SB2020060209 - Multiple vulnerabilities in FreeRDP

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Main Vulnerability Database SB2020060209

SB2020060209 - Multiple vulnerabilities in FreeRDP

Published: June 2, 2020 Updated: June 2, 2020

Security Bulletin ID SB2020060209
Severity
High
Patch available
YES
Number of vulnerabilities 13
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 23% Medium 46% Low 31%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 13 secuirty vulnerabilities.


1) Out-of-bounds read (CVE-ID: CVE-2020-11087)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in the "ntlm_read_AuthenticateMessage" function. A remote authenticated attacker can trigger out-of-bounds read error and read contents of memory on the system.


2) Out-of-bounds read (CVE-ID: CVE-2020-11088)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in the "ntlm_read_NegotiateMessage" function. A remote attacker can trigger out-of-bounds read error and read contents of memory on the system.


3) Out-of-bounds read (CVE-ID: CVE-2020-11089)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in the "parallel_process_irp_create", "serial_process_irp_create", "drive_process_irp_write", "printer_process_irp_write", "rdpei_recv_pdu" and "serial_process_irp_write" functions. A remote attacker can trigger out-of-bounds read error and read contents of memory on the system.


4) Out-of-bounds read (CVE-ID: CVE-2020-11086)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in the "ntlm_read_ntlm_v2_client_challenge" function. A remote authenticated attacker can trigger out-of-bounds read error and read contents of memory on the system.


5) Out-of-bounds read (CVE-ID: CVE-2020-11085)

The vulnerability allows a remote attacker to gain access to potentially sensitive information or perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in the "cliprdr_read_format_list" function. A remote authenticated attacker can trigger out-of-bounds read error and read contents of memory on the system or cause a deial of service condition.


6) Out-of-bounds read (CVE-ID: CVE-2020-11043)

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to a boundary condition in the "rfx_process_message_tileset" function. A remote attacker can trigger out-of-bounds read error, results in garbage on screen (as colors).


7) Improper Validation of Array Index (CVE-ID: CVE-2020-11041)

The vulnerability allows a remote user to perform a denal of service (DoS) attack.

The vulnerability exists due to unchecked read of array offset in "rdpsnd_recv_wave2_pdu". A remote administrator can crash the client instance followed by no or distorted sound or a session disconnect.


8) Out-of-bounds read (CVE-ID: CVE-2020-11040)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in the "clear_decompress_subcode_rlex" function, visualized on screen as color. A remote attacker can trigger out-of-bounds read error and read contents of memory on the system.


9) Integer overflow (CVE-ID: CVE-2020-11039)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow in USB redirection channel. A remote attacker can pass specially crafted data to the application, trigger integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


10) Integer overflow (CVE-ID: CVE-2020-11038)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow in VIDEO channel. A remote attacker can pass specially crafted data to the application, trigger integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


11) Out-of-bounds read (CVE-ID: CVE-2020-11019)

The vulnerability allows a remote attacker to gain access to potentially sensitive information or perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in "update_recv" function, when running with logger set to "WLOG_TRACE". A remote authenticated attacker can trigger out-of-bounds read error and read contents of memory on the system or cause a denial of service condition.


12) Out-of-bounds read (CVE-ID: CVE-2020-11018)

The vulnerability allows a remote attacker to gain access to potentially sensitive information or perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in the "cliprdr_server_receive_capabilities" function. A remote authenticated attacker can send a specially crafted request, trigger out-of-bounds read error and read contents of memory on the system or cause a denial of service condition.


13) Double Free (CVE-ID: CVE-2020-11017)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in "cliprdr_server_receive_capabilities" function. A remote attacker can pass specially crafted data to the application, trigger double free error and cause a denial of service condition on the target system.


Remediation

Install update from vendor's website.

References