CVE-2021-31805

high-risk
Published 2022-04-12

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.

Do I need to act?

!
94.0% chance of exploitation in next 30 days
EPSS score — higher than 6% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Apache

References (8)

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/
https://www.oracle.com/security-alerts/cpujul2022.html
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/
https://www.oracle.com/security-alerts/cpujul2022.html
57
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 20/34 · Moderate
Exposure 5/34 · Minimal