some unknown functionality of the file libfreerdp/core/update.c. The manipulation leads to integer overflow. This vulnerability is documented as CVE-2020-11526. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in FreeRDP up to 2.0.0-rc4. It has been rated as problematic. This issue affects an unknown code block of the file libfreerdp/core/update.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. The summary by CVE is:

libfreerdp/core/update.c in FreeRDP versions > 1.1 through 2.0.0-rc4 has an Out-of-bounds Read.

The weakness was released 05/15/2020 (GitHub Repository). The advisory is shared at github.com. The identification of this vulnerability is CVE-2020-11526 since 04/04/2020. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 236628 (Alibaba Cloud Linux 3 : 0002: freerdp (ALINUX3-SA-2022:0002)), 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 (236628). Entries connected to this vulnerability are available at VDB-155320, VDB-155319, VDB-155318 and VDB-155317. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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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