Remote code execution in GhostScript
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-3781 |
| CWE-ID | CWE-94 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #1 is available. |
| Vulnerable software Subscribe |
Ghostscript Universal components / Libraries / Libraries used by multiple products |
| Vendor | Artifex Software, Inc. |
Security Bulletin
This security bulletin contains information about 1 vulnerabilities.
Updated: 12.09.2021
Assigned CVE-ID, improved list of affected versions.
1) Code Injection
EUVDB-ID: #VU56385
Risk: High
CVSSv3.1: 8.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2021-3781
CWE-ID:
CWE-94 - Improper Control of Generation of Code ('Code Injection')
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to improper input validation. A remote attacker can create a specially crafted SVG file, upload it to the affected system and execute arbitrary code.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall update from vendor's website.
Vulnerable software versionsGhostscript: 9.50 - 9.54.0
External linkshttp://github.com/duc-nt/RCE-0-day-for-GhostScript-9.50
http://bugs.ghostscript.com/show_bug.cgi?id=704342
http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=a9bd3dec9fde
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.
