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CVE-2021-31805

Forced OGNL evaluation, when evaluated on raw not validated user input in tag attributes, may lead to RCE.

Published: Apr 12, 2022Updated: Nov 21, 2024 Sources: CVE List NVD GHSA BDUCWE-917
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
85.1%
Top 0.3%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available
Am I actually vulnerable?1 Nuclei template available — see how to check your systems. How to verify

Description

The fix issued for CVE-2020-17530 was incomplete. So from Apache Struts 2.0.0 to 2.5.29, still some of the tag’s attributes could perform a double evaluation if a developer applied forced OGNL evaluation by using the %{...} syntax. Using forced OGNL evaluation on untrusted user input can lead to a Remote Code Execution and security degradation.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-917

Affected Products

strutsapache
On-premLibrary
Web & CMS Plugins
Apache StrutsApache Software Foundation
On-premWeb App
Web & CMS Plugins
StrutsApache Software Foundation
LibraryLibrary
OSS Libraries / web-framework
org.apache.struts:struts2-coreMavenOSS Libraries
apacheoss-projectUSWeb & CMS Pluginsaka apache http server, apache httpd
apache software foundationoss-projectUSWeb & CMS Pluginsaka apache foundation
mavenpackage-ecosystemOSS Libraries

Attack Graph

Products CVE Techniques Tactics

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Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
Workaround Available

MITRE ATT&CK

2 techniques
Execution
Initial Access
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References

http://www.openwall.com/lists/oss-security/2022/04/12/6
openwall.com
https://cwiki.apache.org/confluence/display/WW/S2-062
cwiki.apache.org
https://security.netapp.com/advisory/ntap-20220420-0001/
security.netapp.com
and 7 more references View all →

Timeline

Published
Apr 12, 2022
Last Updated
Nov 21, 2024

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