Remote Code Execution in Apache Struts by Incorrect Freemarker Usage
CVE-2017-12611

9.8CRITICAL

Key Information:

Vendor
Apache
Status
Apache Struts
Vendor
CVE Published:
20 September 2017

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 94%

Summary

In Apache Struts versions ranging from 2.0.0 to 2.3.33 and from 2.5 to 2.5.10.1, the improper use of an expression in a Freemarker tag, instead of utilizing string literals, can create the potential for remote code execution. This type of vulnerability can be exploited by attackers to execute arbitrary code, compromising the integrity and confidentiality of the affected system.

Affected Version(s)

Apache Struts 2.0.0 - 2.3.33

Apache Struts 2.5 - 2.5.10.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

S2-053-CVE-2017-12611
Created by brianwrf

References

http://www.oracle.com/technetwork/security-advisory/alert...
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http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2017-...
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https://struts.apache.org/docs/s2-053.html
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EPSS Score

94% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability Reserved

.