SB2019021130 - Arch Linux update for rdesktop
Published: February 11, 2019 Updated: February 12, 2019
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 19 secuirty vulnerabilities.
1) Out-of-bounds read (CVE-ID: CVE-2018-20174)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary error in the function ui_clip_handle_data(). A remote attacker can send a specially crafted request to the affected application, trigger out-of-bounds read error and read contents of memory on the system.
2) Out-of-bounds read (CVE-ID: CVE-2018-20175)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
rdesktop versions up to and including v1.8.3 contains several Integer Signedness errors that lead to Out-Of-Bounds Reads in the file mcs.c and result in a Denial of Service (segfault).
3) Out-of-bounds read (CVE-ID: CVE-2018-20176)
The vulnerability allows a remote attacker to perform denial of service (DoS) attack.
The vulnerability exists due to a boundary condition when processing RDP packets in sec_parse_crypt_info() and sec_recv() functionsin secure.cfile. A remote attacker can trick the victim that is using the vulnerable RDP client to connect to malicious RDP server, trigger out-of-bounds read error and perform denial of service attack.
4) Integer overflow (CVE-ID: CVE-2018-20177)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow in function rdp_in_unistr(). A remote attacker can send a crafted request to the affected application, trigger memory corruption and possibly even a remote code execution.
5) Out-of-bounds read (CVE-ID: CVE-2018-20178)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
rdesktop versions up to and including v1.8.3 contain an Out-Of-Bounds Read in the function process_demand_active() that results in a Denial of Service (segfault).
6) Integer underflow (CVE-ID: CVE-2018-20179)
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
rdesktop versions up to and including v1.8.3 contain an Integer Underflow that leads to a Heap-Based Buffer Overflow in the function lspci_process() and results in memory corruption and probably even a remote code execution.
7) Integer underflow (CVE-ID: CVE-2018-20180)
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
rdesktop versions up to and including v1.8.3 contain an Integer Underflow that leads to a Heap-Based Buffer Overflow in the function rdpsnddbg_process() and results in memory corruption and probably even a remote code execution.
8) Integer overflow (CVE-ID: CVE-2018-20181)
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
rdesktop versions up to and including v1.8.3 contain an Integer Underflow that leads to a Heap-Based Buffer Overflow in the function seamless_process() and results in memory corruption and probably even a remote code execution.
9) Buffer overflow (CVE-ID: CVE-2018-20182)
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
rdesktop versions up to and including v1.8.3 contain a Buffer Overflow over the global variables in the function seamless_process_line() that results in memory corruption and probably even a remote code execution.
10) 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.
11) 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.
12) 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.
13) 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.
14) 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.
15) 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.
16) 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.
17) 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.
18) 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.
19) 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.
Remediation
Install update from vendor's website.