Multiple vulnerabilities in FreeRDP
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 6 |
| CVE-ID | CVE-2018-8789 CVE-2018-8788 CVE-2018-8785 CVE-2018-8784 CVE-2018-8786 CVE-2018-8787 |
| CWE-ID | CWE-125 CWE-787 CWE-122 CWE-190 |
| Exploitation vector | Network |
| Public exploit |
Public exploit code for vulnerability #1 is available. Public exploit code for vulnerability #2 is available. Public exploit code for vulnerability #3 is available. Public exploit code for vulnerability #4 is available. Public exploit code for vulnerability #5 is available. Public exploit code for vulnerability #6 is available. |
| Vulnerable software Subscribe |
FreeRDP Universal components / Libraries / Libraries used by multiple products |
| Vendor | FreeRDP |
Security Bulletin
This security bulletin contains information about 6 vulnerabilities.
1) Out-of-bounds read
EUVDB-ID: #VU16588
Risk: Low
CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2018-8789
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to cause DoS condition.
The vulnerability exists due to several out-of-bound read conditions that exist in the NTLM authentication module. A remote attacker can send a specially crafted request that submits malicious input, trigger several out-of-bounds read conditions that the attacker can use to cause a DoS condition.
MitigationUpdate to version 2.0.0-rc4.
Vulnerable software versionsFreeRDP: 2.0.0 rc0 - 2.0.0 rc3
External linkshttp://github.com/FreeRDP/FreeRDP/commit/2ee663f39dc8dac3d9988e847db19b2d7e3ac8c6
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
2) Out-of-bounds write
EUVDB-ID: #VU16589
Risk: High
CVSSv3.1: 8.9 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2018-8788
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: Yes
DescriptionThe vulnerability allows a remote authenticated attacker to cause DoS condition or execute arbitrary code.
The vulnerability exists due to out-of-bounds write condition in the nsc_rle_decode() function, as defined in the nsc.c source code file. A remote attacker can send a specially crafted request that submits malicious input, trigger a heap-based buffer overflow condition that the attacker can use to cause a DoS condition or execute arbitrary code with elevated privileges.
Successful exploitation of the vulnerability may result in system compromise.
MitigationUpdate to version 2.0.0-rc4.
Vulnerable software versionsFreeRDP: 2.0.0 rc0 - 2.0.0 rc3
External linkshttp://github.com/FreeRDP/FreeRDP/commit/d1112c279bd1a327e8e4d0b5f371458bf2579659
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
3) Heap-based buffer overflow
EUVDB-ID: #VU16590
Risk: High
CVSSv3.1: 8.9 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2018-8785
CWE-ID:
CWE-122 - Heap-based Buffer Overflow
Exploit availability: Yes
DescriptionThe vulnerability allows a remote authenticated attacker to cause DoS condition or execute arbitrary code.
The vulnerability exists due to improper handling of certain stream encodings by the zgfx_decompress() function. A remote attacker can send a specially crafted request that submits malicious input, trigger a heap-based buffer overflow condition that the attacker can use to cause a DoS condition or execute arbitrary code with elevated privileges.
Successful exploitation of the vulnerability may result in system compromise.
MitigationUpdate to version 2.0.0-rc4.
Vulnerable software versionsFreeRDP: 2.0.0 rc0 - 2.0.0 rc3
External linkshttp://github.com/FreeRDP/FreeRDP/commit/602f4a2e14b41703b5f431de3154cd46a5750a2d
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
4) Heap-based buffer overflow
EUVDB-ID: #VU16591
Risk: High
CVSSv3.1: 8.9 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2018-8784
CWE-ID:
CWE-122 - Heap-based Buffer Overflow
Exploit availability: Yes
DescriptionThe vulnerability allows a remote authenticated attacker to cause DoS condition or execute arbitrary code.
The vulnerability exists due to improper handling of certain stream encodings by the zgfx_decompress_segment() function, as defined in the zgfx.c source code file. A remote attacker can send a specially crafted request that submits malicious input, trigger a heap-based buffer overflow condition that the attacker can use to cause a DoS condition or execute arbitrary code with elevated privileges.
Successful exploitation of the vulnerability may result in system compromise.
MitigationUpdate to version 2.0.0-rc4.
Vulnerable software versionsFreeRDP: 2.0.0 rc0 - 2.0.0 rc3
External linkshttp://github.com/FreeRDP/FreeRDP/commit/17c363a5162fd4dc77b1df54e48d7bd9bf6b3be7
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
5) Heap-based buffer overflow
EUVDB-ID: #VU16592
Risk: High
CVSSv3.1: 8.9 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2018-8786
CWE-ID:
CWE-122 - Heap-based Buffer Overflow
Exploit availability: Yes
DescriptionThe vulnerability allows a remote authenticated attacker to cause DoS condition or execute arbitrary code.
The vulnerability exists due to improper handling of bitmaps by the update_read_bitmap_update() function, as defined in the update.c source code file. A remote attacker can send a specially crafted request that submits malicious input, trigger a heap-based buffer overflow condition that the attacker can use to cause a DoS condition or execute arbitrary code with elevated privileges.
Successful exploitation of the vulnerability may result in system compromise.
MitigationUpdate to version 2.0.0-rc4.
Vulnerable software versionsFreeRDP: 2.0.0 rc0 - 2.0.0 rc3
External linkshttp://github.com/FreeRDP/FreeRDP/commit/17c363a5162fd4dc77b1df54e48d7bd9bf6b3be7
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
6) Integer overflow
EUVDB-ID: #VU16593
Risk: High
CVSSv3.1: 8.9 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2018-8787
CWE-ID:
CWE-190 - Integer overflow
Exploit availability: Yes
DescriptionThe vulnerability allows a remote authenticated attacker to cause DoS condition or execute arbitrary code.
The vulnerability exists due to integer overflow condition that exists in the gdi_Bitmap_Decompress() function, as defined in the graphics.c source code file. A remote attacker can send a specially crafted request that submits malicious input, trigger a heap-based buffer overflow condition that the attacker can use to cause a DoS condition or execute arbitrary code with elevated privileges.
Successful exploitation of the vulnerability may result in system compromise.
MitigationUpdate to version 2.0.0-rc4.
Vulnerable software versionsFreeRDP: 2.0.0 rc0 - 2.0.0 rc3
External linkshttp://github.com/FreeRDP/FreeRDP/commit/09b9d4f1994a674c4ec85b4947aa656eda1aed8a
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
