SERVER-APACHE -- Snort has detected traffic exploiting vulnerabilities in Apache servers.
SERVER-APACHE Apache Struts remote code execution attempt
Apache Struts instances with Dynamic Method Invocation is enabled coukld allow remote attackers to execute arbitrary code via vectors related to an ! (exclamation mark) operator to the REST Plugin.
This rule looks for HTTP network traffic that attempts to exploit an Apache Struts vulnerability related to the ! (exclamation mark) operator.
No public information
No known false positives
Cisco Talos Intelligence Group
Tactic: Initial Access
Technique: Exploit Public-Facing Application
For reference, see the MITRE ATT&CK vulnerability types here: https://attack.mitre.org
Memory Corruption
Memory Corruption is any vulnerability that allows the modification of the content of memory locations in a way not intended by the developer. Memory corruption results are inconsistent; they could lead to fatal errors and system crashes or data leakage; some have no effect at all.
CVE-2016-3087Apache Struts 2.3.20.x before 2.3.20.3, 2.3.24.x before 2.3.24.3, and 2.3.28.x before 2.3.28.1, when Dynamic Method Invocation is enabled, allow remote attackers to execute arbitrary code via vectors related to an ! (exclamation mark) operator to the REST Plugin. |
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CVE-2017-12611In Apache Struts 2.0.1 through 2.3.33 and 2.5 through 2.5.10, using an unintentional expression in a Freemarker tag instead of string literals can lead to a RCE attack. |
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CVE-2018-11776Apache Struts versions 2.3 to 2.3.34 and 2.5 to 2.5.16 suffer from possible Remote Code Execution when alwaysSelectFullNamespace is true (either by user or a plugin like Convention Plugin) and then: results are used with no namespace and in same time, its upper package have no or wildcard namespace and similar to results, same possibility when using url tag which doesn't have value and action set and in same time, its upper package have no or wildcard namespace. |
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