ASA-2019-00068 – FreeRDP: Integer truncation that leads to a heap-based buffer overflow in function update_read_bitmap_update()

Posted on by Allele Security Intelligence in Alerts

Allele Security Alert

ASA-2019-00068

Identifier(s)

ASA-2019-00068, CVE-2018-8786

Title

Integer truncation that leads to a heap-based buffer overflow in function update_read_bitmap_update()

Vendor(s)

FreeRDP project

Product(s)

FreeRDP

Affected version(s)

FreeRDP prior to version 2.0.0-rc4

Fixed version(s)

FreeRDP 2.0.0-rc4

Proof of concept

Unknown

Description

FreeRDP prior to version 2.0.0-rc4 contains an integer truncation that leads to a heap-based buffer overflow in function update_read_bitmap_update() and results in a memory corruption and probably even a remote code execution.

Technical details

Unknown

Credits

Eyal Itkin (Checkpoint Research)

Reference(s)

2.0.0-rc4 released
http://www.freerdp.com/2018/11/20/2_0_0_rc4-released

Reverse RDP Attack: Code Execution on RDP Clients
https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/

CVE-2018-8786
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-8786

CVE-2018-8786
https://nvd.nist.gov/vuln/detail/CVE-2018-8786

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Last modified: February 11, 2019

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