Remote code execution in Apache Struts
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-17530 |
| CWE-ID | CWE-94 |
| Exploitation vector | Network |
| Public exploit | Vulnerability #1 is being exploited in the wild. |
| Vulnerable software Subscribe |
Apache Struts Server applications / Frameworks for developing and running applications |
| Vendor | Apache Foundation |
Security Bulletin
This security bulletin contains one high risk vulnerability.
1) Code Injection
EUVDB-ID: #VU48815
Risk: High
CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-17530
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 when processing certain tag's attributes. The application performs double evaluation of the code if a developer applied forced OGNL evaluation by using the %{...} syntax. A remote attacker can send a specially crafted request to the application and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsApache Struts: 2.0.0 - 2.5.25
External linkshttp://cwiki.apache.org/confluence/display/WW/S2-061
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.
