CVE-2018-11776

Apache Struts Remote Code Execution

8.1 HIGHActively exploited (CISA KEV)Public exploitEPSS 100.0%

Published22 Aug 2018
Added to CISA KEV3 Nov 2021
Remediation due3 May 2022

Apache Struts contains a vulnerability that allows for remote code execution under two circumstances. One, where the alwaysSelectFullNamespace option is true and the value isn't set for a result defined in underlying configurations and in same time, its upper package configuration have no or wildcard namespace. Or, using URL tag which doesn't have value and action set and in same time, its upper package configuration have no or wildcard namespace.

Added to KEV: 3 Nov 2021Federal remediation due: 3 May 2022

Description

Apache 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.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityHigh

Privileges requiredNone

User interactionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Apache Struts≥ 2.0.4 < 2.3.35 · ≥ 2.5.0 < 2.5.17

Netapp Active Iq Unified Manager≥ 9.5 · ≥ 7.3

Netapp Oncommand Insightall versions

Netapp Oncommand Workflow Automationall versions

Netapp Snapcenterall versions

Oracle Communications Policy Management< 12.5.0

Oracle Enterprise Manager Base Platform13.3.0.0 · 13.4.0.0

Oracle Mysql Enterprise Monitor≥ 4.0.0 ≤ 4.0.6.5281 · ≥ 8.0.0 ≤ 8.0.2.8191 · ≤ 3.4.9.4237

Remediation

Fixed in

Apache Struts≥ 2.3.35

Oracle Communications Policy Management≥ 12.5.0

Patch & vendor advisories

References

http://packetstormsecurity.com/files/172830/Apache-Struts-Remote-Code-Execution.htmlThird Party AdvisoryVDB Entry
https://cwiki.apache.org/confluence/display/WW/S2-057Issue TrackingThird Party Advisory
https://github.com/hook-s3c/CVE-2018-11776-Python-PoCExploitThird Party Advisory
https://lgtm.com/blog/apache_struts_CVE-2018-11776ExploitThird Party Advisory
https://lists.apache.org/thread.html/r6d03e45b81eab03580cf7f8bb51cb3e9a1b10a2cc0c6a2d3cc92ed0c%40%3Cannounce.apache.org%3EMailing List
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0012Third Party Advisory
https://security.netapp.com/advisory/ntap-20180822-0001/Third Party Advisory
https://security.netapp.com/advisory/ntap-20181018-0002/Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-11776US Government Resource
https://www.exploit-db.com/exploits/45260/ExploitThird Party AdvisoryVDB Entry

and 10 more references

Frequently asked

Is CVE-2018-11776 being actively exploited?

Yes. CVE-2018-11776 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 3 Nov 2021.

How severe is CVE-2018-11776?

CVE-2018-11776 has a CVSS 3.1 base score of 8.1, rated high. EPSS estimates a 100.0% probability of exploitation.

Which products are affected by CVE-2018-11776?

Affected products include Apache Struts, Netapp Active Iq Unified Manager, Netapp Oncommand Insight, Netapp Oncommand Workflow Automation, Netapp Snapcenter, and 3 more.

How do I fix CVE-2018-11776?

Upgrade affected software to a fixed version, for example Apache Struts 2.3.35, Oracle Communications Policy Management 12.5.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2018-11776 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.