Use-after-free in freerdp (Alpine package)
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-4031 |
| CWE-ID | CWE-416 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
freerdp (Alpine package) Operating systems & Components / Operating system package or component |
| Vendor | Alpine Linux Development Team |
Security Bulletin
This security bulletin contains one high risk vulnerability.
1) Use-after-free
EUVDB-ID: #VU29360
Risk: High
CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-4031
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in "gdi_SelectObject" when using compatibility mode with /relax-order-checks. A remote attacker can execute arbitrary code on the target system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
MitigationInstall update from vendor's website.
Vulnerable software versionsfreerdp (Alpine package): 1.1.0-r0 - 2.1.1-r0
External linkshttp://git.alpinelinux.org/aports/commit/?id=1bb47e3a21445c5f2faa983e5a2f9ac0d4861ca9
http://git.alpinelinux.org/aports/commit/?id=723c4c1dd116dd6a5bc4337744353b36da6dc4de
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.
