SB2019010203 - Multiple vulnerabilities in rdesktop
Published: January 2, 2019
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 10 secuirty vulnerabilities.
1) Heap-based buffer overflow (CVE-ID: CVE-2018-8797)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a heap-based buffer overflow condition in the process_plane() function. A remote attacker can trick the victim who is using a Remote Desktop Protocol (RDP) client on a targeted system into connecting to an attacker-controlled RDP server, trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
2) Out-of-bounds read (CVE-ID: CVE-2018-8796)
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to an out-of-bounds read condition in the process_bitmap_updates() function. A remote attacker can trick the victim who is using a Remote Desktop Protocol (RDP) client on a targeted system into connecting to an attacker-controlled RDP server, trigger segmentation fault (segfault) and cause the service to crash.
3) Heap-based buffer overflow (CVE-ID: CVE-2018-8795)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to an integer overflow. A remote attacker can trick the victim who is using a Remote Desktop Protocol (RDP) client on a targeted system into connecting to an attacker-controlled RDP server, trigger out-of-bounds write condition in the process_bitmap_updates() function and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
4) Out-of-bounds read (CVE-ID: CVE-2018-8798)
The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.
The vulnerability exists due to an out-of-bounds read condition in the rdpsnd_process_ping()function. A remote attacker can trick the victim who is using a Remote Desktop Protocol (RDP) client on a targeted system into connecting to an attacker-controlled RDP server, trigger segmentation fault (segfault) and access sensitive information on the targeted system.
5) Out-of-bounds read (CVE-ID: CVE-2018-8799)
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to an out-of-bounds read condition in the process_secondary_order() function. A remote attacker can trick the victim who is using a Remote Desktop Protocol (RDP) client on a targeted system into connecting to an attacker-controlled RDP server, trigger segmentation fault (segfault) and cause the service to crash.
6) Out-of-bounds read (CVE-ID: CVE-2018-8792)
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to an out-of-bounds read condition in the cssp_read_tsrequest() function. A remote attacker can trick the victim who is using a Remote Desktop Protocol (RDP) client on a targeted system into connecting to an attacker-controlled RDP server, trigger segmentation fault (segfault) and cause the service to crash.
7) Out-of-bounds read (CVE-ID: CVE-2018-8791)
The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.
The vulnerability exists due to an out-of-bounds read condition in the rdpdr_process() function. A remote attacker can trick the victim who is using a Remote Desktop Protocol (RDP) client on a targeted system into connecting to an attacker-controlled RDP server, trigger segmentation fault (segfault) and access sensitive information on the targeted system.
8) Heap-based buffer overflow (CVE-ID: CVE-2018-8793)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a heap-based buffer overflow condition in the cssp_read_tsrequest() function. A remote attacker can trick the victim who is using a Remote Desktop Protocol (RDP) client on a targeted system into connecting to an attacker-controlled RDP server, trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
9) Heap-based buffer overflow (CVE-ID: CVE-2018-8800)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a heap-based buffer overflow condition in the ui_clip_handle_data() function. A remote attacker can trick the victim who is using a Remote Desktop Protocol (RDP) client on a targeted system into connecting to an attacker-controlled RDP server, trigger memory corruption 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-2018-8794)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow condition in the process_bitmap_updates() function. A remote attacker can trick the victim who is using a Remote Desktop Protocol (RDP) client on a targeted system into connecting to an attacker-controlled RDP server, trigger out-of-bounds write and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.