Critical severity · published Apr 12, 2022
CVE-2021-31805
The fix issued for CVE-2020-17530 was incomplete
9.8
CVSS
85.4%
EPSS
No
On KEV
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
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)85.4% · higher than 100% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ST
Struts · Apache
2.0.0 through 2.5.29 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-31805
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-31805
Mailing List
http://www.openwall.com/lists/oss-security/2022/04/12/6
Mitigation
https://cwiki.apache.org/confluence/display/WW/S2-062
Third Party Advisory
https://security.netapp.com/advisory/ntap-20220420-0001/
www.oracle.com
https://www.oracle.com/security-alerts/cpujul2022.html
More from Struts
9.8
CVE-2020-17530
Apache Struts Remote Code Execution Vulnerability
9.8
CVE-2017-9791
The Struts 1 plugin in Apache Struts 2.1.x and 2.3.x might allow remote code execution via a malicious field value passed in a raw message to the ActionMessage
9.8
CVE-2017-5638
The Jakarta Multipart parser in Apache Struts 2 2.3.x before 2.3.32 and 2.5.x before 2.5.10.1 has incorrect exception handling and error-message generation during file-upload…
9.8
CVE-2013-2251
Apache Struts 2.0.0 through 2.3.15 allows remote attackers to execute arbitrary OGNL expressions via a parameter with a crafted (1) action:, (2) redirect:, or (3) redirectAction:…
9.8
CVE-2012-0391
The ExceptionDelegator component in Apache Struts before 2.2.3.1 interprets parameter values as OGNL expressions during certain exception handling for mismatched data types of…